JP6614251B2 - Color filter with pattern retarder and liquid crystal display device - Google Patents

Description

  The present invention relates to a liquid crystal display device capable of three-dimensional display, a color filter with a pattern retarder used therefor, and a monochrome display substrate with a pattern retarder.

  Conventionally, as a flat panel display, a two-dimensional display has been mainstream, but in recent years, a flat panel display capable of three-dimensional display has begun to attract attention, and some of them are commercially available. . Further, in future flat panel displays, it is a natural tendency to be capable of three-dimensional display, and flat panel displays capable of three-dimensional display are being studied in a wide range of fields.

  In order to perform three-dimensional display on a flat panel display, it is usually necessary to display a right-eye video and a left-eye video separately for the viewer in some way. As a method of separately displaying the right-eye video and the left-eye video, for example, the right-eye video and the left-eye video are alternately switched and displayed at a constant cycle on the entire panel, and the viewer is allowed to display them. Synchronize the glasses that have been put on and the image switching cycle, and at the timing when the image for the right eye is displayed, the eyeglass lens on the left eye side is shielded so that the image for the right eye reaches only the right eye, and the left eye There is known a system in which the left eye image reaches only the left eye by shielding the right eyeglass lens at the timing when the image for the eye is displayed (glasses shutter method). It is known that such a method has an advantage that the resolution is not lowered because the image for the right eye and the image for the left eye are displayed on the entire surface of the panel. However, in such a method, it is necessary to switch between the right-eye video and the left-eye video at a high speed cycle, so that there is a problem that it is difficult to adopt only with a flat panel display that adopts a display method with a fast response speed. It was. For example, since a plasma display has a high display response speed, it is possible to adopt such a glasses shutter system. However, in a liquid crystal display device having a slow display response speed compared to a plasma display, a glass shutter system is used. However, there is a problem in that the brightness of the image often decreases extremely.

  On the other hand, a passive method is known as a method for separately displaying a right-eye image and a left-eye image in a liquid crystal display device (Patent Document 1). Such a passive three-dimensional display method will be described with reference to the drawings. FIG. 20 is a schematic diagram illustrating an example of a passive three-dimensional display. As shown in FIG. 20, in this method, first, the video display area of the liquid crystal display device is divided into a plurality of types of video display areas of a right-eye video display area and a left-eye video display area in a pattern, The right eye video is displayed in the video display area of one group, and the left eye video is displayed in the video display area of the other group. Also, using a linear polarizing plate and a patterned retardation film (pattern retarder film) on which a patterned retardation layer corresponding to the division pattern of the image display area is formed, an image for the right eye and an image for the left eye Are converted into circularly polarized light that are orthogonal to each other. In addition, the viewer wears circular polarizing glasses that employ circular polarizing lenses that are orthogonal to each other for the right-eye lens and the left-eye lens, so that the right-eye image passes only through the right-eye lens and the left-eye image is displayed. Pass only through the lens for the left eye. In this way, the passive system enables three-dimensional display by allowing the right-eye video to reach only the right eye and the left-eye video to reach only the left eye.

  Such a passive method can be easily adopted for a liquid crystal display device whose response speed is not high, and a conventional liquid crystal display device can be easily used by using the patterned retarder film and corresponding circular polarizing glasses. There is an advantage that three-dimensional display is possible. For this reason, a passive liquid crystal display device has attracted a great deal of attention as a center for future three-dimensional display devices.

By the way, in the above-described passive liquid crystal display device, the above-described pattern retarder film is disposed by being bonded onto the surface on the viewer side of the liquid crystal cell of the liquid crystal display device. At this time, since the retardation layer of the pattern retarder film is formed in a pattern corresponding to the image display area of the liquid crystal display device as described above, the retardation layer and the image display area are more specifically described. Needs to be bonded together with high accuracy in the position of the color filter pixel portion in the video display area.
However, when the current bonding method is used, the alignment accuracy between the retardation layer of the pattern retarder film disposed outside the liquid crystal cell and the pixel portion of the color filter formed inside the liquid crystal cell Are limited, and it may be difficult to achieve the desired accuracy. As a result, the right-eye image and the left-eye image cannot be satisfactorily converted into circularly polarized light in the liquid crystal display device due to the positional shift between the two, and the quality of the three-dimensional display deteriorates or the three-dimensional display itself There is a problem that it becomes impossible to do.

  In recent years, liquid crystal display devices have been demanded to have higher definition, so that the phase difference layer of the pattern retarder and the pixel portion of the color filter have also become smaller in size with the increase in definition. It is desired to be formed. For this reason, the above-described misalignment at the time of bonding is a more serious problem because it greatly affects the three-dimensional display of the liquid crystal display device.

JP 2012-18421 A

  In the light of such circumstances, the present inventors have conducted intensive research, and conventionally used a color filter disposed and used inside a liquid crystal display device on the side opposite to the liquid crystal cell side of the polarizing plate of the liquid crystal display device. The present inventors have found a new structure of a liquid crystal display device (hereinafter, sometimes referred to as the outside of a polarizing plate). Furthermore, the inventors of the present invention have the structure of the liquid crystal display device as described above to form the color filter pixel portion or the light shielding portion and the pattern retarder retardation layer on the surface of the same substrate. The present inventors have found that a color filter and a monochrome display substrate having a new structure can be used, and have completed the present invention.

  The present invention provides a liquid crystal display device capable of satisfactorily performing three-dimensional display by suppressing the occurrence of positional deviation of the retardation layer and the opening of the pixel portion or the light-shielding portion, and a patterned pattern used therefor. The main object is to provide a color filter with a retarder and a monochrome display substrate with a pattern retarder.

  The present invention provides a substrate, a pixel portion formed in a pattern on one surface of the substrate, and including a red subpixel, a green subpixel, and a blue subpixel, and on one surface of the substrate And a patterned retarder having a retardation layer containing a compound having a refractive anisotropy formed on the surface of the alignment layer, wherein the retardation layer comprises a first retardation region and An in-plane retardation value of the retardation layer formed in the first retardation region having a second retardation region, and an in-plane retardation of the retardation layer formed in the second retardation region The difference from the value is equivalent to λ / 2, and the first phase difference region and the second phase difference region are each in a pattern shape that follows the pattern of the pixel portion for n (n is a natural number). Pattern retarder characterized by being provided To provide a biasing color filter.

  According to the present invention, since it is possible to form the pixel portion and the pattern retarder on the surface of the same base material, the first retardation region and the second position of the pattern of the pixel portion and the retardation layer are provided. The pattern of the phase difference region can be formed with good positional accuracy. Therefore, a color filter with a pattern retarder with little positional deviation between the pattern of the pixel portion and the pattern of the first retardation region and the second retardation region of the retardation layer can be obtained. By arranging and using on the outside, it becomes possible to perform three-dimensional display satisfactorily.

  In the present invention, it is preferable that the first retardation region and the second retardation region are provided in a belt-like pattern parallel to each other. This is because the pattern of the first phase difference region and the second phase difference region can be easily associated with the pattern of the pixel portion, and the positional accuracy of both can be improved.

  The present invention includes a substrate, a light-shielding portion formed in a pattern on one surface of the substrate, an alignment layer formed on one surface of the substrate, and a surface of the alignment layer A patterned retarder having a retardation layer containing a compound having refractive anisotropy formed, the retardation layer having a first retardation region and a second retardation region, and the first retardation The difference between the in-plane retardation value of the retardation layer formed in the region and the in-plane retardation value of the retardation layer formed in the second retardation region corresponds to λ / 2 minutes. And the first phase difference region and the second phase difference region are provided in a pattern along the pattern of the opening portions of the light-shielding portion corresponding to n (n is a natural number). A monochrome display substrate with a retarder is provided.

  According to the present invention, since it is possible to form the light shielding part and the pattern retarder on the surface of the same base material, the pattern of the opening part of the light shielding part and the first retardation region of the retardation layer and The pattern of the second phase difference region can be formed with good positional accuracy. Therefore, since it is possible to provide a monochrome display base material with a pattern retarder with little positional deviation between the pattern of the opening of the light shielding portion and the pattern of the first retardation region and the second retardation region of the retardation layer. By arranging and using it outside the polarizing plate of the display device, it becomes possible to perform three-dimensional display satisfactorily.

  In the present invention, it is preferable that the first retardation region and the second retardation region are provided in a belt-like pattern parallel to each other. This is because the pattern of the first phase difference region and the second phase difference region and the pattern of the opening of the light shielding part can be easily associated with each other, and the positional accuracy of both can be improved.

  The present invention includes the above-described color filter with a patterned retarder, a liquid crystal cell, and a pair of polarizing plates disposed on both sides of the liquid crystal cell, and the color filter with a patterned retarder is the pair of polarizing plates. The liquid crystal display device is provided, wherein the liquid crystal display device is disposed on the opposite side of the one polarizing plate to the liquid crystal cell side.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to set it as the liquid crystal display device which can perform a three-dimensional display favorably by arrange | positioning the color filter with a pattern retarder on the outer side of a polarizing plate.

  The present invention includes the above-described monochrome display substrate with a pattern retarder, a liquid crystal cell, and a pair of polarizing plates disposed on both sides of the liquid crystal cell, and the monochrome display substrate with the pattern retarder. Is provided on the opposite side of the pair of polarizing plates to the liquid crystal cell side of one of the polarizing plates.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to set it as the liquid crystal display device which can perform a three-dimensional display favorably by arrange | positioning the base material for monochrome displays with a pattern retarder on the outer side of a polarizing plate.

  The liquid crystal display device of the present invention suppresses the occurrence of the positional deviation of the retardation layer and the opening of the pixel portion or the light-shielding portion described above, and can perform three-dimensional display satisfactorily. The color filter with a pattern retarder and the monochrome display substrate with a pattern retarder used can be provided.

It is a schematic sectional drawing which shows an example of the color filter with a pattern retarder of this invention. It is a figure for demonstrating the phase difference layer of the pattern retarder in this invention, a 1st phase difference area | region, and a 2nd phase difference area | region. It is a schematic sectional drawing which shows the other example of the color filter with a pattern retarder of this invention. It is a schematic sectional drawing which shows the other example of the color filter with a pattern retarder of this invention. It is a schematic sectional drawing which shows the other example of the color filter with a pattern retarder of this invention. It is a figure for demonstrating the 1st phase difference area | region and 2nd phase difference area | region in this invention. It is a figure for demonstrating the pattern retarder in this invention. It is a figure for demonstrating the pattern retarder in this invention. It is a figure for demonstrating the pattern retarder in this invention. It is process drawing which shows the manufacturing method of the color filter with a pattern retarder of this invention. It is a schematic sectional drawing which shows an example of the base material for monochrome displays with a pattern retarder of this invention. It is a figure for demonstrating the phase difference layer of the pattern retarder in this invention, a 1st phase difference area | region, and a 2nd phase difference area | region. It is a schematic sectional drawing which shows the other example of the base material for monochrome displays with a pattern retarder of this invention. It is a schematic sectional drawing which shows the other example of the base material for monochrome displays with a pattern retarder of this invention. It is a schematic sectional drawing which shows an example of the liquid crystal display device of this invention. It is a schematic sectional drawing which shows the other example of the liquid crystal display device of this invention. It is the schematic which shows the other example of the liquid crystal display device of this invention. It is a schematic sectional drawing which shows the other example of the liquid crystal display device of this invention. It is a schematic sectional drawing which shows the other example of the liquid crystal display device of this invention. It is the schematic which shows the example of the liquid crystal display device which can display a three-dimensional image | video with a passive system.

The present invention relates to a color filter with a pattern retarder, a monochrome display substrate with a pattern retarder, and a liquid crystal display device using these.
Hereinafter, these inventions will be described in detail.

A. First, the color filter with a pattern retarder of the present invention will be described.
The color filter with a pattern retarder of the present invention includes a base material, a pixel portion formed in a pattern on one surface of the base material, and including a red subpixel, a green subpixel, and a blue subpixel, and the base An alignment layer formed on one surface of the material, and a pattern retarder having a retardation layer containing a compound formed on the surface of the alignment layer and having refractive anisotropy, and the retardation layer Has a first retardation region and a second retardation region, the in-plane retardation value of the retardation layer formed in the first retardation region, and the position formed in the second retardation region. The difference between the retardation layer and the in-plane retardation value is equivalent to λ / 2, and the first phase difference area and the second phase difference area each have n (n is a natural number) pixel portions. Is provided in a pattern along the pattern of And wherein the Rukoto.

Here, the in-plane retardation value is an index indicating the degree of birefringence in the in-plane direction of the refractive index anisotropic body, and the refractive index in the slow axis direction having the largest refractive index in the in-plane direction is represented by Nx. When the refractive index in the fast axis direction orthogonal to the slow axis direction is Ny and the thickness in the direction perpendicular to the in-plane direction of the refractive index anisotropic body is d,
Re [nm] = (Nx−Ny) × d [nm]
It is a value represented by. The in-plane retardation value (Re value) can be measured by, for example, KOBRA-WR manufactured by Oji Scientific Instruments Co., Ltd. by the parallel Nicol rotation method, and the in-plane retardation value of a minute region is AXOMETRICS (USA). Measurements can also be made using a Mueller matrix with an AxoScan made by the manufacturer. In the present specification, unless otherwise stated, the Re value means a value at a wavelength of 589 nm.

  Here, the color filter with a pattern retarder of the present invention will be described with reference to the drawings. 1 is a schematic sectional view showing an example of a color filter with a pattern retarder of the present invention, FIG. 2 (a) is a schematic plan view of the pattern retarder in FIG. 1, and FIG. 2 (b) is in FIG. It is explanatory drawing explaining a 1st phase difference area | region and a 2nd phase difference area | region. As illustrated in FIG. 1, a color filter 11 with a pattern retarder of the present invention is formed in a pattern on one surface of a transparent base material 1 ′ (base material 1) and the transparent base material 1 ′. Pixel portion 2 including pixel 2R, green subpixel 2G, and blue subpixel 2B, planarizing layer 4 formed on the surface of pixel portion 2, and alignment layer 3a formed on the surface of planarizing layer 4 And a patterned retarder 3 having a retardation layer 3b containing a compound formed on the surface of the alignment layer 3a and having refractive anisotropy. In addition, as illustrated in FIGS. 1 and 2, the retardation layer 3b includes a first retardation region B1 and a second retardation region B2, and the retardation layer 3b formed in the first retardation region B1. The difference between the in-plane retardation value and the in-plane retardation value of the retardation layer 3b formed in the second retardation region B2 corresponds to λ / 2, and the first retardation region B1 and Each of the second phase difference regions B2 includes a pattern retarder 3 provided in a pattern along the pattern of n (n is a natural number) pixel portions 2. In this example, the first retardation region B1 and the second retardation region B2 are provided in a belt-like pattern parallel to each other, and at least 1 in the width direction of the belt (the direction indicated by x in FIG. 2B). An example is shown in which a pattern having a pattern of pixel portions 2 is provided.

  FIG. 3 is a schematic sectional view showing another example of the color filter with a pattern retarder of the present invention. In the present invention, a polarizing plate 30 may be used as the substrate 1 of the color filter 11 with a pattern retarder. Although not shown, as a base material for a color filter with a pattern retarder, a retardation plate having an in-plane retardation value corresponding to λ / 4 (hereinafter referred to as a λ / 4 plate may be referred to). May be used). 3 that are not described in FIG. 3 can be the same as those in FIG.

According to the present invention, since it is possible to form the pixel portion and the pattern retarder on the surface of the same base material, the first retardation region and the second position of the pattern of the pixel portion and the retardation layer are provided. The pattern of the phase difference region can be formed with good positional accuracy.
This point will be described in more detail. Here, in general, a color filter of a liquid crystal display device is used together with a liquid crystal driving substrate having a liquid crystal driving element, and the pixel portion of the color filter and the liquid crystal driving element of the liquid crystal driving substrate are positioned with very high accuracy. It is necessary to match. Therefore, alignment marks for alignment are formed in advance on each base material used for the color filter and the liquid crystal drive substrate, and the pixel portion of the color filter and the liquid crystal drive element of the liquid crystal drive substrate are aligned as described above. It is formed using a photolithography method or the like with reference to the mark. In the present invention, since the color filter and the pattern retarder are formed on the same substrate, the alignment mark described above is applied not only to the pixel portion of the color filter but also to the alignment layer and the retardation layer in the pattern retarder. Since it can be formed with reference, the positional accuracy between the pattern of the pixel portion and the pattern of the first retardation region and the second retardation region of the retardation layer of the pattern retarder should be good. Is possible.

  Therefore, according to the present invention, it is possible to provide a color filter with a pattern retarder with little positional deviation between the pattern of the pixel portion and the pattern of the first retardation region and the second retardation region of the retardation layer. By arranging and using it outside the polarizing plate of the display device, it becomes possible to perform three-dimensional display satisfactorily.

  In addition, according to the present invention, even when the pattern of the pixel portion and the pattern of the first phase difference region and the second phase difference region are reduced along with the high definition of the liquid crystal display device, the positional deviation between the two is suppressed. Is possible. Therefore, a color filter with a pattern retarder capable of higher-definition (stereoscopic) three-dimensional display can be obtained.

In addition, according to the present invention, since the color filter with a pattern retarder can be disposed outside the polarizing plate of the liquid crystal display device, the pixel portion and the liquid crystal in the liquid crystal cell are not in direct contact with each other. Can do. Therefore, for example, it is not necessary to consider that the coloring layer material of each sub-pixel of the pixel portion elutes into the liquid crystal, and therefore high-temperature baking processing for removing impurities is required when forming the coloring layer. do not do.
Here, the retardation layer in the pattern retarder is formed by aligning a compound having refractive index anisotropy (hereinafter sometimes referred to as a refractive index anisotropic compound) in a predetermined direction, thereby causing retardation. However, in some cases, the refractive index anisotropic compound has a property that its orientation tends to be disturbed by heating. As described above, in the present invention, since a high-temperature baking treatment is not required at the time of forming the colored layer, the colored layer is formed on the surface of the retardation layer containing a refractive index anisotropic compound that is liable to be disturbed by heat. Also when formed, it becomes possible to form a colored layer while suppressing disorder of the orientation of the refractive index anisotropic compound in the retardation layer.

  Hereinafter, the details of the color filter with a pattern retarder of the present invention (hereinafter sometimes referred to as a color filter) will be described.

I. Structure of Color Filter The structure of the color filter of the present invention is not particularly limited as long as it has a pixel portion and a pattern retarder on one surface of the substrate. Specifically, it can be divided into the types of base materials. Specifically, when the base material is a transparent base material, when the base material is a polarizing plate, and the base material has a retardation plate having an in-plane retardation corresponding to λ / 4 minutes ( The structure is selected depending on the case of (λ / 4 plate).

1. When the base material is a transparent base material In the above case, as the structure of the color filter, as illustrated in FIGS. 1, 4A, and 4B, pixels are formed on one surface of the transparent base material 1 ′. The part 2 and the pattern retarder 3 may be laminated and formed, and as illustrated in FIG. 4C, the pixel part 2 is formed on one surface of the transparent substrate 1 ′. A structure in which the pattern retarder 3 is formed on the other surface of the transparent substrate 1 ′ may be used. In the present invention, the pixel part 2 and the pattern retarder 3 are laminated on one surface of the transparent substrate 1 ′, as exemplified in FIGS. 1, 4A, and 4B. A formed structure is preferred. This is because the positional deviation between the pattern of the pixel unit 2 and the pattern of the first retardation region B1 and the second retardation region B2 of the retardation layer 3b of the pattern retarder 3 can be reduced. In addition, as a specific structure of the color filter 11 in this case, as illustrated in FIG. 1 and FIG. 4A, the transparent base material 1 ′, the pixel portion 2, and the pattern retarder 3 are laminated in this order. As exemplified in FIG. 4B, a structure in which the transparent base material 1 ′, the pattern retarder 3, and the pixel unit 2 are stacked in this order can be given. In the present invention, it is particularly preferable that the transparent base material 1 ′, the pixel portion 2, and the pattern retarder 3 are laminated in this order. By adopting the above structure, the retardation layer can be prevented from being heated at the time of forming the color filter with a pattern retarder. This is because a retardation layer exhibiting phase difference can be formed.
Furthermore, in this case, as illustrated in FIG. 1, a planarization layer 4 is formed between the pixel unit 2 and the alignment layer 3a, or as illustrated in FIG. 4A, each sub-layer of the pixel unit 2 is formed. It is preferable to form the light shielding part 5 having a thickness equivalent to that of the colored layer between the colored layers of the pixels 2R, 2G, and 2B. This is because the alignment layer can be formed on the surface of the flat layer, so that it is easy to perform a rubbing treatment or the like when forming the alignment layer.
FIG. 4 is a schematic cross-sectional view showing an example of the color filter of the present invention, and reference numerals not described can be the same as those in FIG.

2. When the substrate is a polarizing plate In the above case, when the color filter of the present invention is used in a liquid crystal display device, the pixel portion and the pattern retarder are arranged outside the polarizing plate on the viewer side ( (See FIG. 16 described later).
Therefore, the color filter has a structure in which the pixel portion and the pattern retarder are stacked on one surface of the polarizing plate. Specifically, as illustrated in FIG. 3, a structure in which the polarizing plate 30, the pixel unit 2, and the pattern retarder 3 are stacked in this order, or as illustrated in FIG. 5, the polarizing plate 30, the pattern retarder 3, and A structure in which the pixel portions 2 are stacked in this order can be given. In the present invention, a structure in which a polarizing plate, a pixel portion, and a pattern retarder are laminated in this order is particularly preferable. The reason for this can be the same as the reason described in the above-mentioned section “1. When the base material is a transparent base material”, and thus the description thereof is omitted here.
FIG. 5 is a schematic sectional view showing another example of the color filter of the present invention. In addition, about the code | symbol which is not demonstrated, since it can be the same as that of FIG. 2 etc., description here is abbreviate | omitted.

3. In the case where the substrate is a λ / 4 plate In addition to the above-described transparent substrate and polarizing plate, the color filter in the present invention can use a λ / 4 plate arranged as necessary. The structure and arrangement of the color filter in this case can be the same as those described in the above-mentioned section “1. The base material is a transparent base material”, and thus the description thereof is omitted here.

II. Each structure of a color filter The color filter of this invention has a base material, a pixel part, and a pattern retarder. Each configuration will be described below.

1. Pattern Retarder The pattern retarder used in the present invention will be described. Here, the pattern retarder is provided outside the polarizing plate disposed on the viewer side of the liquid crystal display device for three-dimensional display. In addition, the pattern retarder is used together with the polarizing plate or, if necessary, in combination with a λ / 4 plate, so that the right eye image display area and the left eye image display area in the liquid crystal display device can be used. The displayed right-eye image and left-eye image are converted into circularly polarized light that is orthogonal to each other.

(1) Pattern of 1st phase difference area | region and 2nd phase difference area | region The pattern retarder in this invention has the characteristics in the pattern of the 1st phase difference area | region and 2nd phase difference area | region which a phase difference layer has. That is, the first phase difference region and the second phase difference region are provided in a pattern along the pattern of the pixel portion corresponding to n (n is a natural number).

  Here, the phrase “the retardation layer has the first retardation region and the second retardation region in a pattern” means that the retardation layer is formed in both the first retardation region and the second retardation region. It is a concept including not only the case where the retardation layer is formed only in either the first retardation region or the second retardation region. In this case, the region where the retardation layer is not formed is also treated as the first retardation region or the second retardation region in the present invention.

  Here, the pattern along the pattern of n (n is a natural number) pixel portions refers to a pattern in which at least one pixel portion is included in each of the first phase difference region and the second phase difference region. One pixel portion refers to a pattern that is not included in the two regions of the first phase difference region and the second phase difference region.

  In the present invention, the pixel portion included in the first phase difference region is used in either the right eye image display region or the left eye image display region in the liquid crystal display device, and is included in the second phase difference region. The pixel portion to be used is used for the video display area for the other eye.

  Specific patterns of the first phase difference region and the second phase difference region can be appropriately determined according to the use of the color filter with a pattern retarder, the pattern of the pixel portion, and the like, and are particularly limited. is not. More specifically, a band pattern, a mosaic pattern, a staggered pattern, and the like can be given. Especially in this invention, it is preferable that the pattern of a 1st phase difference area | region and a 2nd phase difference area | region is a strip | belt-shaped pattern mutually parallel. This is because the first phase difference region and the second phase difference region can be provided in a pattern with good positional accuracy so as to follow the pattern of the pixel portion.

The number of pixel portions included in the first phase difference region and the second phase difference region is not particularly limited as long as it is 1 or more. The pattern of the first phase difference region and the second phase difference region, the pattern of the pixel portion Etc., which are appropriately selected.
Normally, the number of pixel portions included in the first phase difference region and the second phase difference region is the same.

More specifically, when the first phase difference region and the second phase difference region are provided in a strip pattern parallel to each other, the number of pixel portions included in each region is 1 in the width direction of the strip pattern. It is preferable to be within the range of 30 to 30 pieces, particularly within the range of 1 to 20 pieces, particularly within the range of 1 to 10 pieces. This is because when the above numerical value is exceeded, it may be difficult to perform good three-dimensional display when used in a liquid crystal display device. Further, the number of pixel portions in the length direction of the strip pattern is appropriately selected depending on the type of color filter.
In the present invention, “including one pixel portion in the width direction of the belt-like pattern” refers to a pattern as illustrated in FIG. 2B or FIG. FIG. 6 is an explanatory diagram for explaining the first phase difference region and the second phase difference region in the present invention.

  When the color filter of the present invention is used for a three-dimensional display using a liquid crystal display device, the pixel portion included in the first phase difference region or the second phase difference region is the first phase difference region or the second phase difference. It is particularly preferable that the number is one when a cross section in the arrangement direction of the region pattern (in the width direction in the belt-like pattern) is observed. As a result, a better three-dimensional display can be performed in the liquid crystal display device.

  When the first phase difference region and the second phase difference region are formed in a belt-like pattern, the widths of the first phase difference region and the second phase difference region may be the same or different. However, in the present invention, it is preferable that the width of the first retardation region and the width of the second retardation region are the same. In the color filter used in the liquid crystal display device, since the pixel portions are usually formed with the same width, by making the width of the first retardation region and the second retardation region the same width, This is because it is easy to make correspondence between the pattern of the first phase difference region and the second phase difference region and the pattern of the pixel portion in the color filter.

  Specific widths of the first retardation region and the second retardation region are appropriately determined according to the use of the color filter of the present invention. As described above, the widths of the first phase difference region and the second phase difference region are not particularly limited, but are usually preferably in the range of 50 μm to 1000 μm, and in the range of 100 μm to 600 μm. Is more preferable.

(2) Form of pattern retarder The pattern retarder in the present invention has an alignment layer formed on one surface of a substrate and a retardation layer formed on the surface of the alignment layer. .
The alignment layer has a function of aligning the refractive index anisotropic compound contained in the retardation layer in a predetermined orientation, and the retardation layer contains the refractive index anisotropic compound, whereby the pattern retarder Is provided with phase difference.
In the pattern retarder according to the present invention, the retardation layer has the first retardation region and the second retardation region described above in a pattern, the in-plane retardation value in the first retardation region, and the first retardation region. The difference from the in-plane retardation value in the two phase difference region corresponds to λ / 2 minutes. As such a pattern retarder, specifically, an in-plane retardation value of the retardation layer formed in the first retardation region corresponds to λ / 4 and is formed in the second retardation region. A mode (first mode) in which the in-plane retardation value of the phase difference layer corresponds to λ / 4 minutes and the orientation directions of the refractive index anisotropic compounds contained in the phase difference layer in each region are orthogonal to each other. The in-plane retardation value of the retardation layer formed in the retardation region corresponds to λ / 4 minutes, and the in-plane retardation value of the retardation layer formed in the second retardation region is λ / 4 + λ / 2 minutes. And an aspect (second aspect) in which the orientation directions of the refractive index anisotropic compounds contained in the retardation layer of each region are the same direction, and the surface of the retardation layer formed in the first retardation region An embodiment (third embodiment) in which the inner retardation value corresponds to λ / 2 minutes can be mentioned.
Hereinafter, each aspect will be described.

(A) 1st aspect First, the 1st aspect of the pattern retarder used for this invention is demonstrated. The pattern retarder of this aspect includes an alignment layer formed on one surface of the substrate and a refractive index anisotropic compound having a refractive index anisotropy formed on the surface of the alignment layer. A retardation layer, the retardation layer has a first retardation region and a second retardation region in a pattern, and an in-plane retardation value of the retardation layer formed in the first retardation region is λ. Refractive index anisotropic compound corresponding to / 4 minutes, in-plane retardation value of retardation layer formed in second retardation region corresponding to λ / 4 minutes, and contained in retardation layer of each region The orientation directions are orthogonal to each other. Specifically, in such a pattern retarder 3, as illustrated in FIGS. 7A and 7B, the alignment layer 3a can arrange the refractive index anisotropic compound in one direction. The alignment process is performed so that the first alignment region A1 that has been subjected to the alignment process and the refractive index anisotropic compound can be aligned in a direction orthogonal to the alignment direction in the first alignment region A1. The second alignment region A2 is arranged in a pattern, and includes a retardation layer 3b formed in the first retardation region B1 and a retardation layer 3b formed in the second retardation region B2. Thickness is equivalent, and each has a thickness corresponding to λ / 4.
In addition, FIG. 7 is explanatory drawing explaining the pattern retarder of this aspect.

  In this aspect, since the first alignment region and the second alignment region are formed in a pattern in the alignment layer, the phase layer is formed on the first alignment region in the retardation layer according to the pattern. The retardation layer and the retardation layer formed on the second alignment region are arranged in a pattern. Here, in the first alignment region and the second alignment region, the directions in which the refractive index anisotropic compounds are arranged are orthogonal to each other. Therefore, the first retardation region and the second retardation region are arranged. In this case, the directions in which the refractive index is the largest (the slow axis direction) are orthogonal to each other. For this reason, in this aspect, the first retardation region having a different slow axis direction in the retardation layer and the second retardation corresponding to the pattern in which the first orientation region and the second orientation region are formed. It can be a pattern retarder in which the regions are arranged in a pattern.

(I) Orientation layer The orientation layer used for this aspect is demonstrated.
The alignment layer used in this aspect has the first alignment region that has been subjected to an alignment treatment so that the refractive index anisotropic compound contained in the retardation layer can be arranged in one direction on the surface thereof, and A second alignment region in which the refractive index anisotropic compound is subjected to an alignment process so as to be orthogonal to the arrangement direction in the first alignment region is arranged in a pattern.
Note that the pattern of the first alignment region and the second alignment region can be the same as the pattern of the first retardation region and the second retardation region described above, and thus description thereof is omitted here.

  Next, the configuration of the alignment layer used in the present invention will be described. Here, since the pattern retarder has a configuration in which a retardation layer, which will be described later, is laminated on the alignment layer, as the alignment layer formed in the first alignment region and the second alignment region. Has been subjected to an alignment treatment so that the refractive index anisotropic compounds in the retardation layer formed on the surfaces of the first alignment region and the second alignment region can be aligned so that their alignment directions are orthogonal to each other If it is, it will not specifically limit. Such a configuration of the alignment layer can be roughly divided into two modes depending on the difference in alignment treatment. That is, the alignment layer is broadly divided into an embodiment in which fine irregularities are formed on the surface (embodiment A) and an embodiment in which the alignment layer is composed of a photo-alignment film (embodiment B). be able to. Hereinafter, each aspect will be described.

(Aspect of A)
First, the alignment layer of the aspect A will be described.
The alignment layer of this embodiment has a fine concavo-convex shape formed on the surface thereof.

  The fine concavo-convex shape is not particularly limited as long as the refractive index anisotropic compound contained in the retardation layer can be arranged in a certain direction. For example, a striped line-shaped uneven structure may be used, and a mode in which minute line-shaped uneven structures are randomly formed in a substantially constant direction and discontinuous may be used.

Here, the stripe-like line-shaped uneven structure means an aspect in which convex portions formed in a wall shape are formed in a stripe shape at regular intervals, for example, when the surface is rubbed Uneven shapes such as minute scratches that are formed are not included in this.
In addition, here, the mode in which the minute line-shaped concavo-convex structure is formed in a substantially discontinuous state in a substantially constant direction is, for example, a minute scratch that is formed when the surface is rubbed. Such a line-shaped concavo-convex structure means an aspect formed in a discontinuous state in a substantially constant direction.

  In this embodiment, it is particularly preferable that the fine line-shaped uneven structure is formed in a discontinuous state at random in a substantially constant direction. Since the first alignment region and the second alignment region can be formed with better positional accuracy along the pattern of the pixel portion by using the photolithography method, the first phase difference formed on the alignment layer This is because good positional accuracy can be achieved for the region and the second phase difference region.

  As a constituent material used for forming the alignment layer in this aspect, any material can be used as long as the first alignment region and the second alignment region having a predetermined fine unevenness formed on the surface can be formed in a desired pattern. It is not particularly limited. Examples of such a constituent material include an ultraviolet curable resin, a thermosetting resin, and an electron beam curable resin.

  The method for forming the alignment layer in this aspect is not particularly limited as long as the alignment layer in which the first alignment region and the second alignment region described above are arranged on the surface can be formed. For example, the following method can be suitably used. First, after forming an alignment layer forming layer containing an alignment layer material on one surface of the substrate, a resist is applied on the alignment layer forming layer, exposed to light, and developed to form a second alignment region. A resist layer is formed in a pattern in the corresponding region. At this time, the surface of the region corresponding to the first alignment region is exposed. Next, a rubbing process is performed on the surface to form a first alignment region. Next, the resist layer is peeled off to expose the surface of the region corresponding to the second alignment region, and then a resist layer is formed in a pattern on the first alignment region by applying resist, exposing and developing again. Then, after rubbing the surface of the region corresponding to the second alignment region, the resist layer is peeled off to form the second alignment region.

(Aspect of B)
Next, the alignment layer in the mode B will be described.
The alignment layer of this embodiment is composed of a photo-alignment film.

  Here, the photo-alignment film is a film obtained by irradiating a substrate on which a constituent material of the photo-alignment film described later is applied with light with controlled polarization to cause a photoexcitation reaction (decomposition, isomerization, dimerization). By imparting anisotropy, the refractive index anisotropic compound on the film is oriented.

  The constituent material of the photo-alignment film used in this embodiment is particularly limited as long as it has an effect of orienting a refractive index anisotropic compound by irradiating light and causing a photoexcitation reaction (photo-alignment). However, such materials can be broadly divided into photoisomerization types that can change the shape of molecules and reversible orientation changes, and photoreaction types that change the molecules themselves. .

  Here, the photoisomerization reaction refers to a phenomenon in which a single compound changes to another isomer by light irradiation. By using such a photoisomerizable material, a stable isomer among a plurality of isomers is increased by light irradiation, whereby anisotropy can be easily imparted to the photo-alignment film.

  In addition, the photoreaction is not limited as long as the molecule itself is changed by light irradiation and anisotropy can be imparted to the photoalignment property of the photoalignment film, but anisotropy is imparted to the photoalignment film. Is easier, it is preferably a photodimerization reaction or a photolysis reaction. Here, the photodimerization reaction refers to a reaction in which two reaction molecules oriented in the polarization direction by light irradiation undergo radical polymerization and two molecules are polymerized. By this reaction, the alignment in the polarization direction can be stabilized and anisotropy can be imparted to the photo-alignment film. On the other hand, the photolysis reaction refers to a reaction that decomposes molecular chains such as polyimide oriented in the polarization direction by light irradiation. This reaction leaves molecular chains aligned in the direction perpendicular to the polarization direction, and can provide anisotropy to the photo-alignment film.

  In this embodiment, as the constituent material of the photo-alignment film, among the above, it is preferable to use a photoreactive material that imparts anisotropy to the photo-alignment film by causing a photodimerization reaction or a photolysis reaction.

  The wavelength region of the light that causes the photoexcitation reaction of the constituent material of the photo-alignment film is preferably in the ultraviolet light range, that is, in the range of 10 nm to 400 nm, and more preferably in the range of 250 nm to 380 nm. .

  The photoisomerization type material is not particularly limited as long as it is a material that can impart anisotropy to the photoalignment film by a photoisomerization reaction, but dichroism that makes absorption different depending on the polarization direction. It is preferable to include a photoisomerization reactive compound that has an isomerization reaction upon irradiation with light. Anisotropy can be easily imparted to the photo-alignment film by causing isomerization of the reaction site oriented in the polarization direction of the photoisomerization-reactive compound having such characteristics.

  In the photoisomerization reactive compound, the isomerization reaction is preferably a cis-trans isomerization reaction. This is because either the cis isomer or the trans isomer is increased by light irradiation, whereby anisotropy can be imparted to the photo-alignment film.

  Examples of the photoisomerization reactive compound used in this embodiment include a monomolecular compound or a polymerizable monomer that is polymerized by light or heat. These may be appropriately selected depending on the type of refractive index anisotropic compound used, but the anisotropy is stabilized by polymerizing after imparting anisotropy to the photo-alignment film by light irradiation. It is preferable to use a polymerizable monomer. Among such polymerizable monomers, after anisotropy is imparted to the photo-alignment film, it can be easily polymerized while maintaining the anisotropy in a good state, so that it is an acrylate monomer or a methacrylate monomer. preferable.

  Specific examples of such a photoisomerization-reactive compound include compounds having a cis-trans isomerization-reactive skeleton such as an azobenzene skeleton or a stilbene skeleton.

  Among the photomolecular isomerization reactive compounds of the monomolecular compound or polymerizable monomer as described above, the photoisomerization reactive compound used in this embodiment is preferably a compound having an azobenzene skeleton in the molecule. This is because the azobenzene skeleton contains a lot of π electrons, and thus has a high interaction with liquid crystal molecules, and is particularly suitable for controlling the alignment of a liquid crystal material that is preferably used as a refractive index anisotropic compound.

  In addition, the photoreactive material utilizing the photodimerization reaction is not particularly limited as long as it is a material that can impart anisotropy to the photoalignment film by the photodimerization reaction, but it is a radical polymerizable material. It is preferable to include a photodimerization reactive compound having a dichroism having a functional group and different absorption depending on the polarization direction. This is because by radical polymerization of the reaction site oriented in the polarization direction, the orientation of the photodimerization reactive compound is stabilized and anisotropy can be easily imparted to the photo-alignment film.

  Examples of the photodimerization reactive compound having such characteristics include a dimerization reactive polymer having at least one reactive site selected from cinnamate ester, coumarin, quinoline, chalcone group and cinnamoyl group as a side chain. Can do. Among these, the photodimerization reactive compound is preferably a dimerization reactive polymer containing any one of cinnamate ester, coumarin and quinoline as a side chain. This is because anisotropy can be easily imparted to the photo-alignment film by radical polymerization of α and β unsaturated ketone double bonds aligned in the polarization direction as reaction sites.

  The main chain of the dimerization reactive polymer is not particularly limited as long as it is generally known as a polymer main chain, but the reaction sites of the side chains such as aromatic hydrocarbon groups are not limited. It is preferable that it does not have a substituent containing a lot of π electrons that hinders the interaction.

  Furthermore, examples of the photoreactive material utilizing photolysis reaction include polyimide “RN1199” manufactured by Nissan Chemical Industries, Ltd.

  Moreover, the constituent material of the photo-alignment film used in this embodiment may contain an additive within a range that does not hinder the optical alignment property of the photo-alignment film. Examples of the additive include a polymerization initiator and a polymerization inhibitor.

  Next, the photo-alignment processing method will be described. First, a coating liquid obtained by diluting the constituent material of the above-described photo-alignment film with an organic solvent is applied on one surface of the substrate and dried. In this case, the content of the photodimerization reactive compound or the photoisomerization reactive compound in the coating liquid is preferably in the range of 0.05% by weight to 10% by weight, More preferably, it is in the range of 2% by weight. If the content is smaller than the above range, it will be difficult to impart an appropriate anisotropy to the alignment film. Conversely, if the content is larger than the above range, the viscosity of the coating liquid will increase, so a uniform coating film will be formed. It is because it becomes difficult to form.

  As a coating method, a spin coating method, a roll coating method, a rod bar coating method, a spray coating method, an air knife coating method, a slot die coating method, a wire bar coating method, or the like can be used.

  The thickness of the film obtained by applying the above constituent materials is preferably in the range of 1 nm to 1000 nm, more preferably in the range of 3 nm to 100 nm. This is because if the thickness of the film is thinner than the above range, sufficient optical alignment may not be obtained, and conversely, if the thickness is thicker than the above range, it may be disadvantageous in cost.

The obtained film can impart anisotropy by causing a photoexcitation reaction by irradiating light with polarization controlled. The wavelength range of the light to be irradiated may be appropriately selected according to the constituent material of the photo-alignment film to be used, but is preferably in the ultraviolet light range, that is, in the range of 100 nm to 400 nm, more preferably 250 nm. Within the range of ˜380 nm.
Moreover, in this invention, a 1st orientation area | region and a 2nd orientation area | region can be formed in a photo-alignment film by irradiating the light which controlled the said change in pattern shape. Examples of the method of irradiating the light in a pattern include a method of irradiating the light using a photomask.

  The polarization direction is not particularly limited as long as it can cause the photoexcitation reaction. However, since the orientation state of the refractive index anisotropic compound can be made favorable, Therefore, it is preferable that the angle is within the range of 0 ° to 45 °, more preferably within the range of 20 ° to 45 °.

  Furthermore, when a polymerizable monomer is used as a constituent material of the photo-alignment film, among the above photoisomerization-reactive compounds, after photo-alignment treatment, it is polymerized by heating to form a photo-alignment film. The provided anisotropy can be stabilized.

(Ii) Retardation layer The retardation layer in this aspect is demonstrated.
The retardation layer used in this embodiment exhibits a retardation by containing a refractive index anisotropic compound described later. The degree of the retardation is the refractive index anisotropy. It is determined depending on the type of compound and the thickness of the retardation layer. Therefore, the thickness of the retardation layer in this embodiment is formed within a range in which the in-plane retardation of the retardation layer corresponds to λ / 4 minutes. In the retardation layer in this aspect, the thicknesses of the first retardation region and the second retardation region are substantially the same.

  Specifically, the in-plane retardation value of the retardation layer is preferably in the range of 100 nm to 160 nm, more preferably in the range of 110 nm to 150 nm, and in the range of 120 nm to 140 nm. More preferably. In the retardation layer in this aspect, the in-plane retardation values indicated by the first retardation region and the second retardation region are substantially the same except that the direction of the slow axis is different.

  In this embodiment, when the thickness of the retardation layer is set to a distance within a range in which the in-plane retardation of the retardation layer corresponds to λ / 4 minutes, the specific distance is described later. It is appropriately determined depending on the type of refractive index anisotropic compound. However, the distance is usually in the range of 0.5 μm to 2 μm as long as it is a refractive index anisotropic compound generally used in the retardation layer in this embodiment, but is not limited thereto.

  Next, the refractive index anisotropic compound contained in the retardation layer will be described. The refractive index anisotropic compound used in this embodiment has refractive index anisotropy. The refractive index anisotropic compound contained in the retardation layer in this embodiment is not particularly limited as long as it can impart desired retardation to the retardation layer in this embodiment by arranging regularly. It is not something. The refractive index anisotropic compound used in this embodiment is preferably a rod-like compound, and particularly preferably a liquid crystalline material exhibiting liquid crystallinity. This is because the liquid crystalline material has a large refractive index anisotropy, so that it becomes easy to impart a desired retardation to the pattern retarder.

  As said liquid crystalline material used for this aspect, the material which shows liquid crystal phases, such as a nematic phase and a smectic phase, can be mentioned, for example. In the present embodiment, any material exhibiting any of these liquid crystal phases can be suitably used, but it is particularly preferable to use a liquid crystalline material exhibiting a nematic phase. This is because a liquid crystalline material exhibiting a nematic phase is easily arranged regularly as compared with liquid crystalline materials exhibiting other liquid crystal phases.

  In this embodiment, it is preferable to use a material having spacers at both ends of the mesogen as the liquid crystalline material exhibiting the nematic phase. This is because a liquid crystalline material having spacers at both ends of the mesogen is excellent in flexibility, and by using such a liquid crystalline material, the pattern retarder can be made excellent in transparency.

  Furthermore, the refractive index anisotropic compound used in this embodiment is preferably one having a polymerizable functional group in the molecule, and more preferably one having a polymerizable functional group capable of three-dimensional crosslinking. It is done. Since the refractive index anisotropic compound has a polymerizable functional group, it becomes possible to polymerize and fix the refractive index anisotropic compound, so that the alignment stability is excellent and the retardation changes with time. This is because it is possible to obtain a retardation layer that hardly occurs. In addition, when the refractive index anisotropic compound which has a polymeric functional group is used, the refractive index anisotropic compound bridge | crosslinked by the polymeric functional group will contain in the phase difference layer in this aspect.

  The “three-dimensional cross-linking” means that liquid crystal molecules are polymerized three-dimensionally to form a network (network) structure.

  Examples of the polymerizable functional group include polymerizable functional groups that are polymerized by the action of ionizing radiation such as ultraviolet rays and electron beams, or heat. Representative examples of these polymerizable functional groups include radically polymerizable functional groups or cationic polymerizable functional groups. Further, representative examples of radically polymerizable functional groups include functional groups having at least one addition-polymerizable ethylenically unsaturated double bond, and specific examples include vinyl groups having or not having substituents, An acrylate group (generic name including an acryloyl group, a methacryloyl group, an acryloyloxy group, and a methacryloyloxy group) and the like can be given. Moreover, an epoxy group etc. are mentioned as a specific example of the said cation polymerizable functional group. In addition, examples of the polymerizable functional group include an isocyanate group and an unsaturated triple bond. Among these, from the viewpoint of the process, a functional group having an ethylenically unsaturated double bond is preferably used.

Furthermore, the refractive index anisotropic compound in this embodiment is a liquid crystalline material exhibiting liquid crystallinity and particularly preferably has a polymerizable functional group at the terminal. By using such a liquid crystalline material, for example, they can be polymerized three-dimensionally to form a network structure, so that they have alignment stability and excellent optical properties. This is because the retardation layer can be formed.
In this embodiment, even when a liquid crystalline material having a polymerizable functional group at one end is used, the alignment can be stabilized by crosslinking with other molecules.

  Specific examples of the refractive index anisotropic compound used in this embodiment include compounds represented by the following formulas (1) to (17).

  In this embodiment, the refractive index anisotropic compound may be used alone or in combination of two or more. For example, when the refractive index anisotropic compound is used as a mixture of a liquid crystalline material having one or more polymerizable functional groups at both ends and a liquid crystalline material having one or more polymerizable functional groups at one end The polymerization density (crosslinking density) and optical properties can be arbitrarily adjusted by adjusting the blending ratio of the two, which is preferable. Further, from the viewpoint of ensuring reliability, a liquid crystalline material having one or more polymerizable functional groups at both ends is preferable, but from the viewpoint of liquid crystal alignment, it is preferable that there is one polymerizable functional group at both ends. .

  As a method for forming the retardation layer, since it can be a known method, description thereof is omitted here.

(B) 2nd aspect Next, the 2nd aspect of the pattern retarder used for this invention is demonstrated. The pattern retarder of this aspect includes an alignment layer formed on one surface of the substrate and a refractive index anisotropic compound having a refractive index anisotropy formed on the surface of the alignment layer. A retardation layer, the retardation layer has a first retardation region and a second retardation region in a pattern, and an in-plane retardation value of the retardation layer formed in the first retardation region is λ. Is equivalent to / 4 minutes, the in-plane retardation value of the retardation layer formed in the second retardation region is equivalent to λ / 4 + λ / 2 minutes, and the refractive index anisotropic contained in the retardation layer of each region The orientation direction of the functional compound is the same direction. Specifically, as shown in FIGS. 8A and 8B, such a pattern retarder is formed by the alignment layer 3a having a thicker surface than the thick film region A11 and the thick film region A11. Has a thin film region A12 having a small thickness in a pattern, and the surface is subjected to an alignment treatment so that the thick film region A11 and the thin film region A12 can arrange the refractive index anisotropic compound in the same direction. It has the structure applied. In this embodiment, the thickness of the retardation layer 3b formed on the surface of the thick film region A11 is smaller than the thickness of the retardation layer 3b formed on the surface of the thin film region A12. In such a pattern retarder, the retardation layer 3b formed on the thick film region A11 is used as the first retardation region B1, and the retardation layer 3b formed on the thin film region A12 is used as the first retardation region B1. Used as the two phase difference region B2.
In addition, FIG. 8 is explanatory drawing explaining the pattern retarder of this aspect.

  In this embodiment, the alignment layer is formed with the thick film region and the thin film region, and the thick film region and the thin film region have the refractive index anisotropic compound arranged in the same direction. The retardation layer formed on the thick film region and the retardation layer formed on the thin film region are different in the thickness difference between the thick film region and the thin film region. A different phase difference value (in-plane retardation) will be shown. Therefore, in this embodiment, the pattern retarder in which the first retardation region and the second retardation region having different in-plane retardation values in the retardation layer are arranged in a pattern corresponding to the thick film region and the thin film region. It can be.

(I) Orientation layer The orientation layer used for this aspect is demonstrated.
The alignment layer used in this embodiment has a thick film region with a large thickness and a thin film region with a smaller thickness than the thick film region on the surface, and the thick film region and the thin film region are in the same direction. The surface is subjected to orientation treatment so that the refractive index anisotropic compound can be arranged.

  In this embodiment, the orientation layer has a thick film region having a large thickness on the surface and a thin film region having a thickness smaller than that of the thick film region in a pattern, as shown in FIG. Not only when the thick film region and the thin film region are formed differently, but not shown, for example, when the alignment layer is formed on the pixel portion formed on the substrate, it corresponds to the thick film region. When the thickness of the colored layer in the pixel portion to be formed is thicker than the thickness of the colored layer in the pixel portion corresponding to the thin film region, and an orientation layer having an equivalent thickness is formed in each region, that is, the orientation layer The case where the thickness difference between the thick film region and the thin film region is adjusted by the colored layer located in the lower layer is included.

  The pattern of the thick film region and the thin film region can be the same as the pattern of the first phase difference region and the pattern of the second phase difference region described above, and thus description thereof is omitted here.

  The thick film region and the thin film region formed in the alignment layer in this embodiment are portions having different thicknesses on the surface of the alignment layer. As described above, in the pattern retarder, patterns having different retardation values corresponding to the thickness difference between the thick film region and the thin film region are formed in the retardation layer. Therefore, in this embodiment, the difference in thickness between the thick film region and the thin film region is the in-plane retardation value of the first retardation region of the retardation layer and the in-plane letter of the second retardation region of the retardation layer. The difference from the foundation value is a distance corresponding to λ / 2 minutes. Thereby, for example, when the retardation layer is formed on the alignment layer, the in-plane retardation of the first retardation region corresponds to λ / 4 minutes. The in-plane retardation value of the first retardation region corresponds to λ / 4 minutes, and the in-plane retardation value of the second retardation region corresponds to λ / 4 + λ / 2 minutes. In the pattern retarder according to the aspect, since the linearly polarized light passing through the first phase difference region and the second phase difference region becomes circularly polarized light that is orthogonal to each other, a three-dimensional image can be displayed with high accuracy.

  In this embodiment, the difference in thickness between the thick film region and the thin film region is the difference between the in-plane retardation value of the second retardation region and the in-plane retardation value of the first retardation region. In the case of the distance corresponding to the minute, the specific distance is appropriately determined depending on the type of refractive index anisotropic compound used in the retardation layer described later. However, the distance is usually in the range of 1.5 μm to 3.0 μm if it is a refractive index anisotropic compound generally used in this embodiment.

  The thickness of the thick film region and the thin film region is not particularly limited as long as the difference between the thick film region and the thin film region is within a predetermined range. It is not something. For example, when the thickness of the thick film region is 3.0 μm and the thickness of the thin film region is 1.0 μm, the difference is 2.0 μm, but the thickness of the thick film region is 13.0 μm and the thickness of the thin film region is 11. The difference may be 2.0 μm at 0 μm. In particular, in this embodiment, the thickness of the thick film region is preferably in the range of 1.6 μm to 20 μm, more preferably in the range of 2.5 μm to 10 μm, and in the range of 2.5 μm to 5 μm. More preferably. The thickness of the thin film region is preferably in the range of 0.1 μm to 17 μm, more preferably in the range of 1 μm to 7 μm, and still more preferably in the range of 1 μm to 4 μm.

  The thickness of the thick film region, the thickness of the thin film region, and the difference in thickness between the thick film region and the thin film region mean the distances indicated by D1, D2, and D3 in FIG. 8, respectively. .

  Since points other than those described above with respect to the alignment layer can be the same as those described in the section “(a) First aspect”, description thereof is omitted here.

(Ii) Retardation layer Next, the retardation layer in this embodiment will be described.
The refractive index anisotropy compound having refractive index anisotropy can be the same as that described in the section “(a) First aspect”, and the description thereof is omitted here. .

  The retardation layer used in the present embodiment expresses retardation by containing the refractive index anisotropic compound, and the degree of retardation is determined by the refractive index anisotropic compound. This is determined depending on the type of the retardation layer and the thickness of the retardation layer. Therefore, the thickness of the first retardation region is set within a range in which the in-plane retardation of the first retardation region corresponds to λ / 4. As a result, the thickness difference between the thick film region and the thin film region is reduced to λ / 2 by the difference between the in-plane retardation value of the first retardation region and the in-plane retardation value of the second retardation region. By setting the corresponding distance, the in-plane retardation value of the first retardation region corresponds to λ / 4 minutes, and the in-plane retardation value of the second retardation region in the retardation layer is λ / 4 + λ / 2. In the pattern retarder of such a mode, linearly polarized light passing through the first phase difference region and the second phase difference region becomes circularly polarized light that is orthogonal to each other. The 3D image can be displayed with higher accuracy.

  More specifically, the in-plane retardation value of the second retardation region is preferably in the range of 300 nm to 480 nm, more preferably in the range of 330 nm to 450 nm, and in the range of 360 nm to 420 nm. More preferably. The in-plane retardation value of the first retardation region is preferably in the range of 100 nm to 160 nm, more preferably in the range of 110 nm to 150 nm, and still more preferably in the range of 120 nm to 140 nm. . In the retardation layer in this embodiment, the in-plane retardation value of the second retardation region is different from the in-plane retardation value of the first retardation region, but the slow axis directions are almost the same. .

  In this aspect, when the thickness of the first retardation region is set to a distance within a range in which the in-plane retardation of the first retardation region corresponds to λ / 4 minutes, the specific distance is Whether to do this is appropriately determined depending on the type of refractive index anisotropic compound used in the retardation layer. However, if the distance is a refractive index anisotropic compound generally used in this embodiment, it is usually preferably in the range of 0.1 μm to 1.9 μm, and in the range of 0.25 μm to 1.75 μm. It is more preferable that it is in the range of 0.5 μm to 1.5 μm.

(C) Third Aspect Next, a third aspect of the pattern retarder used in the present invention will be described. The pattern retarder of this aspect includes an alignment layer formed on one surface of the substrate and a refractive index anisotropic compound having a refractive index anisotropy formed on the surface of the alignment layer. A retardation layer, the retardation layer has a first retardation region and a second retardation region in a pattern, and an in-plane retardation value of the retardation layer formed in the first retardation region is λ. / 2 minutes. Specifically, such a pattern retarder has a configuration in which a retardation layer 3b corresponding to an in-plane retardation of λ / 2 is formed at least in the first retardation region, as illustrated in FIG. Have
In addition, FIG. 9 is explanatory drawing explaining the pattern retarder of this aspect.

  When the pattern retarder is provided, three-dimensional display can be performed using the color filter and the λ / 4 plate of this aspect. Since this point will be described in detail in the section “C. Liquid crystal display device” to be described later, description thereof is omitted here.

(I) Retardation layer The retardation layer used in this embodiment will be described. In this embodiment, a retardation layer corresponding to an in-plane retardation of λ / 2 is formed at least in the first retardation region.

  Here, “at least the retardation layer corresponding to the in-plane retardation of λ / 2 is disposed in the first retardation region” means that the retardation layer is disposed only in the first retardation region. In addition, a case where a retardation layer that does not affect the polarization state of linearly polarized light that passes through the second retardation region is formed in the second retardation region is included. The mode of the pattern retarder of this mode will be described later.

  The refractive index anisotropic compound contained in the first retardation region will be described. The refractive index anisotropic compound used in this embodiment has refractive index anisotropy. Here, since the first retardation region exhibits a retardation having an in-plane retardation corresponding to λ / 2, the refractive index anisotropic compound is usually in the first retardation region. In this case, they are arranged in one direction.

  The refractive index anisotropic compound is not particularly limited as long as the in-plane retardation value can be imparted to the first retardation region to the extent corresponding to λ / 2. These can be the same as those described in the section “(a) First aspect”.

  The retardation layer used in this embodiment has a first retardation region whose in-plane retardation value corresponds to λ / 2 minutes, but a specific value of in-plane retardation of the first retardation region. Is usually preferably in the range of 200 nm to 300 nm, more preferably in the range of 220 nm to 280 nm, and particularly preferably in the range of 230 nm to 270 nm.

  Specifically, as the retardation layer used in this embodiment, as illustrated in FIG. 9A, an embodiment in which the retardation layer 3b is formed only in the first retardation region B1 (embodiment C) 9B and 9C, a retardation layer is formed in the first retardation region, and the polarization state of linearly polarized light that passes through the second retardation region is further transmitted to the second retardation region. The aspect (D aspect) in which the retardation layer which does not influence was formed can be mentioned.

  The retardation layer used in this embodiment may be any one of the above-described embodiment C and the above embodiment D, but is preferably the embodiment D. This is because the retardation layer in the form D does not require the retardation layer itself to have a pattern shape, so that it is easy to form the retardation layer.

  When the retardation layer of the above aspect D is used, the retardation layer formed in the second retardation region may exhibit retardation as illustrated in FIG. 9B, or As illustrated in FIG. 9C, the phase difference may not be exhibited. However, when the phase difference is present, the direction of the slow axis is the first retardation region. The direction of the slow axis and the direction crossing 45 ° is required. Otherwise, it is difficult to display a 3D image. In particular, in this embodiment, the orientation direction of the refractive index anisotropic compound contained in the retardation layer formed in the second retardation region is contained in the retardation layer formed in the first retardation region. The direction is preferably 45 ° with respect to the orientation direction of the refractive index anisotropic compound. Further, the retardation layer formed in the second retardation region preferably has an in-plane retardation value corresponding to λ / 2. As a result, the amount of light transmitted through the first retardation region and the second retardation region in the retardation layer can be made substantially the same, and the boundary between the first retardation region and the second retardation region can be made inconspicuous. This is because an excellent display quality can be obtained. That is, when used in a liquid crystal display device, if the polarization axis of the polarizing plate and the slow axis of the second retardation region are parallel or orthogonal, the effect of the second retardation layer converting the polarization state is zero. Therefore, the in-plane retardation value of the second retardation region may be any number, but when the transmittance of light transmitted through the first retardation region and the second retardation region is changed, This is because it is more preferable that the first retardation region and the second retardation region are made of the same material and have the same film thickness because the boundary of the second retardation region is visible.

  The thickness of the retardation layer used in the present embodiment is not particularly limited as long as the in-plane retardation value of the first retardation region is within a range corresponding to λ / 2 minutes. Although it can be appropriately determined according to the type of refractive index anisotropic compound, etc., it is usually preferably in the range of 0.5 μm to 4 μm, and more preferably in the range of 1 μm to 3 μm. Preferably, it is in the range of 1.5 μm to 2.5 μm.

(Ii) Alignment layer Next, the alignment layer used in this embodiment will be described.
The alignment layer used in this embodiment is not particularly limited as long as the compound contained in the first retardation region can be arranged in one direction.
In addition, when the phase difference layer used for this aspect is formed in the said 1st phase difference area | region and the 2nd phase difference area | region, the orientation layer used for this aspect is an area | region corresponding to the said 1st phase difference area | region. The orientation treatment is preferably performed so that the direction in which the refractive index anisotropic compound can be arranged intersects with the region corresponding to the second retardation region by 45 °.

  Except for the points described above with respect to the alignment layer, the alignment layer can be the same as that described in the section “(a) First aspect”, and thus the description thereof is omitted here.

(D) Pattern Retarder As the form of the pattern retarder used in the present invention, the form of the first aspect or the third aspect is preferable among the above. Since the thickness of the alignment layer can be uniform, the first alignment region and the second alignment region corresponding to the first retardation region and the second retardation region are formed on the surface of the alignment layer by photolithography. This is because it can be easily formed, and alignment with the pattern of the pixel portion can be easily performed. In the present invention, the pattern retarder of the first aspect is particularly preferable. This is because a liquid crystal display device capable of three-dimensional display can be obtained without using a λ / 4 plate.

2. Pixel Unit Next, the pixel unit in the present invention will be described. The pixel portion in the present invention has a red subpixel, a green subpixel, and a blue subpixel. In the present invention, the pixel portions are arranged in a plurality of patterns on one surface of the substrate.

  The pattern arrangement of the pixel portion can be appropriately selected according to the application of the liquid crystal display device and is not particularly limited, and can be the same as that used for a color filter of a general liquid crystal display device. More specifically, the pattern arrangement can be a known arrangement such as a stripe type, a mosaic type, a triangle type, or a four-pixel arrangement type. Further, the area of the pixel portion can be arbitrarily set. In the present invention, each subpixel is usually formed with the same area.

  The subpixels constituting the pixel portion have a colored layer. The colored layer material of each color is obtained by dispersing or dissolving a colorant such as a pigment or dye of each color in a photosensitive resin.

Examples of the colorant used in the red colored layer include perylene pigments, lake pigments, azo pigments, quinacridone pigments, anthraquinone pigments, anthracene pigments, and isoindoline pigments as red pigments.
Examples of red dyes include rhodamine dyes, azo dyes, anthraquinone dyes, and cyanine dyes.
These pigments or dyes may be used alone or in combination of two or more.

Examples of the colorant used in the green coloring layer include, as the green pigment, phthalocyanine pigments such as halogen polysubstituted phthalocyanine pigments or halogen polysubstituted copper phthalocyanine pigments, isoindoline pigments, and isoindolinone pigments. It is done.
Examples of the green dye include phthalocyanine dyes, anthraquinone dyes, and triphenylmethane basic dyes.
These pigments or dyes may be used alone or in combination of two or more.

Examples of the colorant used in the blue colored layer include, for example, copper phthalocyanine pigments, anthraquinone pigments, indanthrene pigments, indophenol pigments, cyanine pigments, dioxazine pigments, triarylmethane lakes. And pigments.
Examples of blue dyes include triarylmethane dyes, anthraquinone dyes, phthalocyanine dyes, and cyanine dyes.
These pigments or dyes may be used alone or in combination of two or more.

  In the present invention, the colorant used in the blue colored layer is preferably a triarylmethane lake pigment or a triarylmethane dye. Here, the triarylmethane lake pigment or triarylmethane dye or the like refers to a lake pigment or dye containing a triarylmethane compound.

As said triarylmethane compound, what is used as a conventionally well-known blue dye can be used.
For example, triarylmethane dyes described in JP-A-2008-304766, triphenylmethane dyes described in JP-A-2000-162429, and triphenylmethane dyes described in JP-A-11-223720 are used. Can be used.
In particular, triarylmethane compounds represented by the following general formulas (1) and (2) are preferable from the viewpoints of transmittance, heat resistance, and weather resistance.
The said transmittance | permeability means the value measured using the microspectroscope OSP-SP2000 (made by OLYMPUS) about the coating film of thickness 2 micrometers-3 micrometers produced by disperse | distributing a coloring agent uniformly by 30 mass% density | concentration. . In the present invention, the transmittance of the blue colored layer is preferably 80% or more at 405 nm to 480 nm.
The heat resistance means, for example, that luminance does not decrease when color densities before and after firing are combined. The firing temperature is arbitrarily set according to the process conditions, for example, 150 ° C. to 250 ° C., and the firing time is, for example, between 10 minutes and 200 minutes.
The weather resistance means that, for example, the color difference ΔE * ab (JIS Z8729) before and after the xenon lamp (illuminance 35 mW / cm ² ) is irradiated for 100 hours to the colored layer after film formation is small. ΔE * ab is preferably 5.0 or less, more preferably 3.0 or less.

(In the general formulas (1) and (2), R ₁ represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a halogen atom, and R ₂ , R ₃ , R ₄ and R ₅ are each independently It represents a hydrogen atom, an optionally substituted alkyl group having 1 to 5 carbon atoms, an optionally substituted phenyl group or an optionally substituted benzyl group.)

R ₁ is preferably a hydrogen atom from the viewpoint of transmittance.
R ₂ , R ₃ , R ₄ and R ₅ are preferably a phenyl group or a benzyl group which may have a substituent from the viewpoint of heat resistance and weather resistance.

  A commercial item may be used for such a triarylmethane compound, for example, the brand name FANAL BLUE D6340 etc. by BASF Corporation can be used conveniently.

  When the blue color layer contains a triarylmethane compound as a colorant, the content may be adjusted as appropriate according to the required brightness, contrast, etc., for example, the total colorant of the blue color layer It is preferable to set it as 25 mass% or more with respect to mass from a viewpoint of improving a brightness | luminance, It is more preferable that it is 50 mass% or more, It is especially preferable that it is 75 mass% or more.

In addition, a triarylmethane compound containing a metal complex containing a metal such as phosphorus, molybdenum, tungsten, copper, nickel, or cobalt may be used as a colorant for the blue colored layer.
The reason for this is not clear, but it is presumed that such colorants are excellent in heat resistance and light resistance and are not easily affected by process conditions such as firing conditions at the time of forming colored pixels and the effects of substrate cleaning by UV irradiation. Is done.

As the colorant for the blue colored layer, among the above-described lake pigments or dyes containing a triarylmethane compound, triarylmethane lake pigments are preferable from the viewpoint of improving heat resistance and light resistance. Examples of the triarylmethane lake pigment include CI Pigment Blue (PB) 1, PB56, PB61 and PB62, and one or more of these triarylmethane lake pigments are included. It is preferable to do.
The total content may be adjusted as appropriate according to the required luminance, contrast, and the like. For example, setting the total content to 25% by mass or more with respect to the total mass of the entire colorant of the blue coloring layer increases the luminance. From a viewpoint, it is more preferable that it is 50 mass% or more, and it is especially preferable that it is 75 mass% or more.

In the present invention, when a triarylmethane dye or a triarylmethane lake pigment is used as a blue colorant, the blue color layer needs to adjust luminance, color, etc. in addition to the colorant described above. Accordingly, other colorants such as PB15: 1, PB15: 3, PB15: 4, PB15: 6, and PV23 can be used in combination as appropriate.
In the blue colored layer in the present invention, the content of the colorant used in combination with respect to the entire colorant is preferably less than 25% by mass from the viewpoint of securing high luminance.

  The colored layer in the present invention may contain only a dye as a colorant. When the color filter of the present invention is used in a liquid crystal display device, the pixel portion and the liquid crystal in the liquid crystal cell can be configured not to be in direct contact with each other, so that impurities can be removed when forming a colored layer. Therefore, it is possible to use a dye having low heat resistance. Moreover, it becomes possible to improve the brightness | luminance of a liquid crystal display device suitably by using dye.

  In addition, as the photosensitive resin, either a negative photosensitive resin or a positive photosensitive resin can be used, but a negative photosensitive resin is usually used. Examples of the negative photosensitive resin include those having reactive vinyl groups such as acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber.

  Further, the thickness of the colored layer used in the present invention is not particularly limited as long as it is a thickness capable of performing a desired color display in the liquid crystal display device, and is appropriately selected depending on the use of the liquid crystal display device and the like. Can do.

The method for forming a colored layer in the present invention is not particularly limited as long as a colored layer capable of performing a desired color display can be formed. Note that the color filter of the present invention can be configured so that the pixel portion and the liquid crystal in the liquid crystal cell do not come into direct contact with each other when used in a liquid crystal display device. There is an advantage that it is not necessary to perform the high-temperature baking treatment. More specifically, in a conventional method for forming a colored layer using a photolithography method, a colored layer composition is prepared, and the colored layer composition is applied onto a substrate or a pattern retarder, Subsequently, after performing a pattern exposure process and a development process, a colored layer is formed by performing a high-temperature baking process. On the other hand, in the method for forming a colored layer in the present invention, as described above, the colored layer does not need to be subjected to a high-temperature baking treatment, and therefore the solvent contained in the colored layer after pattern exposure and development treatment. It is possible to form a colored layer by drying at a temperature that can remove such as. Therefore, in the present invention, the energy required for the colored layer forming step can be reduced, and a high-temperature firing furnace or the like is not required, so that the manufacturing cost can be reduced.
In the present invention, since a high-temperature baking process is not required, a resin film can be suitably used as a base for forming the pixel portion. Moreover, it becomes possible to form a colored layer directly on the polarizing plate protective film used for the polarizing plate mentioned later. Furthermore, a decrease in the brightness of the colored layer due to the high-temperature baking treatment can be suppressed.
Furthermore, in the present invention, since a high-temperature baking treatment is not required when forming the colored layer, the colored layer is formed on the surface of the retardation layer containing a refractive index anisotropic compound that is likely to be disturbed by heat. However, it becomes possible to form a colored layer while suppressing the disorder of the orientation of the refractive index anisotropic compound in the retardation layer.

  The above-mentioned “temperature at which solvent and the like can be removed” is appropriately selected depending on the type of solvent used when the colored layer is formed, but within a range of 100 ° C. to 150 ° C. Preferably there is. It is because the fall of the brightness | luminance of the colored layer by heating can be prevented suitably because the said temperature is in the said range.

  In the above description, a method for forming a colored layer using a photolithography method has been described. However, the present invention is not limited to this, and a general method for forming a colored layer can be used in the present invention.

  In addition to the colorant and resin described above, a photopolymerization initiator may be added as a composition for the colored layer used when forming the colored layer, and further, if necessary, a sensitizer. Application improvers, development improvers, crosslinking agents, polymerization inhibitors, plasticizers, flame retardants, and the like may be added.

3. Next, the substrate used in the present invention will be described. The substrate of the present invention has the above-described pixel portion and pattern retarder formed on the surface thereof.
Specific examples of such a substrate include a transparent substrate, a polarizing plate, and a λ / 4 plate. Each will be described below.

(1) Transparent base material The transparent base material used in the present invention is not particularly limited as long as it has predetermined transparency. Among these, the transparent substrate used in the present invention preferably has a low retardation. More specifically, the transparent substrate used in the present invention preferably has an in-plane retardation value (Re value) in the range of 0 nm to 10 nm, and more preferably in the range of 0 nm to 5 nm. Preferably, it is in the range of 0 nm to 3 nm. When the in-plane retardation value of the transparent substrate is larger than the above range, for example, when the color filter of the present invention is used for a liquid crystal display device and the three-dimensional display is performed, the contrast is lowered or the three-dimensional display is reduced. This is because the appearance may deteriorate.

  The transparent substrate used in the present invention preferably has a transmittance in the visible light region of 80% or more, and more preferably 90% or more. Here, the transmittance | permeability of a transparent base material can be measured by JISK7361-1 (the test method of the total light transmittance of a plastic-transparent material).

  The transparent base material may be a transparent base material that does not have flexibility such as a glass substrate, or may be a transparent base material that has flexibility such as a resin film. It is more preferable that it is a transparent base material having properties. This is because it becomes easier to process the pattern retarder.

  Examples of the transparent base material having no flexibility include glass substrates such as blue plate glass (soda lime glass), non-alkali glass and quartz glass, and synthetic quartz plates. In the present invention, it is particularly preferable to use blue plate glass. Since the color filter with a pattern retarder in the present invention does not directly contact the liquid crystal in the liquid crystal cell, it is not necessary to consider that impurities in the glass are eluted into the liquid crystal. Thus, the manufacturing cost of the liquid crystal display device can be reduced.

  Examples of the transparent base material having flexibility such as a resin film include acetyl cellulose resins such as triacetyl cellulose, polyester resins such as polyethylene terephthalate and polyethylene naphthalate, and olefins such as polyethylene and polymethylpentene. Resin, acrylic resin, polyurethane resin, polyether sulfone, polycarbonate, polysulfone, polyether, polyetherketone, (meth) acrylonitrile, cycloolefin polymer, cycloolefin copolymer, etc. However, since the in-plane retardation value of the transparent film substrate tends to be close to zero, resins such as acetylcellulose resins, cycloolefin polymers, cycloolefin copolymers, and acrylic resins are preferred. Arbitrariness.

  The thickness of the transparent substrate can be appropriately determined according to the use of the color filter of the present invention and the material constituting the transparent substrate, and is not particularly limited, but is usually 20 μm. It is preferably in the range of ˜188 μm, more preferably in the range of 30 μm to 90 μm.

(2) Polarizing plate The polarizing plate is not particularly limited as long as the transmitted light can be linearly polarized light. Usually, a polarizer and a polarizing plate protective film disposed on both sides of the polarizer. It consists of
Moreover, when using a polarizing plate as a base material of a color filter in this invention, a pixel part and a pattern retarder are formed on the surface of a polarizing plate protective film.

  When a polarizing plate is used as the substrate, the fast axis of at least one retardation layer of the retardation layer formed in the first retardation region or the second retardation region with respect to the polarization axis of the polarizing plate The pattern retarder is formed such that the direction or the slow axis direction is 45 °.

  The polarizer used in the present invention is not particularly limited as long as the transmitted light can be linearly polarized light, and is generally known as a polarizer used for a polarizing plate for a liquid crystal display device. Things can be used. As such a polarizer, for example, a film made of polyvinyl alcohol is impregnated with iodine, and this is uniaxially stretched to form a complex of polyvinyl alcohol and iodine.

The polarizing plate protective film used in the present invention is not particularly limited as long as it can protect the polarizer and has desired transparency. Among them, the polarizing plate protective film used in the present invention preferably has a transmittance in the visible light region of 80% or more, and more preferably 90% or more.
Here, the transmittance of the polarizing plate protective film can be measured by JIS K7361-1 (a test method for the total light transmittance of a plastic-transparent material).

  Examples of the material constituting the polarizing plate protective film include cellulose derivatives, cycloolefin resins, polymethyl methacrylate, polyvinyl alcohol, polyimide, polyarylate, polyethylene terephthalate, polysulfone, polyethersulfone, amorphous polyolefin, and modified acrylic polymers. , Polystyrene, epoxy resin, polycarbonate, polyester and the like. Especially in this invention, it is preferable to use a cellulose derivative, a cycloolefin type resin, or an acrylic resin as said material.

  The cellulose derivative is not particularly limited as long as the polarizer has a function of preventing the polarizer from being exposed to moisture in the air and the like and a function of preventing a change in the dimensions of the polarizer. Absent. In particular, in the present invention, it is preferable to use cellulose esters as the cellulose derivative, and among the cellulose esters, it is preferable to use cellulose acylates. This is because cellulose acylates are advantageous in terms of availability because they are widely used industrially.

  As said cellulose acylates, C2-C4 lower fatty acid ester is preferable. The lower fatty acid ester may include only a single lower fatty acid ester such as cellulose acetate, and may include a plurality of fatty acid esters such as cellulose acetate butyrate and cellulose acetate propionate. There may be.

In the present invention, among the above lower fatty acid esters, cellulose acetate can be particularly preferably used. As the cellulose acetate, it is most preferable to use triacetyl cellulose having an average acetylation degree of 57.5 to 62.5% (substitution degree: 2.6 to 3.0). This is because such triacetylcellulose is excellent in optical isotropy.
Here, the degree of acetylation means the amount of bound acetic acid per unit mass of cellulose. The degree of acetylation can be determined by measurement and calculation of the degree of acetylation in ASTM: D-817-91 (test method for cellulose acetate and the like). In addition, the acetylation degree of the triacetyl cellulose which comprises a triacetyl cellulose film can be calculated | required by said method, after removing impurities, such as a plasticizer contained in a film.

  In addition, conventionally, when using the film which consists of a cellulose derivative as a polarizing plate protective film, adhesiveness with the polarizer which consists of polyvinyl alcohol can be improved by saponifying the surface.

  On the other hand, the cycloolefin resin is not particularly limited as long as it is a resin having a monomer unit composed of a cyclic olefin (cycloolefin). Examples of such a monomer comprising a cyclic olefin include norbornene and polycyclic norbornene monomers. In addition, as the cycloolefin resin used in the present invention, either a cycloolefin polymer (COP) or a cycloolefin copolymer (COC) can be suitably used. The cycloolefin-based resin may be a homopolymer of a monomer composed of the cyclic olefin, or may be a copolymer.

In addition, the cycloolefin resin used in the present invention preferably has a saturated water absorption at 23 ° C. of 1% by mass or less, and in particular, has a range of 0.1% by mass to 0.7% by mass. preferable. This is because by using such a cycloolefin-based resin, it is possible to make the polarizing plate less susceptible to changes in optical properties and dimensions due to water absorption.
Here, the saturated water absorption is obtained by immersing in 23 ° C. water for 1 week according to ASTM D570 and measuring the increased weight.

  Specific examples of the polarizing plate protective film made of a cycloolefin resin used in the present invention include, for example, Topas (registered trademark) manufactured by Ticona, ARTON (registered trademark) manufactured by JSR, and ZEONOR (registered trademark) manufactured by Nippon Zeon Co., Ltd. ZEONEX (registered trademark) manufactured by Nippon Zeon Co., Ltd., and Apel (registered trademark) manufactured by Mitsui Chemicals.

  In addition, the acrylic resin is not particularly limited. For example, poly (meth) acrylic acid ester such as polymethyl methacrylate, methyl methacrylate- (meth) acrylic acid copolymer, methyl methacrylate- (meth) acrylic acid. Ester copolymer, methyl methacrylate-acrylic acid ester- (meth) acrylic acid copolymer, (meth) methyl acrylate-styrene copolymer (MS resin etc.), polymer having alicyclic hydrocarbon group ( Examples thereof include methyl methacrylate-cyclohexyl methacrylate copolymer and methyl methacrylate- (meth) acrylate norbornyl copolymer). Preferably, C1-6 alkyl poly (meth) acrylate such as poly (meth) acrylate, particularly preferably methyl methacrylate as a main component (50 to 100% by weight, preferably 70 to 100% by weight). A methyl methacrylate resin is mentioned.

  Specific examples of the polarizing plate protective film made of a cycloolefin resin used in the present invention include, for example, AKRIVIEWER (registered trademark) manufactured by Nippon Shokubai Co., Ltd.

  The thickness of the polarizing plate protective film used in the present invention is not particularly limited, but it is usually preferably in the range of 5 μm to 200 μm, particularly preferably in the range of 15 μm to 150 μm, and further 30 μm to 100 μm. It is preferable to be within the range.

(3) λ / 4 plate In the present invention, it is also possible to use a λ / 4 plate as a substrate. Since such a λ / 4 plate can be the same as a known plate, description thereof is omitted here.
When a λ / 4 plate is used as a base material, the slow axis of the retardation layer formed in the first retardation region is parallel or orthogonal to the slow axis direction of the λ / 4 plate. A pattern retarder is formed as follows.

4). Other Configurations The color filter of the present invention can be added by appropriately selecting necessary configurations other than the above-described pattern retarder, pixel unit, and substrate.

In the present invention, for example, it is preferable to have a light shielding portion between the first retardation region and the second retardation region of the pattern retarder, between the pixel portions, or between the sub-pixels. Further, the light shielding part can be formed on one surface of the substrate. The light shielding part may be formed on the surface of the pattern retarder.
As such a light-shielding part, as a material of the light-shielding part, for example, a light-shielding part used in “B. Monochrome display substrate with pattern retarder” described later, and a plurality of colored layers described later are laminated. And the like. Further, since the thickness, line width, forming method, and other matters of the light shielding portion can be the same as those of the light shielding portion used in a general liquid crystal display device, description thereof is omitted here.

  In the present invention, for example, it is preferable to form a planarization layer on the surface of the pixel portion. This is because the formation of the planarization layer facilitates the formation of the alignment layer when the pattern retarder is formed on the surface of the pixel portion. Note that the planarization layer is not particularly limited as long as it has transparency, and can be the same as that used in a general liquid crystal display device, so description thereof is omitted here.

  Moreover, for example, when the base material is a transparent base material, an antiglare layer or an antireflection layer formed on the surface of the transparent base material opposite to the surface on which the alignment layer is formed can be exemplified. By forming such an antiglare layer and antireflection layer, there is an advantage that the liquid crystal display device using the color filter of the present invention can be a three-dimensional display device with good display quality. In the present invention, only one of the antireflection layer and the antiglare layer may be used, or both may be used.

III. Method for Producing Color Filter The method for producing the color filter of the present invention is not particularly limited, and may be the same as the method for forming a color filter used in a general liquid crystal display device, the method for forming a retardation layer, or the like. . As an example, the following forming method may be mentioned, but the present invention is not limited thereto.

FIG. 10 is a process diagram showing an example of a method for forming a color filter of the present invention. First, the pixel portion 2 is formed by forming a colored layer (subpixels 2R, 2G, and 2B) on one surface of the transparent substrate 1 ′ using a photolithography method or the like. Next, a planarization layer 4 containing an ultraviolet curable resin or the like is formed on the surface of the pixel portion 2 (see FIG. 10A).
Next, an alignment layer forming layer 3a ′ containing an ultraviolet curable resin or the like is formed on the surface of the planarizing layer 4, and then a resist is applied to the surface of the alignment layer forming layer 3a ′. By developing, a resist pattern layer 50 is formed that exposes the portion to be the first alignment region and protects the portion to be the second alignment region (see FIG. 10B). Next, the surface of the alignment layer forming layer 3a ′ that becomes the first alignment region is subjected to a rubbing process or the like to thereby apply an alignment regulating force to form the first alignment region A1 (see FIG. 10C). ).
Next, after removing the resist pattern layer 50, a resist is newly applied, exposed and developed to form a resist pattern layer (not shown) that protects the first alignment region A1, and the second alignment region The surface of the portion for forming the alignment layer 3a ′ is exposed. Next, the surface of the alignment layer forming layer 3a ′ that becomes the second alignment region is subjected to a rubbing process or the like to provide alignment regulating force to form the second alignment region A2, and then the resist pattern layer is peeled off. Thus, the alignment layer 3a can be formed (see FIG. 10D).
Next, a composition for a retardation layer containing a refractive index anisotropic compound is applied on the alignment layer 3a and irradiated with ultraviolet rays or the like, whereby the refractive index anisotropic compound is converted into the first alignment region A1 and the second alignment region A1. By aligning along the alignment region A2, the retardation layer 3b having the first retardation region B1 and the second retardation region B2 can be formed (see FIG. 10E).
Through the above procedure, the color filter 11 of the present invention can be formed.

B. Next, a monochrome display substrate with a pattern retarder according to the present invention will be described.
The base material for monochrome display with a pattern retarder of the present invention includes a base material, a light shielding portion formed in a pattern on one surface of the base material, and an orientation formed on one surface of the base material. And a phase retarder having a retardation layer containing a compound having a refractive anisotropy formed on the surface of the alignment layer, wherein the retardation layer has a first retardation region and a second retardation. A difference between the in-plane retardation value of the retardation layer formed in the first retardation region and the in-plane retardation value of the retardation layer formed in the second retardation region Corresponds to λ / 2, and the first phase difference region and the second phase difference region are provided in a pattern along the pattern of the opening of the light shielding portion for n (n is a natural number). It is characterized by being.

  The in-plane retardation value is the same as that described in the above-mentioned section “A. Color filter with pattern retarder”, and thus the description thereof is omitted here.

The monochrome display base material with a pattern retarder of the present invention will be described with reference to the drawings. FIG. 11 is a schematic cross-sectional view showing an example of a monochrome display substrate with a pattern retarder of the present invention, FIG. 12 (a) is a schematic plan view of the pattern retarder in FIG. 11, and FIG. It is explanatory drawing explaining the 1st phase difference area | region and 2nd phase difference area | region in FIG.
As illustrated in FIG. 11 and FIG. 12, the monochrome display substrate 12 with a pattern retarder of the present invention has a pattern on one surface of the transparent substrate 1 ′ (substrate 1) and the transparent substrate 1 ′. Formed on the surface of the light-shielding part 5, the planarization layer 4 formed on the surface of the light-shielding part 5, the alignment layer 3a formed on the surface of the planarization layer 4, and the surface of the alignment layer 3a And a patterned retarder having a retardation layer 3b containing a compound having refractive anisotropy. The retardation layer 3b has a first retardation region B1 and a second retardation region B2, and the in-plane retardation value of the retardation layer 3b formed in the first retardation region B1 and the second order The difference from the in-plane retardation value of the retardation layer 3b formed in the retardation region B2 corresponds to λ / 2, and the first retardation region B1 and the second retardation region B2 are each n (n Is a natural number) pattern retarder 3 provided in a pattern along the pattern of the openings 6 of the light shielding portions 5. In this example, the first retardation region B1 and the second retardation region B2 are provided in a belt-like pattern parallel to each other, and at least 3 in the width direction of the belt (the direction indicated by x in FIG. 12B). An example is shown in which a pattern having the pattern of the openings 6 of the corresponding light-shielding portions 5 is provided.

  FIG. 13 is a schematic cross-sectional view showing another example of the monochrome display base material with a pattern retarder of the present invention. As illustrated in FIG. 13, in the present invention, a polarizing plate 30 may be used as the base material 1, but a λ / 4 plate may be used although not shown. FIG. 13 is a schematic cross-sectional view showing another example of the monochrome display-provided base material with a pattern retarder according to the present invention. Reference numerals not described here can be the same as those in FIG. Description of is omitted.

  According to the present invention, since it is possible to form the light shielding part and the pattern retarder on the surface of the same base material, the pattern of the opening part of the light shielding part and the first retardation region of the retardation layer and The pattern of the second phase difference region can be formed with good positional accuracy. Therefore, since it is possible to provide a monochrome display base material with a pattern retarder with little positional deviation between the pattern of the opening of the light shielding portion and the pattern of the first retardation region and the second retardation region of the retardation layer. By arranging and using it outside the polarizing plate of the display device, it becomes possible to perform three-dimensional display satisfactorily.

  Hereinafter, the monochrome display base material with a pattern retarder of the present invention (hereinafter, sometimes referred to as a monochrome display base material) will be described in detail.

I. First, the structure of the monochrome display substrate of the present invention will be described. The structure of the base material for monochrome display of the present invention is not particularly limited as long as it can form a light shielding portion and a pattern retarder on one surface of the base material.
The structure of the base material for monochrome display is appropriately selected depending on the type of the base material. Specifically, the base material is a transparent base material, and the base material is an observer-side polarizing plate. And the case where the substrate is a λ / 4 plate. Hereinafter, each case will be described.

1. When the base material is a transparent base material In the above case, as the structure of the color filter, as shown in FIG. 11, FIG. The part 5 and the pattern retarder 3 may be formed. As illustrated in FIG. 14C, the light shielding part 5 is formed on one surface of the transparent substrate 1 ′, and the transparent base A structure in which the pattern retarder 3 is formed on the other surface of the material 1 ′ may be employed. In the present invention, as illustrated in FIGS. 11, 14 (a) and 14 (b), the light shielding portion 5 and the pattern retarder 3 are formed on one surface side of the transparent substrate 1 ′. A structure is preferred. This is because the pattern of the opening of the light shielding part and the pattern of the first phase difference region and the second phase difference region of the pattern retarder can be formed with better positional accuracy. In addition, as a specific structure of the color filter 11 in this case, as illustrated in FIG. 14A, the light shielding portion 5 and the pattern retarder 3 are formed on the same surface of the transparent substrate 1 ′. The structure and the structure in which the light shielding part and the pattern retarder are laminated on one surface of the transparent base material, that is, as illustrated in FIG. 11, the transparent base material 1 ′, the light shielding part 5, and the pattern retarder 3 The structure laminated | stacked in order, and the structure laminated | stacked in order of transparent base material 1 ', the pattern retarder 3, and the light-shielding part 5 can be mentioned so that it may illustrate in FIG.14 (b). In the present invention, a structure in which a transparent substrate, a light shielding part, and a pattern retarder are laminated in this order is particularly preferable. This is because the retardation layer can be prevented from being heated during the formation of the monochrome display substrate. In this case, it is preferable to provide a planarizing layer between the light shielding portion and the alignment layer of the pattern retarder. This is because it becomes easy to perform a rubbing treatment or the like on the surface of the alignment layer.
FIG. 14 is a schematic cross-sectional view showing another example of the monochrome display substrate of the present invention, and reference numerals that are not described can be the same as those in FIG. 11 and the like. Omitted.

2. When the substrate is an observer-side polarizing plate In the above case, when the color filter of the present invention is used in a liquid crystal display device, the light-shielding portion and the pattern retarder are disposed outside the observer-side polarizing plate. (See FIG. 19 described later).
Therefore, the structure of the monochrome display substrate is a structure in which the pixel portion and the pattern retarder are laminated on the surface of the polarizing plate on the viewer side. Specifically, as illustrated in FIG. 13A, a structure in which the polarizing plate 30, the light-shielding portion 5, and the pattern retarder 3 are stacked in this order, or as illustrated in FIG. 13B, the polarizing plate 30, A structure in which the pattern retarder 3 and the light shielding portion 5 are stacked in this order can be given. Further, as exemplified in FIG. 13C, a structure in which the light shielding portion 5 and the pattern retarder 3 are formed on the same surface of the polarizing plate 30 can be exemplified.

3. When the substrate is a λ / 4 plate In addition to the transparent substrate and polarizing plate described above, the substrate for monochrome display of the present invention uses a λ / 4 plate arranged as necessary. Can do. The structure and arrangement of the color filter in this case can be the same as those described in the section “1. The base material is a transparent base material”, and thus the description thereof is omitted here.

II. Each structure of the base material for monochrome displays The base material for monochrome displays of this invention has a base material, a light-shielding part, and a pattern retarder. Each configuration will be described below.

1. Pattern Retarder (1) Patterns of First Phase Difference Region and Second Phase Difference Region First, patterns of the first phase difference region and the second phase difference region will be described. Each of the first phase difference region and the second phase difference region is provided in a pattern along the pattern of the openings of the light shielding portions for n (n is a natural number).
Here, the pattern along the pattern of the openings of the light shielding portions corresponding to n (n is a natural number) includes at least one light shielding portion opening in each of the first phase difference region and the second phase difference region. The pattern refers to a pattern in which the opening of one light shielding portion is not included in the two regions of the first phase difference region and the second phase difference region.

  The specific patterns of the first retardation region and the second retardation region can be appropriately determined according to the use of the monochrome display base material with a pattern retarder, the pattern of the opening of the light shielding portion, and the like. There is no particular limitation. More specifically, a band pattern, a mosaic pattern, a staggered pattern, and the like can be given. Especially in this invention, it is preferable that the pattern of a 1st phase difference area | region and a 2nd phase difference area | region is a strip | belt-shaped pattern mutually parallel. This is because the first phase difference region and the second phase difference region can be provided in a pattern with good positional accuracy so as to follow the pattern of the opening of the light shielding portion.

  The number of openings of the light shielding part included in the first phase difference region and the second phase difference region is not particularly limited as long as it is one or more, and is appropriately selected according to the pattern. In general, the number of openings of the light shielding portion included in the first phase difference region and the second phase difference region is the same.

  More specifically, in the case where the first phase difference region and the second phase difference region are provided in a strip pattern parallel to each other, the number of openings of the light shielding portion included in each region is the width of the strip pattern. It is preferable to be within the range of 1 to 90 in the direction, particularly within the range of 1 to 60, and particularly within the range of 1 to 30. This is because when the above numerical value is exceeded, it may be difficult to perform good three-dimensional display when used in a liquid crystal display device. Further, the number of the openings of the light shielding portions in the length direction of the belt-like pattern is appropriately selected depending on the type of the monochrome display base material.

  In addition, when three-dimensional display is performed using the color filter of the present invention for a liquid crystal display device, the opening included in the first retardation region or the second retardation region is the first retardation region or the second retardation. It is particularly preferable that the number is one when a cross section in the arrangement direction of the region pattern (in the width direction in the belt-like pattern) is observed. As a result, a better three-dimensional display can be performed in the liquid crystal display device.

  The patterns of the first retardation region and the second retardation region can be the same as those described in the section of “A. Color filter with pattern retarder” except for the points described above. Description of is omitted.

(2) Form of pattern retarder The form of the pattern retarder used in the present invention can be the same as that described in the section of “A. Color filter with pattern retarder” described above. Description is omitted.

2. Light-shielding part The light-shielding part in this invention is demonstrated. The light shielding portion in the present invention defines a pixel portion for monochrome display.

  The pattern arrangement of the openings of the light-shielding portion in the present invention can be the same as that used in a general liquid crystal display device. Specifically, the “A. Color filter with pattern retarder” described above is used. Since it can be the same as the pattern arrangement of the pixel portion described in the section, description thereof is omitted here.

Examples of the material of the light shielding part include a material in which a black colorant is dispersed or dissolved in a binder resin, a metal thin film such as chromium, chromium oxide, and chromium nitride.
In the present invention, when the light shielding part is formed on the surface of the pattern retarder, a black colorant dispersed or dissolved in a binder resin is preferably used.

  In the case where the light shielding portion is a material in which a black colorant is dispersed or dissolved in a binder resin, a general one can be used as the black colorant used in the light shielding portion. On the other hand, as the binder resin, it is preferable to use a resin suitable for the method for forming the light shielding portion. The method for forming the light shielding part is not particularly limited as long as it is a method capable of patterning the light shielding part. For example, a photolithography method, a printing method, an ink jet method using a photosensitive resin composition for the light shielding part. The law etc. can be mentioned.

In the above case, when a printing method or an inkjet method is used as a method for forming the light shielding portion, examples of the binder resin include polymethyl methacrylate resin, polyacrylate resin, polycarbonate resin, polyvinyl alcohol resin, polyvinyl pyrrolidone resin, hydroxy Examples thereof include ethyl cellulose resin, carboxymethyl cellulose resin, polyvinyl chloride resin, melamine resin, phenol resin, alkyd resin, epoxy resin, polyurethane resin, polyester resin, maleic acid resin, polyamide resin and the like.
In the above case, when a photolithography method is used as a method for forming the light shielding portion, the binder resin may be, for example, an acrylate-based, methacrylate-based, polyvinyl cinnamate-based, or cyclized rubber-based reactive material. A photosensitive resin having a vinyl group is used. In this case, a photopolymerization initiator may be added to the photosensitive resin composition for a light-shielding part containing a black colorant and a photosensitive resin, and further a sensitizer, a coating property improver, if necessary. A development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, and the like may be added.

On the other hand, when the light-shielding portion is a metal thin film, the metal thin film may be a laminate of two layers of CrO _x film (x is an arbitrary number) and Cr film. Alternatively, a CrO _x film (x is an arbitrary number), a CrN _y film (y is an arbitrary number), and a Cr film laminated in three layers may be used. The method for forming the light shielding part is not particularly limited as long as the light shielding part can be patterned, and examples thereof include a photolithography method, a vapor deposition method using a mask, and a printing method. .

  The thickness of the light shielding part is set to about 0.2 μm to 0.4 μm in the case of a metal thin film, and about 0.5 μm to 3 μm in the case where a black colorant is dispersed or dissolved in a binder resin. Is set.

3. Substrate Since the substrate used in the present invention can be the same as that described in the section “A. Color filter with pattern retarder” described above, description thereof is omitted here.

III. Others The base material for monochrome display of the present invention is not particularly limited as long as it has a base material, a light shielding portion, and a pattern retarder, and other necessary configurations can be appropriately selected and added. Examples of such a configuration include a planarization layer, an antireflection layer, and an antiglare layer.

  Moreover, it does not specifically limit as a manufacturing method of the base material for monochrome displays of this invention. For example, in the above-described color filter manufacturing method, a method of applying a light shielding portion forming step instead of the pixel portion forming step can be suitably used.

C. Liquid Crystal Display Device The liquid crystal display device of the present invention has two aspects depending on the difference in configuration. Specifically, the liquid crystal display apparatus includes the above-described color filter with a pattern retarder and the above-described monochrome display with a pattern retarder. And an embodiment having a substrate.
Hereinafter, each aspect will be described.

I. First Embodiment A liquid crystal display device according to a first aspect includes a color filter with a pattern retarder described above (hereinafter sometimes simply referred to as a color filter), a liquid crystal cell, and a pair of liquid crystal cells disposed on both sides of the liquid crystal cell. A polarizing plate, and the color filter with a patterned retarder is disposed on the opposite side of the liquid crystal cell side of one of the pair of polarizing plates. .

  The liquid crystal display device of this embodiment will be described with reference to the drawings. FIG. 15 is a schematic cross-sectional view showing an example of the liquid crystal display device of this embodiment. As illustrated in FIG. 15, the liquid crystal display device 100 of this embodiment includes a color filter 11 with a pattern retarder, a pair of liquid crystal cell base materials 21α and 21β, and a liquid crystal layer 22 formed therebetween. It has a cell 20 and a pair of polarizing plates 30α and 30β arranged on both sides of the liquid crystal cell 20, and the color filter 11 with a pattern retarder is arranged outside the polarizing plate 30α. In addition, the color filter 11 with a pattern retarder is usually disposed outside the polarizing plate 30α located on the viewer side in the liquid crystal display device 100 (hereinafter, may be referred to as the polarizing plate 30α on the viewer side). . In addition, a backlight 40 is usually disposed outside the polarizing plate 30β on the opposite side to the polarizing plate 30α on the viewer side.

  FIG. 16 is a schematic cross-sectional view showing another example of the liquid crystal display device of this embodiment. As illustrated in FIG. 16, when the base material 1 of the color filter 11 with a pattern retarder used in this embodiment is a polarizing plate 30α, the color filter 11 with a pattern retarder is on the observer side of the liquid crystal cell 20. The pixel unit 2 and the pattern retarder 3 are arranged on the viewer side.

  According to this aspect, by disposing the color filter with a pattern retarder on the outside of the polarizing plate, it is possible to obtain a liquid crystal display device capable of performing three-dimensional display satisfactorily.

In this aspect, by using the λ / 4 plate together with the color filter, it is possible to easily perform three-dimensional display using the liquid crystal display device of this aspect. Hereinafter, this reason will be described with reference to the drawings. FIG. 17 is a schematic view showing an example of a liquid crystal display device combined with a λ / 4 plate. As illustrated in FIG. 17, in the liquid crystal display device according to this aspect, when the pattern retarder according to the third aspect described above is included, a three-dimensional display can be performed by a passive method by arranging a λ / 4 plate. It becomes. The principle is as follows.
First, the video display area of the liquid crystal display device is divided into a plurality of types of video display areas, a right-eye video display area and a left-eye video display area, and the right-eye video display area is divided into one group. The left-eye video is displayed in the video display area of the other group. Next, as the color filter used in this aspect, the first retardation region of the retardation layer is formed so as to correspond to the arrangement pattern of the video display region for the left eye, and regions other than the first retardation region (see FIG. 17, it is assumed that nothing is formed in the area), and a pattern having a pattern retarder formed so as to correspond to the arrangement pattern of the video display area for the right eye is prepared. The color filter used in this embodiment is arranged outside the polarizing plate on the observer side, and the λ / 4 plate is arranged on the display surface side of the color filter. At this time, the direction of the slow axis of the first retardation region and the direction of the polarization axis of the polarizing plate intersect at 45 °, and further, the slow axis direction of the first retardation region and the λ / 4 plate The slow axis direction should be parallel or orthogonal. By arranging the color filter and the λ / 4 plate in this way, images displayed by the right-eye image display area and the left-eye image display area (hereinafter referred to as “right-eye image” and “left-eye image”, respectively). Is visually recognized by the observer through the following route.
That is, each image displayed by the right-eye image display area and the left-eye image display area is first transmitted through the polarizing plate, and thus is converted into linearly polarized light. Here, in FIG. 17, since the polarization axis of the polarizing plate is in the 0 ° direction, each image transmitted through the second polarizing plate is also linearly polarized light in the 0 ° direction. Next, each image converted to linearly polarized light (0 °) in this way enters the pattern retarder of the color filter used in this embodiment, but the left-eye image passes through the first phase difference region. However, since the right-eye image passes through the second retardation region in which the retardation layer is not formed, the left-eye image is transmitted through the pattern retarder as linearly polarized light (L1) having a polarization axis of 90 °. There is no change in the image for use, and the pattern retarder is transmitted with the linearly polarized light (L2) having a polarization axis of 0 °. Next, when L1 and L2 are incident on the λ / 4 plate, the left-eye image is converted into right-handed circularly polarized light (C1), and the right-eye image is converted into left-handed circularly polarized light (C2). It will be.
As described above, the right-eye video and the left-eye video that have passed through the color filter pattern retarder and the λ / 4 plate used in this aspect are converted into circularly polarized light orthogonal to each other. Wear circularly polarized glasses that use circularly polarized lenses orthogonal to each other for the left and right eye lenses so that the right-eye image passes only through the right-eye lens and the left-eye image passes only through the left-eye lens. By doing so, the image for the right eye can reach only the right eye and the image for the left eye can reach only the left eye, and three-dimensional display becomes possible.
In addition, in FIG. 17, although the example which is not formed in area | regions other than a 1st phase difference area in the phase difference layer in the pattern retarder used for this aspect was demonstrated, for example, said 1st phase difference In the region other than the region, the in-plane retardation value corresponds to λ / 2 minutes, and the slow axis direction intersects with the slow axis direction of the first phase difference region at 45 °. Even when the second retardation region having an axial direction parallel or orthogonal to the polarizing axis direction of the polarizing plate is formed, a liquid crystal display device capable of three-dimensional display can be obtained in the same manner as described above. it can.

  Hereinafter, the liquid crystal display device of this embodiment will be described.

1. Arrangement of Color Filter The arrangement of the color filter in this embodiment is not particularly limited as long as it can be arranged outside the polarizing plate. In this embodiment, the fast axis direction or the slow axis direction of the retardation layer of the color filter is arranged to be 45 ° with respect to the polarization axis direction of the polarizing plate.

As the arrangement of such color filters, when the substrate is a polarizing plate, the pixel portion and the pattern retarder formed by being laminated on the surface of the polarizing plate are positioned on the side opposite to the liquid crystal cell side. To be arranged.
On the other hand, when the substrate is a transparent substrate or a λ / 4 plate, the polarizing plate and the substrate side face each other when the pixel portion and the pattern retarder are laminated on one surface of the substrate. Thus, the color filter may be arranged, and the color filter may be arranged so that the polarizing plate faces the pixel portion and the pattern retarder side. Moreover, when the pixel part is formed on one surface of the base material and the pattern retarder is formed on the other surface, the polarizing plate and the pixel part side may be arranged to face each other. The polarizing plate and the pattern retarder side may be disposed so as to face each other.

2. Each structure of a liquid crystal display device Each structure used for the liquid crystal display device of this aspect is demonstrated.

(1) Color filter Since the color filter used in this embodiment can be the same as that described in the section “A. Color filter with pattern retarder”, description thereof is omitted here.

(2) Liquid crystal cell The liquid crystal cell in this embodiment usually has a pair of liquid crystal cell substrates and a liquid crystal layer formed between the pair of liquid crystal cell substrates. In addition, a pair of liquid crystal cell base materials is usually used as a liquid crystal driving element side substrate, where one liquid crystal cell base material has a liquid crystal driving element such as a TFT element, and the other liquid crystal cell base material is transparent. It has an electrode layer and is used as a counter substrate.
The material for the liquid crystal cell and the liquid crystal layer, the liquid crystal cell, and the method for forming the liquid crystal cell in this embodiment can be the same as those used in general liquid crystal display devices. Omitted.

(3) Polarizing plate Next, the polarizing plate in this aspect is demonstrated.
The polarizing plate in this aspect is arrange | positioned at the both sides of a liquid crystal cell. The polarizing plate can be the same as that described in the above-mentioned section “A. Color filter with pattern retarder”, and the description thereof is omitted here.

(4) Other Configurations The liquid crystal display device of this aspect is not particularly limited as long as it has the above-described configurations, and other configurations can be appropriately selected and added as necessary.
Further, in the liquid crystal display device of this aspect, usually, a backlight is disposed outside the polarizing plate located on the opposite side to the polarizing plate on the color filter arrangement side of the liquid crystal display device. Since the backlight can be the same as that used in a general liquid crystal display device, description thereof is omitted here.

3. Manufacturing Method of Liquid Crystal Display Device The manufacturing method of the liquid crystal display device of this aspect is not particularly limited, and a general manufacturing method of a liquid crystal display device can be applied. For example, a method of preparing a color filter, a liquid crystal cell, a polarizing plate, and the like and bonding each layer using an adhesive or the like can be given.

II. Second Aspect A liquid crystal display device according to a second aspect includes a monochrome display base material with a pattern retarder described above (hereinafter sometimes simply referred to as a monochrome display base material), a liquid crystal cell, and both sides of the liquid crystal cell. A monochrome display substrate with a patterned retarder is disposed on the side opposite to the liquid crystal cell side of one of the pair of polarizing plates. It is arranged.

  The liquid crystal display device of this embodiment will be described with reference to the drawings. FIG. 18 is a schematic cross-sectional view showing an example of the liquid crystal display device of this embodiment. As illustrated in FIG. 18, the liquid crystal display device 100 of this aspect includes a monochrome display base material 12 with a pattern retarder, a liquid crystal cell 20, and a pair of polarizing plates 30 α and 30 β disposed on both sides of the liquid crystal cell 20. The monochrome display base material 12 with a pattern retarder is disposed outside the polarizing plate on the viewer 30α side.

  FIG. 19 is a schematic cross-sectional view showing another example of the liquid crystal display device of this embodiment. As illustrated in FIG. 19, when the polarizing plate 30α is used as the base material of the monochrome display base material 12 with the pattern retarder in this embodiment, the light shielding unit 5 and the pattern retarder are disposed on the viewer side of the liquid crystal cell. 3 is arranged so as to be located on the viewer side.

  According to this aspect, it is possible to provide a liquid crystal display device capable of performing three-dimensional display satisfactorily by disposing the monochrome display-equipped substrate with the pattern retarder outside the polarizing plate. Moreover, according to this aspect, it is possible to provide a liquid crystal display device that can easily perform three-dimensional display by arranging a λ / 4 plate. Since this reason has been described in the above-mentioned section “I. First Mode”, description thereof is omitted here.

1. Arrangement of Monochrome Display Substrate The arrangement of the monochrome display substrate in this embodiment is not particularly limited as long as it can be arranged outside the polarizing plate. In this embodiment, the fast axis direction or the slow axis direction of the retardation layer of the monochrome display substrate is 45 ° with respect to the polarization axis direction of the polarizing plate.

In addition, when the base material is a polarizing plate, such a monochrome display base material is arranged such that the light shielding portion and the pattern retarder formed by being laminated on the surface of the polarizing plate are opposite to the liquid crystal cell side. It arrange | positions so that it may be located in the side.
On the other hand, when the base material is a transparent base material or a λ / 4 plate, the polarizing plate and the base material side face each other when the light shielding portion and the pattern retarder are laminated on one surface of the base material. Thus, the monochrome display substrate may be disposed, and the monochrome display substrate may be disposed such that the polarizing plate, the light shielding portion, and the pattern retarder side face each other. Moreover, when the light shielding part is formed on one surface of the base material and the pattern retarder is formed on the other surface, the polarizing plate and the light shielding part side may be arranged to face each other. The polarizing plate and the pattern retarder side may be disposed so as to face each other.

2. Others Since the monochrome display substrate used in the liquid crystal display device of this embodiment has been described in the above-mentioned section “B. Monochrome display substrate with pattern retarder”, description thereof is omitted here. In addition, the liquid crystal cell, the polarizing plate, the other configuration, and the manufacturing method of the liquid crystal display device can be the same as those described in the above section “I. First embodiment”. Omitted.

  This aspect is not limited to the above embodiment. The above-described embodiment is an exemplification, and this embodiment has substantially the same configuration as the technical idea described in the claims of this embodiment and exhibits any similar effect. Are included in the technical scope.

  Hereinafter, this embodiment will be specifically described with reference to Examples and Comparative Examples.

[Example 1]
(Preparation of curable resin composition)
In a polymerization tank, 63 parts by mass of methyl methacrylate (MMA), 12 parts by mass of acrylic acid (AA), 6 parts by mass of 2-hydroxyethyl methacrylate (HEMA), and 88 parts by mass of diethylene glycol dimethyl ether (DMDG) are charged. After stirring and dissolving, 7 parts by mass of 2,2′-azobis (2-methylbutyronitrile) was added and dissolved uniformly. Then, it stirred at 85 degreeC under nitrogen stream for 2 hours, and also was made to react at 100 degreeC for 1 hour. Further, 7 parts by mass of glycidyl methacrylate (GMA), 0.4 parts by mass of triethylamine, and 0.2 parts by mass of hydroquinone were added to the obtained solution, and the mixture was stirred at 100 ° C. for 5 hours. A solid content of 50%) was obtained.

  Next, the following materials were stirred and mixed at room temperature to obtain a curable resin composition.

<Composition of curable resin composition>
-16 parts by mass of the above copolymer resin solution (solid content 50%)-Dipentaerythritol pentaacrylate (Sartomer SR399)
24 parts by mass-orthocresol novolac-type epoxy resin (Oka Shell Epoxy Co., Epicoat 180S70) 4 parts by mass-2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one
4 parts by mass, 52 parts by mass of diethylene glycol dimethyl ether

(Formation of light shielding part)
First, the following components were mixed and sufficiently dispersed in a sand mill to prepare a black pigment dispersion.
<Composition of black pigment dispersion>
・ Black pigment 23 parts by mass ・ Polymer dispersing agent (Bicchemy Japan Co., Ltd. Disperbyk 111) 2 parts by mass ・ Solvent (diethylene glycol dimethyl ether) 75 parts by mass

Next, the following components were sufficiently mixed to obtain a light shielding layer composition.
<Composition of composition for light shielding part>
-61 parts by mass of the black pigment dispersion-20 parts by mass of the curable resin composition-30 parts by mass of diethylene glycol dimethyl ether

  The light shielding layer composition was coated on a 0.7 mm thick glass substrate (Asahi Glass Co., Ltd. AN material) with a spin coater and dried at 100 ° C. for 3 minutes to form a light shielding layer having a thickness of about 1 μm. The light-shielding layer is exposed to a light-shielding pattern (repetition of RGB with a 75 μm pitch stripe shape) with an ultra-high pressure mercury lamp, and then developed with a 0.05 wt% potassium hydroxide aqueous solution. Thereafter, the substrate is placed in an atmosphere at 180 ° C. The light-shielding part was formed in the area | region which should heat-process by leaving it to stand for 30 minutes and should form a light-shielding part.

(Formation of colored layer)
A red curable resin composition having the following composition is applied onto the glass substrate on which the light-shielding part is formed as described above by a spin coating method (application thickness: 2.0 μm), and then dried in an oven at 70 ° C. for 3 minutes. did. Next, a photomask is disposed at a distance of 100 μm from the coating film of the red curable resin composition, and ultraviolet rays are applied only to the region corresponding to the colored layer forming region using a 2.0 kW ultrahigh pressure mercury lamp by a proximity aligner. Irradiated for 10 seconds. Subsequently, it was immersed in 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 degreeC) for 1 minute, and alkali development was carried out, and only the uncured part of the coating film of a red curable resin composition was removed. Thereafter, the substrate was left in an atmosphere of 150 ° C. for 15 minutes to perform heat treatment, thereby forming a red relief pattern (red colored layer) in a region where a red subpixel was to be formed.
Next, using the green curable resin composition having the following composition, a green relief pattern (green colored layer) was formed in a region where a green subpixel was to be formed, in the same process as the red relief pattern formation.
Further, using a blue curable resin composition having the following composition, a blue relief pattern (blue colored layer) is formed in a region where a blue subpixel is to be formed in the same process as the red relief pattern formation, and red ( A pixel portion having subpixels composed of three colors of R), green (G), and blue (B) was formed.

<Composition of red curable resin composition>
・ C. I. Pigment Red 254 7 parts by mass, polysulfonic acid type polymer dispersant 3 parts by mass, the curable resin composition 23 parts by mass, and 3-methoxybutyl acetate 67 parts by mass

<Composition of green curable resin composition>
・ C. I. Pigment Green 58 7 parts by mass / C.I. I. Pigment Yellow 138 1 part by mass, polysulfonic acid type polymer dispersant 3 parts by mass, the curable resin composition 22 parts by mass, and 3-methoxybutyl acetate 67 parts by mass

<Composition of blue curable resin composition>
・ C. I. Pigment Blue 1 5 parts by mass, polysulfonic acid type polymer dispersant 3 parts by mass, the curable resin composition 25 parts by mass, and 3-methoxybutyl acetate 67 parts by mass

(Formation of protective film)
On the glass substrate on which the colored layer was formed as described above, the curable resin composition was applied by a spin coating method and dried to form a coating film having a dry coating film thickness of 2 μm.
A photomask is placed at a distance of 100 μm from the coating film of the curable resin composition, and a proximity aligner is used to irradiate only a region corresponding to a protective layer formation region with ultraviolet rays for 10 seconds using a 2.0 kW ultrahigh pressure mercury lamp. did. Subsequently, it was immersed in 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 degreeC) for 1 minute, and alkali image development was carried out, and only the uncured part of the coating film of curable resin composition was removed. Thereafter, the substrate was left to stand in an atmosphere at 150 ° C. for 15 minutes to perform heat treatment to form a protective film.

(Formation of pattern retarder)
An alignment film made of polyimide (SE-6210, manufactured by Nissan Chemical Industries, Ltd.) is formed on the glass substrate after the protective film is formed, and then a positive resist (DX 6270P, manufactured by AZ Electronic Materials Co., Ltd.) is formed on the alignment layer forming layer. The resist layer was formed in a pattern in a region corresponding to the second alignment region by applying and exposing and developing. At this time, the surface of the region corresponding to the first alignment region was exposed. Next, a rubbing process was performed on the surface to form a first alignment region. Next, the resist layer is peeled off to expose the surface of the region corresponding to the second alignment region, and then a resist layer is formed in a pattern on the first alignment region by applying resist, exposing and developing again. Then, after rubbing the surface of the region corresponding to the second alignment region, the resist layer was peeled off to form the second alignment region. Next, a retardation layer was formed to have a thickness of 1.0 μm on the substrate subjected to the alignment treatment so that the in-plane retardation corresponded to λ / 4 minutes. Here, the first alignment region was the first retardation region, and the in-plane retardation was 450 μm. The same was true for the second phase difference region.
In addition, the first retardation region and the second retardation region of the obtained retardation layer are provided in a belt-like pattern parallel to each other, and include a pattern of ten pixel portions in the width direction of the belt. Is provided.

(Production of liquid crystal display device)
The curable resin composition was spin-coated on a glass substrate on which TFTs were formed, and photo spacers were formed at predetermined positions. Further, an alignment film made of polyimide (SE-6210, manufactured by Nissan Chemical Co., Ltd.) is formed on the TFT substrate and the counter glass substrate, a required amount of IPS liquid crystal is dropped, and a UV curable resin (manufactured by ThreeBond, ThreeBond 3025) is applied. Used as a sealing material, bonding was performed by exposure at a dose of 400 mJ / cm ² while applying a pressure of 0.3 kgf / cm ^{2 at} room temperature, and cells were assembled to obtain a liquid crystal cell. A polarizing plate (SEG1425DU manufactured by Nitto Denko Corporation) is applied to both sides of the liquid crystal cell, a UV curable resin is applied on the substrate on which the patterned retarder is formed, and the liquid crystal so that the patterned retarder and the polarizing plate face each other. One polarizing plate of the cell and a color filter were bonded together. A backlight unit using a white LED element, a light guide plate, a prism sheet, and a brightness enhancement sheet as a light source was installed on the side opposite to the color filter.

[Example 2]
Example 1 except that the thickness of the colored layer was changed so that the in-plane retardation value of the retardation layer formed in the second retardation region was λ / 4 + λ / 2 and the rubbing direction was the same. A liquid crystal display device was produced in the same manner.

[Example 3]
The thickness of the retardation layer is changed so that the in-plane retardation value of the retardation layer formed in the first retardation region is λ / 2, and the retardation layer is not formed in the second retardation region. A liquid crystal display device was produced in the same manner as in Example 1 except that.

[Example 4]
A liquid crystal display device was produced in the same manner as in Example 1 except that the light shielding portion of the color filter was not formed.

[Example 5]
The same as in Example 1 except that a UV curable resin was applied to the back side of the glass substrate after the pattern retarder was formed, and was bonded to one polarizing plate of the liquid crystal cell so that the glass substrate and the polarizing plate face each other. Thus, a liquid crystal display device was produced.

[Comparative Example 1]
(Formation of colored layer)
A red curable resin composition having the following composition was applied by spin coating on a substrate on which a black matrix was formed in the same manner as in Example 1 (application thickness: 2.0 μm), and then in an oven at 70 ° C. for 3 minutes. Dried. Next, a photomask is placed at a distance of 100 μm from the coating film of the red curable resin composition, and ultraviolet rays are applied only to the region corresponding to the colored layer forming region using a 2.0 kW ultrahigh pressure mercury lamp by a proximity aligner. Irradiated for 10 seconds. Subsequently, it was immersed in 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 degreeC) for 1 minute, and alkali development was carried out, and only the uncured part of the coating film of a red curable resin composition was removed. Thereafter, the substrate was allowed to stand in an atmosphere of 230 ° C. for 30 minutes, so that a heat treatment was performed to form a red relief pattern (red colored layer) in a region where a red subpixel was to be formed.
Next, using the green curable resin composition having the following composition, a green relief pattern (green colored layer) was formed in a region where a green subpixel was to be formed, in the same process as the red relief pattern formation.
Further, using a blue curable resin composition having the following composition, a blue relief pattern (blue colored layer) is formed in a region where a blue subpixel is to be formed in the same process as the red relief pattern formation, and red ( A pixel portion having subpixels composed of three colors of R), green (G), and blue (B) was formed.

<Composition of red curable resin composition>
・ C. I. Pigment Red 254 7 parts by mass, polysulfonic acid type polymer dispersant 3 parts by mass, the curable resin composition 23 parts by mass, and 3-methoxybutyl acetate 67 parts by mass

<Composition of green curable resin composition>
・ C. I. Pigment Green 58 7 parts by mass / C.I. I. Pigment Yellow 138 1 part by mass, polysulfonic acid type polymer dispersant 3 parts by mass, the curable resin composition 22 parts by mass, and 3-methoxybutyl acetate 67 parts by mass

<Composition of blue curable resin composition>
・ C. I. Pigment Blue 15: 6 4 parts by mass C.I. I. Pigment Violet 23 1 part by mass, polysulfonic acid type polymer dispersant 3 parts by mass, curable resin composition 25 parts by mass, and 3-methoxybutyl acetate 67 parts by mass

(Formation of protective film)
On the substrate on which the colored layer was formed as described above, the curable resin composition was applied by spin coating and dried to form a coating film having a dry coating film thickness of 2 μm.
A photomask is placed at a distance of 100 μm from the coating film of the curable resin composition, and a proximity aligner is used to irradiate only a region corresponding to a protective layer formation region with ultraviolet rays for 10 seconds using a 2.0 kW ultrahigh pressure mercury lamp. did. Subsequently, it was immersed in 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 degreeC) for 1 minute, and alkali image development was carried out, and only the uncured part of the coating film of curable resin composition was removed. Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform a heat treatment to form a protective film.

(Spacer formation)
On the substrate on which the colored layer and the protective layer were formed as described above, the curable resin composition was applied by a spin coating method and dried to form a coating film. A photomask was placed at a distance of 100 μm from the coating film of the curable resin composition, and only a spacer formation region was irradiated with ultraviolet rays for 10 seconds using a 2.0 kW ultrahigh pressure mercury lamp by a proximity aligner. Subsequently, it was immersed in 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 degreeC) for 1 minute, and alkali image development was carried out, and only the uncured part of the coating film of curable resin composition was removed. Thereafter, the substrate was left to stand in an atmosphere at 230 ° C. for 30 minutes to perform heat treatment to form a predetermined number density.

(Production of liquid crystal display device)
An alignment film was formed on the film forming surface of the color filter obtained as described above. Next, a necessary amount of IPS liquid crystal is dropped on a glass substrate on which TFT is formed, the above color filters are overlaid, UV curable resin is used as a sealing material, and 400 mJ / cm ² is applied while applying a pressure of 0.3 kgf / cm ^{2 at} room temperature. Bonding was performed by exposure at an irradiation dose of ² , cells were assembled, and a backlight unit was installed. Finally, a pattern retarder was separately formed on the substrate, and a laminated liquid crystal display device was produced on the opposite side of the backlight unit.
In addition, about the pattern of the 1st phase difference area | region and 2nd phase difference area | region of a pattern retarder, it is provided in the strip | belt-shaped pattern mutually similarly to Example 1, and is equivalent to 10 width direction of a strip | belt. It is provided so as to include the pattern of the pixel portion.

[Comparative Example 2]
A liquid crystal display device was produced in the same manner as in Comparative Example 1 except that the light shielding portion of the color filter was not formed.

(Evaluation)
The produced liquid crystal display device was used for three-dimensional display, and visibility was evaluated visually.
With respect to the liquid crystal display devices of Examples 1 to 5 having the color filter in which the pattern retarder was formed on the pixel portion, good three-dimensional display could be performed. On the other hand, in the liquid crystal display devices of Comparative Examples 1 and 2, a portion where three-dimensional display cannot be performed is generated due to the positional deviation between the pattern of the pixel portion and the first retardation region and the second retardation region of the pattern retarder. As a result, a reduction in the visibility of the three-dimensional display was confirmed as compared with the liquid crystal display devices of Examples 1 to 5.

DESCRIPTION OF SYMBOLS 1 ... Base material 1 '... Transparent base material 2 ... Pixel part 2R ... Red subpixel 2G ... Green subpixel 2B ... Blue subpixel 3 ... Pattern retarder 3a ... Orientation layer 3b ... Phase difference layer 5 ... Light-shielding part 11 ... Pattern Color filter with a retarder 12 ... Substrate for monochrome display with a pattern retarder 20 ... Liquid crystal cells 30α, 30β, 30 ... Polarizing plate 100 ... Liquid crystal display device B1 ... First retardation region B2 ... Second retardation region

Claims (3)

A substrate;
A pixel portion formed in a pattern on one surface of the substrate, and including a red subpixel, a green subpixel, and a blue subpixel;
An alignment layer formed on one surface of the substrate, and a pattern retarder having a retardation layer containing a compound formed on the surface of the alignment layer and having refractive anisotropy,
The base material is an observer side polarizing plate located on the observer side of the liquid crystal cell in the liquid crystal display device,
The pixel unit and the pattern retarder are positioned on the viewer side than the polarizing plate on the viewer side,
The retardation layer is one layer, the retardation layer has a first retardation region and a second retardation region, and an in-plane retardation value of the retardation layer formed in the first retardation region. And the difference between the in-plane retardation value of the retardation layer formed in the second retardation region corresponds to λ / 2 minutes,
The color filter with a pattern retarder, wherein the first phase difference region and the second phase difference region are provided in a pattern along the pattern of the pixel portion corresponding to n (n is a natural number). 2. The color filter with a pattern retarder according to claim 1, wherein the first retardation region and the second retardation region are provided in a strip-like pattern parallel to each other. A color filter with a pattern retarder according to claim 1 or 2 ,
A liquid crystal cell;
A pair of polarizing plates disposed on both sides of the liquid crystal cell;
Have
The liquid crystal display device, wherein the color filter with a pattern retarder is disposed on the opposite side of the pair of polarizing plates to the liquid crystal cell side of one of the polarizing plates.

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