JP2009282424A - Liquid crystal display, electronic equipment, and polarizing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin liquid crystal display capable of preventing a display face from being not browsed depending on a browsing direction, even when an observer views with polarizing spectacles, and capable of coping with a polarizing sunglass, electronic equipment, and a polarizing body. <P>SOLUTION: This liquid crystal display 2 has a liquid crystal display panel 12 formed by sandwiching a liquid crystal between a pair of substrates having a pixel electrode and a common electrode, and the polarizing bodies 36, 38 arranged respectively in an outside of the liquid crystal display panel 12, the polarizing body 38 arranged in a display face side of the liquid crystal display panel 12 has a polarizer 42, and a pair of protection films 44, 46 for sandwiching the polarizer 42, and the protection film 46 arranged in a display face side of the polarizer 42 has a phase difference value, and emits a linearly polarized light L as the circularly polarized or elliptically polarized light L, toward an outside of the polarizing body 38 arranged in the display face side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device, an electronic apparatus, and a polarizer.

  The liquid crystal display device is mainly composed of a liquid crystal display panel and an illumination device. The light emitted from the illumination device passes through the liquid crystal display panel, and thereby the liquid crystal display panel is illuminated. The liquid crystal display panel has a structure in which liquid crystal is sandwiched between two substrates. A lower polarizer is installed on the outer surface of the liquid crystal display panel on the lighting device side, and an upper polarizer is installed on the outer surface of the liquid crystal display panel on the viewer side. The liquid crystal display panel changes the gradation by inverting the liquid crystal molecules and controlling the orientation thereof.

  In a general liquid crystal display device, assuming that the observer sees the display screen with polarized glasses such as polarized sunglasses, the upper polarizer has an angle of its transmission axis that is the horizontal or vertical direction of the display screen. Is set to 45 °. However, if the angle of the upper polarizer is defined in this way, the inversion direction of the liquid crystal molecules of the liquid crystal display panel needs to be adjusted accordingly, which is often difficult in the manufacturing process.

  FIG. 5A shows a configuration of a liquid crystal display device that does not support polarized sunglasses. The polarizer 90 includes a protective film 90c, a polarizer 90a, and a protective film 90b in this order from the viewer side (upper side in the drawing). A hard coat layer 52 is formed on the viewer side of the polarizer 90. The thickness of the polarizer 90 is, for example, 120 μm. The polarizer 90 is excellent in scratch resistance because of the hard coat layer 52.

  FIGS. 5B and 5C show the configuration of a liquid crystal display device that supports polarized sunglasses. As shown in FIG. 5B, the phase difference film 92 is placed between the polarizer 90 and the observer so that the light emitted from the polarizer 90 is converted from linearly polarized light to circularly polarized light ( For example, see Patent Document 1).

  Further, a retardation film 92 is disposed on the front surface of the polarizer 90 of the liquid crystal display panel 12, the retardation Δn · d of the retardation film 92 is set in the vicinity of 140 nm, 4000 nm, and the like. The angle formed by the axis and the absorption axis of the polarizer 90 is 45 ° (see, for example, Patent Documents 2 and 3).

  Thereby, whatever the angle of the transmission axis of the polarizer 90 is, an observer wearing polarized glasses can see the display image displayed on the display screen. That is, in the liquid crystal display devices described in Patent Documents 1 to 3, it is not necessary to set the angle of the transmission axis of the polarizer 90 and the inversion direction of the liquid crystal molecules of the liquid crystal display panel according to the observer.

  FIG. 5C shows an integrated cover type. A cover 94 is formed on the viewer side of the polarizer 90.

JP 2005-352068 A JP-A-6-258633 JP-A-6-258634

  However, Patent Document 1 achieves polarization sunglasses correspondence by disposing the retardation film 92 on the front surface of the polarizer 90, and Patent Documents 2 and 3 defining the retardation value, but the front surface of the polarizer 90 is achieved. Further, there is a problem that the thickness of the liquid crystal display device is increased by disposing the retardation film 92 on the surface. The retardation film 92 alone is low in hardness and easily damaged. In the case of the cover-integrated type, scratches are difficult to scratch, but the thickness becomes thick because the cover 94 and the retardation film 92 are formed.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  [Application Example 1] A liquid crystal display panel formed by sandwiching a liquid crystal between a pair of substrates having a pixel electrode and a common electrode, and a polarizer disposed on the outside of the liquid crystal display panel, The polarizer disposed on the display surface side of the liquid crystal display panel includes a polarizer and a pair of protective films sandwiching the polarizer, and the protection disposed on the display surface side of the polarizer. The film has a retardation value, and emits linearly polarized light as circularly polarized light or elliptically polarized light outside the polarizer on the display surface side.

  According to this, by arranging a retardation film as a protective film, which is a support substrate disposed on the display surface side of the polarizer disposed on the display surface side of the liquid crystal display panel, it is more compatible with conventional polarized sunglasses. In addition, the present invention provides a liquid crystal display device that is capable of supporting polarized sunglasses that has a thin polarizer structure equivalent to one protective film and does not obscure the display surface depending on the viewing direction even when an observer views with polarized glasses. .

  Application Example 2 In the above liquid crystal display device, the protective film having the retardation value is a λ / 4 retardation film.

  According to this, it becomes easy to emit linearly polarized light as circularly polarized light or elliptically polarized light outside the polarizer on the display surface side.

  Application Example 3 In the above liquid crystal display device, the protective film having the retardation value is a coating retardation film.

  This further reduces the thickness of the liquid crystal display device.

  Application Example 4 The liquid crystal display device as described above, further comprising a hard coat layer disposed on the display surface side of the protective film having the retardation value.

  According to this, the scratch resistance is further improved.

  Application Example 5 Electronic equipment comprising the liquid crystal display device described above.

  According to this, since the above-mentioned liquid crystal display device is mounted, even in the case where the observer looks with polarized glasses, the polarizing direction is thinner by one protective film than that for the conventional polarizing sunglasses. Thus, it is possible to provide an electronic device that can support polarized sunglasses without causing the display surface to become invisible.

  Application Example 6 A polarizer having a polarizer and a pair of protective films sandwiching the polarizer, and at least one of the protective films has a retardation value.

  According to this, a thin polarizer is provided by disposing the retardation film on the protective film which is at least one supporting substrate.

  Application Example 7 The polarizing body, wherein the protective film having the retardation value is a λ / 4 retardation film.

  According to this, it becomes easy to emit linearly polarized light as circularly polarized light or elliptically polarized light.

  Application Example 8 The polarizing body, wherein the protective film having the retardation value is a coating retardation film.

  This further reduces the thickness of the polarizer.

  Hereinafter, embodiments will be described with reference to the drawings. In each drawing used in the following description, the scale of each member is appropriately changed to make each member a recognizable size.

[Configuration of liquid crystal display device]
First, the liquid crystal display device of this embodiment will be described with reference to FIGS.
FIG. 1 is a cross-sectional view of the liquid crystal display device according to the present embodiment. FIG. 2 is a cross-sectional view of the polarizer of the liquid crystal display device according to the present embodiment. As shown in FIG. 1, the liquid crystal display device 2 according to the present embodiment mainly includes a lighting device 10 and a liquid crystal display panel 12. The illumination device 10 is mainly composed of a light guide plate 14 and a light source unit 16. The liquid crystal display panel 12 is disposed to face the upper surface side of the light guide plate 14. The lighting device 10 includes a reflection sheet 18 on the lower surface side of the light guide plate 14.

  The light source part 16 is arrange | positioned at the end surface 14c of the light-guide plate 14, and is provided with several LED20 which is a point light source.

  The light L emitted from each LED 20 enters the light guide plate 14 from the end surface 14 c of the light guide plate 14. In the light guide plate 14, the upper surface functions as an emission surface 14 a that emits light, and the lower surface functions as a reflection surface 14 b that reflects light. The light L changes direction by repeating reflection between the exit surface 14a and the reflection surface 14b of the light guide plate 14, and exits from the exit surface 14a to the outside. The emitted light L travels toward the liquid crystal display panel 12.

  The liquid crystal display panel 12 has a display area substantially the same as the light emission area of the light guide plate 14. The liquid crystal display panel 12 is configured by bonding substrates 22 and 24 such as glass through a sealing material 26 to form a cell structure, and enclosing a liquid crystal 28 therein. On the inner surface of the substrate 22, a pixel electrode 30 is disposed for each subpixel. On the inner surface of the substrate 24, a common electrode 32 is disposed on the entire surface, and a colored layer 34 is disposed for each subpixel. The liquid crystal display panel 12 according to the present embodiment is a TN (Twisted Nematic) type liquid crystal display panel. By applying a voltage between the pixel electrode 30 and the common electrode 32, the liquid crystal molecules of the liquid crystal 28 are changed. Invert and change its orientation.

  A lower polarizing plate (polarizing body) 36 is installed on the outer surface of the substrate 22, and a polarizing body 38 is installed on the outer surface of the substrate 24. As shown in FIG. 2, the lower polarizing plate 36 is bonded to the outer surface of the substrate 22 (see FIG. 1) of the liquid crystal display panel 12 via an adhesive 40. The polarizer 38 is bonded to the outer surface of the substrate 24 (see FIG. 1) of the liquid crystal display panel 12 via an adhesive 40.

  The lower polarizing plate 36 includes a polarizer 36a and a pair of protective films 36b and 36c that sandwich the polarizer 36a.

  The polarizer 38 disposed on the display surface side of the liquid crystal display panel 12 includes a polarizer 42 and a pair of protective films 44 and 46 that sandwich the polarizer 42. A generally used retardation film is disposed instead of the protective film 46 which is a support base on one side of the polarizer 38. The protective film 46 disposed on the display surface side of the polarizer 42 has a phase difference value, and emits linearly polarized light L as circularly polarized light or elliptically polarized light outside the polarizer 38 on the display surface side.

  The thickness of the polarizer 42 is, for example, 20 to 30 μm. The thickness of the protective film 44 is, for example, several tens to 80 μm. The thickness of the retardation film (protective film) 46 is, for example, 30 to 60 μm. As a result, the thickness of the polarizer 38 is comparable to that of the conventional configuration.

  Note that a λ / 4 retardation film may be used as the retardation film 46. This makes it easy to emit linearly polarized light as circularly or elliptically polarized light.

  Further, a coating retardation film may be used as the retardation film 46. When a coating retardation film is used as the retardation film 46, the thickness is further reduced. For example, the thickness is 10 to 20 μm. Thereby, it is possible to make it thinner than the conventional polarizer.

  In the retardation film 46, for example, the retardation Δn · d is set in a range of 120 to 160 nm, and the angle formed by the optical axis of the retardation film 46 and the absorption axis of the polarizer 42 is set at 45 °.

  The retardation film 46 is made of a film that generates a phase difference between an extraordinary ray and an ordinary ray, such as polycarbonate, and is formed into a uniaxially stretched polymer film by thermally stretching a polymer material. The retardation film 46 is an engineering plastic such as polycarbonate, cycloolefin polymer, liquid crystal polymer, and polysulfone. The retardation film 46 can also be made of an inorganic material such as mica, artificial mica, or quartz. A relationship of R = | ne−no | × d = Δn · d is established between the phase delay (retardation) R and the refractive indexes ne and no. Here, d is the thickness of the film material, ne is the refractive index for extraordinary rays, and no is the refractive index for ordinary rays. The adhesive 40 is, for example, acrylic and has a thickness of 20 μm.

  As described above, in the liquid crystal display panel 12 in which the polarizer 38 is disposed on the display surface side, the light L emitted from the polarizer 42 is linearly polarized light that matches the direction of the transmission axis of the polarizer 42. In this embodiment, since the phase difference film 46 is provided, a phase shift occurs between the ordinary ray and the extraordinary ray when passing through the phase difference film 46, and the light changes into circularly polarized light or elliptically polarized light. Therefore, by providing the retardation film 46, the observer 48 watches the polarizing glasses 50 with a polarizing body configuration that is thinner than a conventional protective film for polarizing sunglasses (for example, several tens to 80 μm). Even in this case, it is possible to support polarized sunglasses in which the display surface is not invisible depending on the viewing direction.

A hard coat layer 52 is disposed on the display surface side of the retardation film 46. The hard coat layer 52 may be made of any material as long as it is a transparent material. The hard coat layer 52 is, for example, a resin material having a thickness of about 5 μm. According to this, the scratch resistance is further improved.
The retardation film 46 may be provided with a function to prevent glare by scattering light by dispersing fine particles (silica sphere: several μm) on the surface to prevent glare. By doing so, there is an effect of preventing a decrease in visibility due to external light reflection on the surface of the liquid crystal display panel.
The retardation film 46 may be provided with a function of preventing reflection of light by interference by forming a multilayer film (metal film TiO ₂ (several nm) or the like) on the surface. By doing so, there is an effect of preventing a decrease in visibility due to external light reflection on the surface of the liquid crystal display panel.

  Returning to FIG. 1, for example, a diffusion sheet 54 and a prism sheet 56 are provided as optical sheets between the lighting device 10 and the liquid crystal display panel 12. The diffusion sheet 54 has a role of diffusing the light L emitted from the light guide plate 14 in all directions. The prism sheet 56 has a section in which a plurality of substantially triangular prism shapes are extended in one direction, and has a role of condensing the light L on the liquid crystal display panel 12.

  The light L emitted from the illumination device 10 passes through the diffusion sheet 54 and the prism sheet 56 and then enters the lower polarizing plate 36. The light L is linearly polarized when passing through the lower polarizing plate 36. The linearly polarized light L enters the liquid crystal display panel 12.

  Since the liquid crystal display panel 12 is a TN liquid crystal display panel as described above, it transmits light when no voltage is applied, and blocks light when a voltage is applied. The upper and lower polarizing plates are arranged so that their transmission axes are orthogonal to each other in advance, and the liquid crystal molecules are sandwiched so as to be twisted. Therefore, when no voltage is applied, the light incident along the transmission axis of the lower polarizing plate travels along the twist of the liquid crystal and, when reaching the upper polarizing plate, is in a direction perpendicular to the transmission axis of the lower polarizing plate. It will be ejected (white display). When a voltage is applied, the twist of the liquid crystal is released, and the light incident along the transmission axis of the lower polarizing plate travels straight and reaches the upper polarizing plate in the same direction as the transmission axis of the lower polarizing plate. As it is, it cannot be transmitted through the upper polarizing plate (black display). That is, when a voltage is applied between the pixel electrode 30 and the common electrode 32, the light L that is transmitted through the lower polarizing plate 36 and incident on the liquid crystal display panel 12 passes through the liquid crystal 28 and its polarization direction. Remains unchanged in the same direction as the transmission axis of the lower polarizing plate 36, and is in a direction perpendicular to the transmission axis of the polarizer 42 (see FIG. 2) of the polarizer 38, and therefore cannot pass through the polarizer 42. .

  On the other hand, when no voltage is applied between the pixel electrode 30 and the common electrode 32, the light L incident on the liquid crystal display panel 12 is rotated in the polarization direction by the liquid crystal 28, and then the polarizer. 38 is incident. In this case, since the polarization direction is in the same direction as the transmission axis of the polarizer 42 (see FIG. 2) of the polarizer 38, the polarizer 42 can be transmitted.

  In this embodiment, the observer 48 is wearing polarized glasses 50 such as polarized sunglasses. That is, the polarizing glasses 50 are polarizing plates. Therefore, the liquid crystal display device 2 has another polarizing plate on the side of the polarizer 38 where the light L is emitted, in other words, on the viewer 48 side. Therefore, in the liquid crystal display device 2 according to the present embodiment, the retardation film 46 is provided on the outer surface of the polarizer 42 in the polarizer 38. The retardation film 46 emits linearly polarized light L as circularly polarized light or elliptically polarized light outside the polarizer 38.

  In the above embodiment, an example of a transmissive liquid crystal display device in which the light source unit 16 is disposed behind the liquid crystal display panel 12 has been described. However, a reflector is disposed instead of the light source unit 16 to reflect light from the display surface side. Even in the reflective liquid crystal display device, the reflected light takes the same path as in the transmissive type, and the same result can be obtained.

  The effect of this embodiment can be obtained not only in a positive type liquid crystal display device but also in a negative type liquid crystal display device. Further, the present embodiment is not limited to a liquid crystal display device using TN liquid crystal, and other liquid crystals, for example, a liquid crystal display device using super twist nematic liquid crystal, and the like can be used as the absorption axis of the polarizer of the polarizer on the display surface side. By maintaining the relationship of the retardation film in the optical axis direction, the same effect can be obtained.

(Light polarization direction)
Next, the polarization direction of the light L will be described.
FIG. 3 is a schematic diagram showing the polarization direction of the light L in the liquid crystal display device 2 according to the present embodiment. In FIG. 3, the angle of the transmission axis 36 x of the lower polarizing plate 36 is 90 °, the angle of the transmission axis 42 x of the polarizer 42 of the polarizer 38 is 0 °, and the transmission axis 50 x of the polarizing glasses 50 is Assume that the angle is 90 °. The angle of the transmission axis 50x of the polarized glasses 50 is assumed to be the angle of the transmission axis of general polarized sunglasses. That is, when the polarized glasses 50 are general polarized sunglasses, the transmission axis is provided in a direction perpendicular to the straight line connecting the left and right eyes of the observer 48, and the absorption axis is a direction perpendicular to the transmission axis. That is, it is provided in the direction of a straight line connecting the left and right eyes. This is because, in general polarized sunglasses, it is necessary to block the reflected light having a polarization direction in a direction parallel to the water surface in order to suppress glare caused by reflected light of the sun reflected on the water surface such as the sea or river. Because there is.

  In the liquid crystal display panel 12, it is assumed that no voltage is applied between the pixel electrode 30 and the common electrode 32, and the polarization direction of the light L is rotated by 90 ° by the liquid crystal 28.

  The light L emitted from the illumination device 10 is linearly polarized when passing through the lower polarizing plate 36. Since the angle of the transmission axis 36x is 90 ° with respect to the paper surface horizontal direction Pol, the polarization direction of the light L linearly polarized when passing through the lower polarizing plate 36 is 90 ° with respect to the paper surface horizontal direction Pol. Direction.

  The light L polarized by the lower polarizing plate 36 enters the liquid crystal display panel 12. At this time, the light L has a polarization direction in a direction indicated by a wavy arrow 12 Lin, that is, a direction of 90 ° with respect to the horizontal direction Pol on the paper surface. In the liquid crystal display panel 12, since the polarization direction of the light L is rotated by 90 ° by the liquid crystal 28, the polarization direction of the light L when exiting the liquid crystal display panel 12 is the direction indicated by the wavy arrow 12Lout, that is, the horizontal direction of the drawing. The direction is 0 ° with respect to the direction Pol.

  The direction of the transmission axis 42x of the polarizer 42 and the polarization direction of the light L emitted from the liquid crystal display panel 12 are both 0 ° with respect to the horizontal direction Pol on the paper surface. Therefore, the light L can pass through the polarizer 42.

  The light L transmitted through the polarizer 42 enters the retardation film 46 of the polarizer 38. At this time, the light L has a polarization direction in the direction of the wavy arrow 46Lin, that is, the direction of 0 ° with respect to the horizontal direction Pol on the paper surface. For example, in the retardation film 46 shown in FIG. 3, the direction of the optical axis 46 x is aligned with a direction that forms an angle of 45 ° with respect to the transmission axis 42 x of the polarizer 42. An angle of 45 ° is formed with respect to the polarization direction of L (the direction of the wavy arrow 46 Lin). Therefore, when the light L incident on the retardation film 46 passes through the retardation film 46, a phase shift occurs between the ordinary ray and the extraordinary ray, and the light L changes to circularly polarized light or elliptically polarized light.

  The light L emitted from the phase difference film 46 enters the polarizing glasses 50. In this embodiment, since the phase difference film 46 is provided, a phase shift occurs between the ordinary ray and the extraordinary ray when passing through the phase difference film 46, and the light changes into circularly polarized light or elliptically polarized light. Accordingly, by providing the retardation film 46, a polarizing body configuration that is thinner by one protective film than that for the conventional polarizing sunglasses is used, and even when the observer 48 looks through the polarizing glasses 50, the display is performed depending on the viewing direction. It is possible to support polarized sunglasses that do not obscure the surface.

[Modification]
In the above-described embodiment, the liquid crystal display panel 12 is a TN liquid crystal display panel. However, the liquid crystal display panel 12 is not limited to this, but instead, a VA (Vertical Aligned) liquid crystal display panel or a horizontal electric field method is used. It goes without saying that other liquid crystal display panels such as the above liquid crystal display panel may be used.

  In the above-described embodiment, the polarizing glasses 50 are used. However, the present invention is not limited to this, and it goes without saying that other members having the function of a polarizer may be used instead.

  According to the present embodiment, in the liquid crystal display device 2, the retardation film 46 disposed on the display surface side of the polarizer 38 has a retardation value, and linearly polarized light is present outside the polarizer 38 on the display surface side. Are emitted as circularly polarized light or elliptically polarized light. As a result, the polarized sunglasses with a protective film thinner than that of the conventional polarized sunglasses, and the display surface does not become invisible depending on the viewing direction even when the viewer 48 looks through the polarized glasses 50. Correspondence is possible.

(Electronics)
FIG. 4 is a perspective view illustrating an example of an electronic apparatus according to the present embodiment. A mobile phone 100 shown in FIG. 4 includes the liquid crystal display device 2 of the above-described embodiment as a small-sized display unit 102, and includes a plurality of operation buttons 104, an earpiece 106, and a mouthpiece 108. . Therefore, with a polarizing body configuration that is thinner than that of conventional polarizing sunglasses, even when the viewer 48 looks through the polarizing glasses 50, the display surface does not disappear depending on the viewing direction. Provided is a thin mobile phone 100 that enables the

  The liquid crystal display device 2 according to the embodiment is not limited to the mobile phone 100, but is an electronic book, a personal computer, a digital still camera, a liquid crystal television, a viewfinder type or a monitor direct view type video tape recorder, a car navigation device, a pager. , Electronic notebooks, calculators, word processors, workstations, videophones, POS terminals, devices equipped with touch panels, 3D liquid crystal display devices using field sequential (FS) display, two-screen liquid crystal display devices, light valves for projection televisions, etc. In any electronic device, even when the observer 48 looks through the polarizing glasses 50, it is possible to handle polarized sunglasses that do not obscure the display surface depending on the viewing direction. Thin Providing of electronic equipment.

1 is a cross-sectional view of a liquid crystal display device according to an embodiment. Sectional drawing of the polarizing body of the liquid crystal display device which concerns on this embodiment. The schematic diagram which shows the polarization direction of the light in the liquid crystal display device which concerns on this embodiment. FIG. 11 is a perspective view illustrating an example of an electronic apparatus according to the embodiment. Sectional drawing of the conventional polarizing body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Liquid crystal display device 10 ... Illuminating device 12 ... Liquid crystal display panel 14 ... Light guide plate 14a ... Ejection surface 14b ... Reflection surface 14c ... End surface 16 ... Light source part 18 ... Reflection sheet 20 ... LED 22, 24 ... Board | substrate 26 ... Sealing material 28 ... Liquid crystal 30 ... Pixel electrode 32 ... Common electrode 34 ... Colored layer 36 ... Lower polarizing plate (polarizer) 36a ... Polarizer 36b, 36c ... Protective film 36x ... Transmission axis 38 ... Polarizer 40 ... Adhesive 42 ... Polarizer 42x ... transmission axis 44 ... protective film 46 ... retardation film (protective film) 46x ... optical axis 48 ... observer 50 ... polarizing glasses 50x ... transmission axis 52 ... hard coat layer 54 ... diffusion sheet 56 ... prism sheet 100 ... mobile phone 102 ... Display unit 104 ... Operation buttons 106 ... Earpiece 108 ... Mouthpiece

Claims (8)

A liquid crystal display panel formed by sandwiching a liquid crystal between a pair of substrates having a pixel electrode and a common electrode;
Polarizers respectively disposed on the outside of the liquid crystal display panel;
Have
The polarizer disposed on the display surface side of the liquid crystal display panel is:
A polarizer,
A pair of protective films sandwiching the polarizer;
Have
The protective film disposed on the display surface side of the polarizer has a retardation value,
A liquid crystal display device, characterized in that linearly polarized light is emitted as circularly or elliptically polarized light to the outside of the polarizer on the display surface side. The liquid crystal display device according to claim 1.
The liquid crystal display device, wherein the protective film having the retardation value is a λ / 4 retardation film. The liquid crystal display device according to claim 1 or 2,
The liquid crystal display device, wherein the protective film having the retardation value is a coating retardation film. The liquid crystal display device according to any one of claims 1 to 3,
The liquid crystal display device further comprising a hard coat layer disposed on a display surface side of the protective film having the retardation value.   An electronic apparatus comprising the liquid crystal display device according to claim 1. A polarizer,
A pair of protective films sandwiching the polarizer;
Have
At least one of the protective films has a retardation value. The polarizer according to claim 6,
The polarizer according to claim 1, wherein the protective film having the retardation value is a λ / 4 retardation film. The polarizer according to claim 6 or 7,
The polarizer, wherein the protective film having the retardation value is a coating retardation film.

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