TWI444658B - Refractive index adjusting panel, manufacturing method thereof and display apparatus - Google Patents

Description

Refractive index adjusting panel, manufacturing method thereof and display device

The present invention relates to an optoelectronic device and its components and a method of fabricating the same, and more particularly to a display device and a method for fabricating the same and a refractive index adjustment panel.

In recent years, with the continuous advancement of display technology, users have become more and more demanding on display quality (such as image resolution, color saturation, etc.) of display devices. However, in addition to high image resolution and high color saturation, it is one of the consideration factors for the purchaser to display a stereoscopic image for the user.

In the current display technology, the stereoscopic display technology can be roughly divided into a stereoscopic view in which a user wears a special design eyeglass and an auto-stereoscopic view in which the naked eye is directly viewed. Among them, the glasses-type stereo display technology has been developed and widely used in some special applications such as military simulation or large-scale entertainment, but the glasses-type stereo display technology is difficult to use due to its convenience and comfort. popular. Therefore, the naked-eye stereoscopic display technology has gradually developed and become a new trend.

The naked-eye stereoscopic display technology can generally be achieved by using barrier light blocking, lenticular plate refractive or prismatic refraction, wherein a fixed grating is used to control the viewer's left and right eye reception. The image arrived is the current mainstream. According to the visual characteristics of the human eye, when the left and right eyes respectively view the same image content but have two images with different parallax, the human eye observes the interpretation of the two images as a stereo image. According to the difference of the grating position, the stereoscopic display technology can be roughly divided into two types: a front barrier stereoscopic display technology and a back barrier stereoscopic display technology.

It is worth noting that the use of a fixed grating to generate a stereoscopic image is a spatial-multiplexed method. Although this method can make the display panel have a stereoscopic display effect, the resolution of the stereoscopic display device is halved. . In addition, a stereoscopic display device having a fixed grating can only be used to display a stereoscopic image and cannot display a planar image. For the user, the stereoscopic display device having a fixed grating is not practical.

The present invention relates to a refractive index adjustment panel that adjusts its own refractive index of light as needed to focus the outgoing light on different or identical planes.

The invention further relates to a display device using the above-mentioned refractive index adjustment panel to display a stereoscopic image or a planar image, wherein the stereoscopic image allows the user to feel the visual effect of different depth of field.

The invention further relates to a method of manufacturing a refractive index adjusting panel for manufacturing the refractive index adjusting panel described above.

To specifically describe the contents of the present invention, a refractive index adjusting panel is proposed herein, which includes a first substrate, a second substrate, and an electrostrictive refractive index adjusting medium. The second substrate and the first substrate are disposed in parallel with each other to form a plurality of connected cavities between the first substrate and the second substrate, wherein the first substrate has a first electrode layer on a side facing the chamber, The second substrate has a second electrode layer on a side facing the chambers. The electro-refractive index adjusting medium is disposed between the first substrate and the second substrate and filled into the chamber.

To specifically describe the content of the present invention, a display device is further provided, which includes a display panel and a refractive index adjustment panel. The display panel has a plurality of sub-pixels, and the refractive index adjustment panel includes a first substrate, a second substrate, and an electro-refractive index adjusting medium. The second substrate and the first substrate are disposed in parallel with each other to form a plurality of connected chambers between the first substrate and the second substrate, wherein the first substrate has a first electrode layer on a side facing the chamber, and the second substrate The substrate has a second electrode layer on a side facing the chamber. The electro-refractive index adjusting medium is disposed between the first substrate and the second substrate and filled into the chamber.

According to an embodiment of the invention, each chamber corresponds to one or more sub-pixels. In one embodiment, the corresponding sub-pixels of each chamber constitute a pixel.

According to an embodiment of the invention, the second substrate comprises a substrate and a dielectric layer, wherein the second electrode layer and the dielectric layer are on the substrate. The dielectric layer has a plurality of recesses to form a chamber after the first substrate and the second substrate are assembled. In one embodiment, the dielectric layer covers the second electrode layer, and the second substrate further includes an alignment layer, and the alignment layer covers the dielectric layer. In another embodiment, the dielectric layer is between the substrate and the second electrode layer, and the second substrate further includes an alignment layer, wherein the alignment layer covers the second electrode layer.

According to an embodiment of the invention, the first substrate is located between the second substrate and the display panel, wherein the first substrate has a plurality of 稜鏡 structures on a surface of the display panel, and each 稜鏡 structure corresponds to the 基板 structure Chamber settings.

According to an embodiment of the invention, the display panel is a liquid crystal display panel.

According to an embodiment of the invention, the display device further includes a backlight module, wherein the display panel is located between the backlight module and the index adjustment panel.

In order to specifically describe the contents of the present invention, another method of manufacturing a refractive index adjusting panel is proposed, and the manufacturing method includes the following steps. First, a first substrate is provided, wherein the first substrate has a first electrode layer. Then, a second substrate is provided, wherein the second substrate and the first substrate are disposed in parallel with each other to form a plurality of connected chambers between the first substrate and the second substrate. Further, the second substrate has a second electrode layer on a side facing the chamber, and the first substrate has a first electrode layer on a side facing the chamber. Thereafter, an electro-refractive index adjusting medium is formed between the first substrate and the second substrate, and the electro-refractive index adjusting medium is filled into the chamber.

According to an embodiment of the invention, the method of fabricating the refractive index adjusting panel further comprises the following steps. First, a substrate is provided in which the second electrode layer is on the substrate. Then, a dielectric layer is formed on the substrate, and a plurality of recesses are formed on the dielectric layer to form a chamber after the first substrate and the second substrate are assembled.

In accordance with an embodiment of the present invention, the method of forming the recess is, for example, removing a portion of the dielectric layer by a mechanical cutter.

In accordance with an embodiment of the invention, the method of forming the recesses is, for example, by removing a portion of the dielectric layer by laser or excimer laser.

According to an embodiment of the invention, the dielectric layer is a layer of photosensitive material, and the method of forming the recess is, for example, a lithography process of the photosensitive material layer by a gray scale mask. In an embodiment, the method of fabricating the refractive index adjustment panel further comprises curing the photosensitive material layer after the lithography process.

In accordance with an embodiment of the present invention, a method of forming a pocket includes the following steps. First, a patterned mask is formed on the dielectric layer. The dielectric layer is then patterned by patterning the mask to form recesses in the dielectric layer. After that, remove the patterned mask. In an embodiment, the patterned mask is a photoresist layer.

According to an embodiment of the invention, a method of fabricating a refractive index adjustment panel further includes forming an alignment layer on the dielectric layer, wherein the dielectric layer is between the alignment layer and the second electrode layer.

According to an embodiment of the present invention, a method of fabricating a refractive index adjusting panel further includes forming an alignment layer on the second electrode layer, wherein the alignment layer is between the electro-refractive index adjusting medium and the second electrode layer.

According to an embodiment of the present invention, in the foregoing method for manufacturing a refractive index adjusting panel, the first substrate has a plurality of 稜鏡 structures on a surface opposite to the second substrate, and each 稜鏡 structure corresponds to Chamber settings.

According to an embodiment of the invention, the second substrate comprises a black matrix, wherein the black matrix is disposed adjacent to the chamber.

According to an embodiment of the invention, the second electrode layer is a common electrode.

According to an embodiment of the invention, the first electrode layer comprises a plurality of control electrodes, wherein the control electrodes are respectively arranged corresponding to the chamber.

According to an embodiment of the invention, the first substrate comprises a plurality of lines, wherein the lines are coupled to the first electrode layer and disposed adjacent to the chamber.

According to an embodiment of the invention, the first substrate comprises an alignment layer, wherein the alignment layer covers the first electrode layer.

According to an embodiment of the invention, the electrorefractive index adjusting medium is a liquid crystal material.

The display device of the present invention and its refractive index adjusting panel can adjust the refractive index of the light of the electro-refractive index adjusting medium to focus the outgoing light on different or the same plane. In this way, the display device can display a stereoscopic image or a planar image so that the user can feel the visual effect of different depth of field. Further, a method of manufacturing a refractive index adjusting panel of the present invention is used to manufacture a refractive index adjusting panel of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

1 is a cross-sectional view showing a display device according to an embodiment of the present invention. Referring to FIG. 1 , the display device 100 of the embodiment includes a display panel 200 and a refractive index adjustment panel 300 . The display panel 200 has a plurality of sub-pixels 210, wherein the display panel 200 is, for example, a liquid crystal display panel, and the sub-pixels 210 may be red sub-pixels, green sub-pixels, blue sub-pixels, etc. The secondary panel causes the display panel 200 to display a color screen. For example, the display device 100 can further be provided with a backlight module 400, wherein the display panel 200 is located between the backlight module 400 and the index adjustment panel 300.

In the embodiment, the backlight module 400 provides the light L required by the display panel 200 and the refractive index adjusting panel 300, so that the light L is incident on the display panel 200 and emitted from the refractive index adjusting panel 300, and the user A The display screen presented by the display device 100 can be viewed.

As shown in FIG. 1, the refractive index adjusting panel 300 of the present embodiment has an electro-refractive index adjusting medium 330, which can make the display screen viewed by the user A have different depth of field effects. In detail, the light refractive index of the electro-refractive index adjusting medium 330 corresponding to the light L passing through the different pixels 210 may be different. Therefore, the light L exiting the refractive index adjusting panel 300 can be focused on different planes, so that the same display screen has different depth of field values D1, D2. In this way, the user A can view the display screen having a stereoscopic effect.

As can be seen from the above, the display device 100 of the present embodiment displays the stereoscopic display screens having different depths of field by the refractive index adjustment panel 300. As described above, the resolution of the stereoscopic display screen is equivalent to the resolution of the display panel 200, and is different from the case where the conventional stereoscopic display device reduces the resolution by half the display of the stereoscopic display device.

It should be noted that the display device 100 of the present embodiment can also be used as a display device that generally does not have a stereoscopic picture. When the light beam L passes through the refractive index of the electro-refractive index adjusting medium 330 corresponding to each pixel 210, the same display screen has the same depth of field value (for example, D1), and the display viewed by the user A is displayed. The picture does not have a stereo effect.

Next, several display devices of the present embodiment, a refractive index adjusting panel thereof, and a method of manufacturing the refractive index adjusting panel will be exemplified. However, the present invention is not limited to the following examples, which are all embodiments of the present invention.

[First Embodiment]

2 is a cross-sectional view showing a refractive index adjusting panel according to a first embodiment of the present invention. Referring to FIG. 2 , the refractive index adjusting panel 300 a of the present embodiment includes a first substrate 310 , a second substrate 320 , and an electro-refractive index adjusting medium 330 . The second substrate 320 and the first substrate 310 are disposed in parallel with each other to form a plurality of cavities C connected between the first substrate 310 and the second substrate 320, and the electro-refractive index adjusting medium 330 is disposed on the first substrate. The space between the 310 and the second substrate 320 is filled into the chamber C.

In this embodiment, the first substrate 310 has a first electrode layer 312 on a side facing the chamber C, wherein the first electrode layer 312 is composed of, for example, a plurality of control electrodes 312a, and the control electrodes 312a respectively correspond to Chamber C is set. On the other hand, the second substrate 320 has a second electrode layer 322 on a side facing the chamber C, wherein the second electrode layer 322 is, for example, a common electrode.

In detail, the second substrate 320 of the embodiment includes a substrate 320s and a dielectric layer 324, wherein the dielectric layer 324 and the second electrode layer 322 are disposed on the substrate 320s, and the dielectric layer 324 covers the second electrode. Layer 322. The dielectric layer 324 has a plurality of depressions R to form a plurality of chambers C after the first substrate 310 and the second substrate 320 are assembled. Further, in the present embodiment, each chamber C corresponds to one sub-pixel 210 (shown in FIG. 1). However, in other embodiments, each of the chambers C may correspond to two or more sub-pixels 210, and the sub-pixels 210 corresponding to each of the chambers C constitute a pixel (not shown). For example, when the sub-pixel 210 is, for example, a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the pixel corresponding to each chamber C is composed of a red sub-pixel and a green sub-picture. It consists of three elements: blue and blue. Of course, the present invention is not intended to limit the colors of the sub-pixel 210 to red, green, and blue, nor to limit the number of sub-pixels 210 constituting the pixels to three, and the color and composition of the sub-pixel 210. The number of secondary pixels 210 should be determined by the actual product.

In the present embodiment, the refractive index of the electro-refractive index adjusting medium 330 is related to the voltage value of the first electrode layer 312 and the voltage value of the second electrode layer 322. Further, when the voltage difference between the control electrode 312a and the second electrode layer 322 is changed, the refractive index of the electro-refractive index adjusting medium 330 in the chamber C corresponding to the control electrode 312a also changes. .

For example, when the electro-refractive index adjusting medium 330 is a liquid crystal material, the voltage difference ΔV between the second electrode layer 322 and the control electrode 312a can determine the arrangement of liquid crystal molecules in the chamber C, thereby determining electrorefractive. The rate is adjusted to the refractive index of the medium 330. In this way, the refractive index of the electro-refractive index adjusting medium 330 in each chamber C can be adjusted by adjusting the voltage difference ΔV between the second electrode layer 322 and the control electrode 312a corresponding to the chamber C. Differently, the optical path of the liquid crystal molecules corresponding to the light L passing through the chamber C also changes. In practice, the first substrate 310 and the second substrate 320 may further include an alignment layer 316 and an alignment layer 326 respectively, so that the liquid crystal molecules sandwiched between the alignment layers 316 and 326 have a good alignment effect. In the present embodiment, the alignment layer 316 covers the first electrode layer 312 and the alignment layer 326 covers the dielectric layer 324. Further, in the vicinity of the chamber C, liquid crystal molecules usually have poor alignment or disordered arrangement. Therefore, the second substrate 320 may further be provided with a black matrix 328 adjacent to the chamber C to shield the light passing through the liquid crystal molecules.

In this embodiment, the first electrode layer 312 and the second electrode layer 322 are transparent electrodes, and the material thereof may include a light-transmitting conductive material, such as indium-tin oxide (ITO), indium zinc oxide (indium-tin oxide). Indium-zinc oxide (IZO), aluminum-zinc oxide (AZO), gallium zinc oxide (GZO), zinc oxide (ZnO), and tin oxide (SnO2).

In this embodiment, the first substrate 310 may further be provided with a plurality of lines 318 to be respectively coupled to the control electrode 312a and provide a voltage required for the control electrode 312a. In addition, the line 318 is generally formed of an opaque conductive material. If these lines 318 are also disposed adjacent to the chamber C, the interference of light passing through the adjacent chambers C can be effectively reduced.

3A to 3C are partial cross-sectional views showing a manufacturing flow of a refractive index adjusting panel according to a first embodiment of the present invention. First, referring to FIG. 3A, a first substrate 310 is provided, wherein the first substrate 310 has a first electrode layer 312. In the present embodiment, the method of forming the first electrode layer 312 is, for example, first providing a substrate 310s, and then forming a plurality of control electrodes 312a on the substrate 310s, wherein the first electrode layer 312 is composed of the control electrodes 312a. In addition, the present embodiment can also selectively form a plurality of lines 318 on the substrate 310s, wherein the lines 318 are coupled to the first electrode layer 312.

Furthermore, referring to FIG. 3B , a second substrate 320 is provided, wherein the second substrate 320 has a second electrode layer 322 . In this embodiment, the method of forming the second electrode layer 322 is, for example, first providing a substrate 320s, and then forming a second electrode layer 322 on the substrate 320s, wherein the second electrode layer 322 of the embodiment is a common electrode. It is to be noted that, before the second electrode layer 322 is formed, a black matrix 328 and a planarization dielectric layer 340 are sequentially formed on the substrate 320s, wherein the planarization dielectric layer 340 is used. To provide a flat upper surface.

In the present embodiment, a dielectric layer 324 may be further formed on the substrate 320s having the second electrode layer 322, and a plurality of recesses R may be formed on the dielectric layer 324 to be opposite to the first substrate 310 in the subsequent step. A plurality of chambers C (shown in FIG. 2) are formed by being assembled with the second substrate 320.

Thereafter, referring to FIG. 3C, an electro-refractive index adjusting medium 330 is formed between the first substrate 310 and the second substrate 320. In this embodiment, the method of forming the electro-refractive index adjusting medium 330 is, for example, that the second substrate 320 and the first substrate 310 are disposed in parallel with each other to form a plurality of connected between the first substrate 310 and the second substrate 320. The chamber C is then filled into the chamber C by the electrostrictive refractive index adjusting medium 330. However, in other embodiments, the method of forming the electro-refractive index adjusting medium 330 may first fill the electrorefractive index adjusting medium 330 into the cavity R, and then parallel the second substrate 320 and the first substrate 310. A plurality of chambers C filled with the electro-refractive index adjusting medium 330 are formed between the first substrate 310 and the second substrate 320. In short, the present invention does not limit the order in which the first substrate 310 and the second substrate 320 are combined and the order in which the electrorefractive index adjusting medium 330 is formed.

As shown in FIG. 3C, the second substrate 320 has a second electrode layer 322 on a side facing the chamber C, and the first substrate 310 has a first electrode layer 312 on a side facing the chamber C. The control electrodes 312a are respectively disposed corresponding to the chamber C, and the line 318 and the black matrix 328 are disposed adjacent to the chamber C. Further, in the present embodiment, the electrorefractive index adjusting medium 330 is, for example, a liquid crystal material. Therefore, in the step of FIG. 3A, an alignment layer 316 is formed on the substrate 310s, wherein the alignment layer 316 covers the first electrode layer 312; and in the step of FIG. 3B, an alignment layer 326 is formed on the substrate 320s. The electrical layer 324 is between the alignment layer 326 and the second electrode layer 322.

In particular, in this embodiment, a plurality of recesses R may be formed in the step of FIG. 3B, wherein the recesses R may be formed in the second substrate 320 composed of the dielectric layer 324 and the substrate 320s. Next, several methods of forming the pockets R are exemplified, but the present invention does not limit the following methods of forming the pockets R as all the methods of forming the pockets R in the present embodiment. In addition, for convenience of explanation, the following illustrations only show the film layers such as the dielectric layer 324 and the substrate 320s, and the remaining film layers are omitted.

4A-4C are partial cross-sectional views showing a manufacturing process of a recess according to an embodiment of the present invention. In the present embodiment, the method of forming the pocket R includes the following steps. First, referring to FIG. 4A, a patterned mask PR1 is formed on the dielectric layer 324A, wherein the patterned mask PR1 is a photoresist layer. In addition, the method of forming the patterned mask PR1 is, for example, first forming a photosensitive material layer (not shown) on the dielectric layer 324A by spin coating, and then performing a lithography process on the photosensitive material layer. Then, referring to FIG. 4B, the dielectric layer 324A (shown in FIG. 4A) is patterned by patterning the mask PR1 to form a recess R in the remaining dielectric layer 324, wherein the dielectric layer is patterned. The method of 324A is, for example, a plasma etching process (Pry Etching) P1. Thereafter, referring to FIG. 4C, the patterned mask PR1 is removed.

In another embodiment, as shown in FIG. 5, the dielectric layer 324 is, for example, a photosensitive material layer PR2, and the method of forming the recess R is performed by, for example, a gray scale mask M1. Shadow process P2. Specifically, first, a dielectric material layer (not shown) having photosensitive properties is formed on the substrate 320s, and a method of forming a dielectric material layer includes a spin coating method. Then, a lithography process P2 is performed on the dielectric material layer by using a gray scale mask M1, wherein the gray scale mask M1 includes a light transmissive region, a non-transmissive region, and a semi-transmissive region with different light transmittances to form and The photosensitive material layer PR2 (dielectric layer 324) having the same or complementary pattern of the mask M1 forms a recess R. In practice, the photosensitive material layer PR2 (dielectric layer 324) may be further cured after the lithography process described above to harden the inner sidewall of the recess R.

In yet another embodiment, as shown in FIG. 6, the method of forming the recess R may also be to remove a portion of the dielectric layer 324 using a mechanical cutter. Specifically, after the mechanical processing process P3 is performed on the dielectric layer 324 by a mechanical cutter, part of the dielectric layer 324 is removed, and part of the dielectric layer 324 is retained, and the remaining portion is retained. The dielectric layer 324 forms a plurality of pockets R.

Alternatively, in another embodiment, as shown in FIG. 7, a laser or excimer laser processing process P4 is performed on the dielectric layer 324 by using a laser or excimer laser through the mask M2 to remove portions. The dielectric layer 324, while the remaining portion of the dielectric layer 324 forms a plurality of recesses R.

However, in other embodiments, an original mold may be formed by using the above-described methods for manufacturing the recesses, and then a plurality of sub-molds are formed by using the master mold, and then the sub-modules are used. A plurality of pockets R are formed in the substrate 320s or in the film layer above the substrate 320s. In this way, the productivity of fabricating the second substrate 320 having the recesses R can be improved. Wherein, the method of forming a plurality of sub-modules by using a master mold may employ an electroforming technique, and the method of forming a plurality of pockets R in the film layer of the substrate 320s or the substrate 320s by using the sub-mold may employ a hot press forming technique.

[Second embodiment]

Figure 8 is a cross-sectional view showing a display device in accordance with a second embodiment of the present invention. Referring to FIG. 8, the refractive index adjusting panel 300b of the present embodiment is similar to the refractive index adjusting panel 300 of the first embodiment, but the main difference between the two is that the first embodiment of the refractive index adjusting panel 300b is further A plurality of crucible structures 800 are disposed in a substrate 310b. In addition, the same or similar reference numerals as in the first embodiment denote the same or similar members, and the description thereof will not be repeated.

As shown in FIG. 8, the display device 100b of the present embodiment includes a display panel 200 and a refractive index adjusting panel 300b. The refractive index adjusting panel 300b includes a first substrate 310b, a second substrate 320, and an electrorefractive index. The medium 330 is adjusted. The first substrate 310b is located between the second substrate 320 and the display panel 200. The first substrate 310b has a plurality of 稜鏡 structures 800 on a surface of the display panel 200, and each 稜鏡 structure 800 corresponds to the cavities respectively. Room C is set.

As can be seen from the above, the first substrate 310b has a plurality of 稜鏡 structures 800 respectively corresponding to the chambers C on a surface facing away from the second substrate 320. When the light L provided by the backlight module 400 is obliquely incident on the display panel 200, the crucible structure 800 can change the traveling direction of the light L, thereby making the light L incident to the electro-refractive index adjusting medium 330 highly collimated. Thus, the light passing through the electro-refractive index adjusting medium 330 of the adjacent chamber C is less likely to interfere with each other. In short, the 稜鏡 structure 800 helps to improve the optical quality of the refractive index adjustment panel 300b, so that the display device 100b has a good display effect, and the screen displayed by the display device 100b can have a good stereoscopic effect.

[Third embodiment]

Figure 9 is a cross-sectional view showing a refractive index adjusting panel according to a third embodiment of the present invention. Referring to FIG. 9, the refractive index adjusting panel 300c of the present embodiment is similar to the refractive index adjusting panel 300 of the first embodiment, but the main difference between the two is that the layout of the components in the second substrate 320c of the present embodiment Different from the first embodiment. In addition, the same or similar reference numerals as in the first embodiment denote the same or similar members, and the description thereof will not be repeated.

As shown in FIG. 9, the refractive index adjusting panel 300c of the present embodiment includes a first substrate 310, a second substrate 320c, and an electro-refractive index adjusting medium 330. The second substrate 320c includes a substrate 320s and a second electrode layer. 322, dielectric layer 324, alignment layer 326, and black matrix 328. In the present embodiment, the dielectric layer 324 is located between the substrate 320s and the second electrode layer 322, and the alignment layer 326 is located between the second electrode layer 322 and the electro-refractive index adjusting medium 330.

It is worth mentioning that the refractive index adjusting panel 300c of the embodiment may further be provided with a 稜鏡 structure 800 (shown in FIG. 8) to improve its optical quality.

From the above, the approximate structure of the refractive index adjustment panel 300c of the present embodiment is known. Next, a method of manufacturing the refractive index adjustment panel 300c will be described. However, the manufacturing method of the refractive index adjusting panel 300c of the present embodiment is similar to the manufacturing method of the refractive index adjusting panel 300 of the first embodiment, but the main difference between the two is that the first embodiment is in the step of FIG. 3B. The layout of the second substrate 320 provided is not the same as the layout of the second substrate 320c provided in this embodiment.

In detail, in the embodiment, the dielectric layer 324 is located between the substrate 320s and the second electrode layer 322, and the second electrode layer 322 is sandwiched between the alignment layer 326 and the dielectric layer 324. Therefore, the method of forming the second substrate 320c in this embodiment may be to form a black matrix 328, a dielectric layer 324, a second electrode layer 322, and an alignment layer 326 on the substrate 320s. The method for forming the film layers may refer to the first method. Embodiments are not described herein. In addition, the present embodiment may further form a planarization dielectric layer 340 on the substrate 320s to provide a flat upper surface prior to forming the dielectric layer 324.

However, the remaining manufacturing steps can be referred to the first embodiment, and the description will not be repeated here.

In summary, the display device of the present invention and its refractive index adjusting panel can adjust the refractive index of the refractive index of the medium by adjusting the refractive index of the medium to focus the emitted light on different planes. In this way, the display device can display a stereoscopic image with different depth of field effects, wherein the stereoscopic image does not suffer from a case where the resolution is halved. In addition, the display device of the present invention can also display a planar image that is generally not stereoscopic, so that the user can select images of stereoscopic or planar visual effects depending on his needs. Further, a method of manufacturing a refractive index adjusting panel of the present invention is used to manufacture a refractive index adjusting panel of the present invention.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 100b. . . Display device

200. . . Display panel

210. . . Subpixel

300, 300a, 300b, 300c. . . Refractive index adjustment panel

310, 310b. . . First substrate

310s, 320s. . . Base

312. . . First electrode layer

312a. . . Control electrode

316. . . Alignment layer

318. . . line

320, 320c. . . Second substrate

322. . . Second electrode layer

324, 324A. . . Dielectric layer

328. . . Black matrix

330. . . Electrorefractive index adjusting medium

340. . . Planar dielectric layer

400. . . Backlight module

800. . .稜鏡 structure

A. . . user

C. . . Chamber

D1, D2. . . Depth of field value

L. . . Light

M1. . . Gray scale mask

M2. . . Mask

P1. . . Etching process

P2. . . Photolithography process

P3. . . Precision machining process

P4. . . Laser or excimer laser processing

PR1. . . Patterned mask

PR2. . . Photosensitive material layer

R. . . Pocket

ΔV. . . Voltage difference

1 is a cross-sectional view showing a display device according to an embodiment of the present invention.

2 is a cross-sectional view showing a refractive index adjusting panel according to a first embodiment of the present invention.

3A to 3C are partial cross-sectional views showing a manufacturing flow of a refractive index adjusting panel according to a first embodiment of the present invention.

4A-4C are partial cross-sectional views showing a manufacturing process of a recess according to an embodiment of the present invention.

5 to 7 are partial cross-sectional views showing another three forming recesses according to an embodiment of the present invention.

Figure 8 is a cross-sectional view showing a display device in accordance with a second embodiment of the present invention.

Figure 9 is a cross-sectional view showing a refractive index adjusting panel according to a third embodiment of the present invention.

300a. . . Refractive index adjustment panel

310. . . First substrate

310s, 320s. . . Base

312. . . First electrode layer

312a. . . Control electrode

316, 326. . . Alignment layer

318. . . line

320. . . Second substrate

322. . . Second electrode layer

324. . . Dielectric layer

328. . . Black matrix

330. . . Electrorefractive index adjusting medium

340. . . Planar dielectric layer

C. . . Chamber

L. . . Light

R. . . Pocket

ΔV. . . Voltage difference

Claims (37)

A refractive index adjusting panel comprises: a first substrate; a second substrate having a substrate, a dielectric layer and a black matrix, the dielectric layer is located on the substrate, and the second substrate and the first substrate are mutually Parallelly disposed to form a plurality of connected chambers between the first substrate and the second substrate, the dielectric layer having a plurality of recesses to form the cavities after the first substrate and the second substrate are assembled a black matrix disposed at an abutment of the chambers, wherein the first substrate has a first electrode layer on a side facing the chambers, and the second substrate is on a side facing the chambers Having a second electrode layer on the substrate; and an electro-refractive index adjusting medium disposed between the first substrate and the second substrate and filled in the chambers. The refractive index adjusting panel of claim 1, wherein the dielectric layer covers the second electrode layer, and the second substrate further comprises an alignment layer covering the dielectric layer. The refractive index adjusting panel of claim 1, wherein the dielectric layer is located between the substrate and the second electrode layer, and the second substrate further comprises an alignment layer covering the second electrode layer . The refractive index adjusting panel of claim 1, wherein the second electrode layer is a common electrode. The refractive index adjusting panel of claim 1, wherein the first electrode layer comprises a plurality of control electrodes respectively corresponding to the chambers. The refractive index adjusting panel of claim 1, wherein the first substrate comprises a plurality of lines coupled to the first electrode layer, and the lines are disposed adjacent to the chambers. The refractive index adjusting panel of claim 1, wherein the first substrate comprises an alignment layer covering the first electrode layer. The refractive index adjusting panel of claim 1, wherein the electrorefractive index adjusting medium is a liquid crystal material. The refractive index adjusting panel of claim 1, wherein the first substrate has a plurality of 稜鏡 structures on a surface of the second substrate, and each 稜鏡 structure corresponds to the chambers respectively. Settings. A display device comprising: a display panel having a plurality of sub-pixels; and a refractive index adjustment panel disposed opposite the display panel, the refractive index adjustment panel comprising: a first substrate; a second substrate having a substrate, a dielectric layer, and a black matrix, the dielectric layer is disposed on the substrate, the second substrate and the first substrate are disposed in parallel with each other to form a connection between the first substrate and the second substrate a chamber having a plurality of recesses for forming the chambers after the first substrate and the second substrate are assembled, the black matrix being disposed at an abutment of the chambers, wherein the first The substrate has a first electrode layer on a side facing the chambers, and the second substrate has a second electrode layer on a side facing the chambers, the second electrode layer being located on the substrate; An electro-refractive index adjusting medium is disposed between the first substrate and the second substrate and filled in the chambers. The display device of claim 10, wherein each of the chambers corresponds to one or more sub-pixels. The display device of claim 11, wherein the sub-pixels corresponding to each of the chambers constitute a pixel. The display device of claim 10, wherein the dielectric layer covers the second electrode layer, and the second substrate further comprises an alignment layer covering the dielectric layer. The display device of claim 10, wherein the dielectric layer is between the substrate and the second electrode layer, and the second substrate further comprises an alignment layer covering the second electrode layer. The display device of claim 10, wherein the second electrode layer is a common electrode. The display device of claim 10, wherein the first electrode layer comprises a plurality of control electrodes respectively corresponding to the chambers. The display device of claim 10, wherein the first substrate comprises a plurality of lines coupled to the first electrode layer, and the lines are disposed adjacent to the chambers. The display device of claim 10, wherein the first substrate comprises an alignment layer covering the first electrode layer. The display device of claim 10, wherein the electrorefractive index adjusting medium is a liquid crystal material. The display device of claim 10, wherein the display device The first substrate is located between the second substrate and the display panel, and the first substrate has a plurality of 稜鏡 structures on a surface of the display panel, and each 稜鏡 structure is respectively disposed corresponding to the chambers. The display device of claim 10, wherein the display panel is a liquid crystal display panel. The display device of claim 10, further comprising a backlight module, the display panel being located between the backlight module and the refractive index adjustment panel. A method for manufacturing a refractive index adjusting panel, comprising: providing a first substrate, the first substrate having a first electrode layer; providing a second substrate, the second substrate comprising a black matrix, the second substrate and the second substrate a substrate is disposed in parallel with each other to form a plurality of connected chambers between the first substrate and the second substrate, the black matrix being disposed at an abutment of the chambers, wherein the second substrate is facing the chambers One side has a second electrode layer, and the first substrate has the first electrode layer on a side facing the chambers; a substrate is provided, wherein the second electrode layer is on the substrate; on the substrate Forming a dielectric layer, and forming a plurality of recesses on the dielectric layer to form the chambers after the first substrate and the second substrate are assembled; and in the first substrate and the second substrate An electro-refractive index adjusting medium is formed therebetween, and the electro-refractive index adjusting medium is filled in the chambers. The method for manufacturing a refractive index adjusting panel according to claim 23, wherein the method of forming the recesses comprises: Part of the dielectric layer is removed. The method of fabricating a refractive index adjusting panel according to claim 23, wherein the method of forming the recesses comprises removing a portion of the dielectric layer by laser or excimer laser. The method for fabricating a refractive index adjusting panel according to claim 23, wherein the dielectric layer is a photosensitive material layer, and the method of forming the recesses comprises: coating the photosensitive material layer by a gray scale mask Perform lithography process. The method for fabricating a refractive index adjusting panel according to claim 26, further comprising curing the photosensitive material layer after the lithography process. The method for manufacturing a refractive index adjusting panel according to claim 23, wherein the method of forming the recesses comprises: forming a patterned mask on the dielectric layer; patterning by the patterned mask The dielectric layer is formed to form the recesses in the dielectric layer; and the patterned mask is removed. The method of manufacturing a refractive index adjusting panel according to claim 28, wherein the patterned mask is a photoresist layer. The method for fabricating a refractive index adjusting panel according to claim 23, further comprising: forming an alignment layer on the dielectric layer, wherein the dielectric layer is located between the alignment layer and the second electrode layer. The method for manufacturing a refractive index adjusting panel according to claim 23, further comprising: An alignment layer is formed on the second electrode layer, wherein the alignment layer is between the electro-refractive index adjusting medium and the second electrode layer. The method of manufacturing a refractive index adjusting panel according to claim 23, wherein the second electrode layer is a common electrode. The method of manufacturing a refractive index adjusting panel according to claim 23, wherein the first electrode layer comprises a plurality of control electrodes respectively corresponding to the chambers. The method of manufacturing a refractive index adjusting panel according to claim 23, wherein the first substrate comprises a plurality of wires coupled to the first electrode layer, and the wires are disposed adjacent to the chambers . The method of manufacturing a refractive index adjusting panel according to claim 23, wherein the first substrate comprises an alignment layer covering the first electrode layer. The method of manufacturing a refractive index adjusting panel according to claim 23, wherein the electrorefractive index adjusting medium is a liquid crystal material. The method for manufacturing a refractive index adjusting panel according to claim 23, wherein the first substrate has a plurality of 稜鏡 structures on a surface of the second substrate, and each 稜鏡 structure corresponds to the 分别 structure Some chamber settings.