Cover panel and display device

Abstract

To provide a cover panel capable of increasing the design property of a display device, and a display device.SOLUTION: A disclosed cover panel has a first anti-reflection film and a first polarizer. The first polarizer is placed between an optical layer and a liquid crystal panel. The first polarizer polarizes light. The cover panel further has at least a louver layer or a decorative layer between the optical layer and the first polarizer. The louver layer has a repeating array of light-transmitting parts and light-absorbing parts. The light-transmitting parts transmit light. The light-absorbing parts absorb light. A decorative layer has a pattern. The cover panel is placed away from the liquid crystal panel.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a cover panel and a display device. [Background technology]

[0002] A display device having a liquid crystal panel displays an image in a display area when the device is in operation. When the display device is not in operation, no image is displayed in the display area, but external light or its reflected light may be irradiated onto the surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-045842 [Patent Document 2] Patent Publication No. 2021-099426 Summary of the Invention [Problem to be solved by the invention]

[0004] In a display device, it is desirable that the boundary between the display area and the peripheral area of ​​the liquid crystal panel is inconspicuous and that the display device has a high design quality.

[0005] The present disclosure provides a cover panel and a display device that are suitable for enhancing the design of the display device. [Means for solving the problem]

[0006] The cover panel according to the present disclosure comprises: First anti-reflection coating and a first polarizing plate Louver layer, light-shielding frame, and touch panel It has. No. Polarizing plate 1 is First anti-reflection coating The first polarizing plate is disposed between the liquid crystal panel and the first polarizing plate. Louver layer teeth, First anti-reflection coating and between the first polarizer will be distributed.The louver layer has a repeated arrangement of light-transmitting sections and light-absorbing sections. The light-transmitting sections transmit light, and the light-absorbing sections absorb light. The light-shielding frame is disposed between the louver layer and the liquid crystal panel. When viewed from a direction perpendicular to the front surface of the first anti-reflection film, the light-shielding frame overlaps the peripheral portion of the first polarizing plate. The touch panel is disposed between the first polarizing plate and the liquid crystal panel. The light-shielding frame is disposed between the first polarizing plate and the touch panel. The cover panel is disposed at a distance from the liquid crystal panel. [Effects of the Invention]

[0007] According to the cover panel and display device according to the present disclosure, it is possible to provide a cover panel and a display device that are suitable for enhancing the design of the display device. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view showing the external configuration of a display device according to a first embodiment. [Figure 2] 1 is an exploded perspective view showing a schematic configuration of a display device according to a first embodiment. [Figure 3] 1 is a cross-sectional view showing the configuration of a display device according to a first embodiment. [Figure 4] FIG. 3 is an enlarged cross-sectional view showing the configuration of a louver layer in the first embodiment. [Figure 5] FIG. 2 is a diagram showing the reflection characteristics of the display device according to the first embodiment. [Figure 6] FIG. 10 is a cross-sectional view showing the configuration of a display device according to a second embodiment. [Figure 7] FIG. 10 is a cross-sectional view showing the configuration of a display device according to a modified example of the second embodiment. [Figure 8] FIG. 10 is a cross-sectional view showing the configuration of a display device according to a third embodiment. [Figure 9] FIG. 10 is an enlarged cross-sectional view showing the configuration of a louver layer in a third embodiment. [Figure 10] FIG. 10 is a cross-sectional view showing the configuration of a display device according to a fourth embodiment. [Figure 11] FIG. 10 is a cross-sectional view showing the configuration of a display device according to a fifth embodiment. [Figure 12] FIG. 10 is a cross-sectional view showing the configuration of a display device according to a sixth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of a display device according to the present disclosure will be described with reference to the drawings.

[0010] (First embodiment) The display device according to the first embodiment has a liquid crystal panel and can be installed, for example, in a console in front of the driver's seat in a vehicle. When the display device is in operation, an image is displayed in the display area. When the display device is not in operation, no image is displayed in the display area, but external light or its reflected light may be irradiated onto the surface.

[0011] For example, a display device 1 may be configured as shown in Fig. 1 and Fig. 2. Hereinafter, the shorter side direction of the display device 1 is referred to as the Z direction, the longer side direction as the Y direction, and the direction perpendicular to the Z and Y directions as the X direction. Fig. 1 is a YZ plan view showing the external configuration of the display device 1. Fig. 2 is an exploded perspective view showing a schematic configuration of the display device 1. As shown in Fig. 2, since a user 100 observes the display device 1 from the +X side, the +X side is sometimes called the front and the -X side is sometimes called the rear, and the surface of a component on the +X side is sometimes called the front surface and the surface of a component on the -X side is sometimes called the rear surface.

[0012] The display device 1 is required to have an aesthetically pleasing exterior design. To conceal elements, wiring, terminals, and the like and improve the aesthetic design, the peripheral portion 8b of the liquid crystal panel 8 within the display device 1 is covered with a light-shielding frame 6, but the pixel portion 8a of the liquid crystal panel 8 is not covered with the light-shielding frame 6. The reflectance of the display area 1a on the surface 1c of the display device 1 differs from the reflectance of the peripheral area 1b. Therefore, the display device 1 includes a louver layer 5 in which light-transmitting portions 51 and light-absorbing portions 52 are repeatedly arranged within the cover panel 10 in front of the liquid crystal panel 8. This reduces the difference in reflectance between the display area 1a and the peripheral area 1b, making the boundary between the display area 1a and the peripheral area 1b less noticeable when the display device 1 is not in operation. This ensures seamlessness between the display area 1a and the peripheral area 1b on the surface 1c, improving the aesthetic design of the display device 1.

[0013] On the other hand, a bondless structure may be adopted for the display device 1. In the bondless structure, the liquid crystal panel 8 and the cover panel 10 in front of it are spaced apart from each other via an air layer AG. This makes it possible to easily improve the design freedom of the display device 1, and is expected to enable the display device 1 to be made larger and / or have a curved surface.

[0014] For example, if the louver layer 5 is positioned at the rearmost position of the cover panel 10, the louver layer 5 will come into contact with the air layer AG, which may cause unwanted light reflection at the interface between the louver layer 5 and the air layer AG. In this case, unwanted patterns may be visible in the display area 1a on the surface of the display device 1 during operation. The unwanted patterns may be, for example, rainbows or double images. This may detract from the design quality of the display device 1.

[0015] Therefore, in this embodiment, in a display device 1 with a bonding-less structure, one of the two polarizing plates that are usually placed on the liquid crystal panel 8 side is moved to the cover panel 10 side and placed between the louver layer 5 and the air layer AG. This ensures seamlessness between the display area 1a and the peripheral area 1b in the display device 1 with a bonding-less structure, while also suppressing the occurrence of unnecessary patterns in the display area 1a.

[0016] For example, the display device 1 may be configured as shown in FIGS. 1 to 3. FIG. 3 is an XZ cross-sectional view showing the configuration of the display device 1. FIG. 3 illustrates an XZ cross-section taken along line AA in FIG. 1. FIG. 3 schematically illustrates the arrangement of each layer in the structure of the XZ cross-section, and the relationship between the thicknesses of each layer may differ from the illustrated relationship. FIG. 3 illustrates the structure of the XZ cross-section corresponding to a portion of the peripheral region 1b extending in the Y direction, but the concept of this embodiment is similarly applicable to the structure of the XY cross-section corresponding to a portion of the peripheral region 1b extending in the Z direction.

[0017] The display device 1 has a cover panel 10, a liquid crystal panel 8, a backlight unit 9, a case 11, and a frame 12. The cover panel 10 is disposed on the +X side of the liquid crystal panel 8. The liquid crystal panel 8 is disposed on the +X side of the backlight unit 9.

[0018] In the liquid crystal panel 8, a plurality of display pixels are arranged in the Y and Z directions in the pixel section 8a, and a circuit for controlling the plurality of display pixels is arranged in the peripheral section 8b. The display region 1a on the surface 1c of the display device 1 corresponds to the pixel section 8a of the liquid crystal panel 8, and the peripheral region 1b corresponds to the peripheral section 8b of the liquid crystal panel 8.

[0019] The display device 1 has a bondless structure in which the cover panel 10 and the liquid crystal panel 8 are not bonded in plan view. The cover panel 10 is disposed at a distance from the liquid crystal panel 8 on the +X side. An air layer AG is interposed between the cover panel 10 and the liquid crystal panel 8.

[0020] The cover panel 10 and the liquid crystal panel 8 may be held by a case 11 and a frame 12. A portion of the cover panel 10 corresponding to the peripheral region 1b may be held by the case 11 from the -X side. The case 11 extends in the XZ direction or the XY direction outward in the YZ direction relative to the liquid crystal panel 8 and the backlight unit 9. The case 11 extends in the YZ direction on the -X side of the backlight unit 9 and holds the backlight unit 9 from the -X side. The frame 12 is disposed on the inner side of the case 11 in the YZ direction and is coupled to the inner surface of the case 11. The frame 12 extends inward in the YZ direction from the inner surface of the case 11. A portion of the liquid crystal panel 8 corresponding to the peripheral region 1b may be held by the case 11 from the -X side via the frame 12. In other words, the case 11 and the frame 12 function as support members connected to the edges of the cover panel 10 and the liquid crystal panel 8.

[0021] The cover panel 10 has an antireflection film 2, an optical layer 3, a louver layer 5, a light-shielding frame 6, and a polarizing layer 7. In the cover panel 10, the antireflection film 2, the optical layer 3, the louver layer 5, the light-shielding frame 6, and the polarizing layer 7 are stacked in this order from the −X side to the +X side.

[0022] In the cover panel 10, the polarizing layer 7 is interposed between the louver layer 5 and the air layer AG. This makes it possible to prevent unwanted light that enters the louver layer 5 from the outside through the surface 1c of the display device 1 from being reflected at the interface between the louver layer 5 and the polarizing layer 7, thereby preventing unwanted patterns such as rainbows and double images from appearing on the surface 1c of the display device 1.

[0023] The antireflection film 2 is disposed on the +X side of the optical layer 3, and has a substantially rectangular shape that extends in a plate shape mainly in the YZ direction and has a longitudinal direction in the Y direction. The antireflection film 2 covers the front surface 3a of the optical layer 3. This allows the antireflection film 2 to suppress reflection of light incident on the front surface 3a of the optical layer 3, thereby ensuring visibility when an image is displayed on the display device.

[0024] The antireflection film 2 may be a film formed by applying an antireflection optical treatment to the front surface 3a of the optical layer 3, or may be a film formed by laminating a separate antireflection optical film to the front surface of the optical layer 3.

[0025] The anti-reflection optical treatment is a treatment in which a substance to become the anti-reflection film 2 is coated in a predetermined form on the front surface 3a of the optical layer 3. The anti-reflection optical treatment may be, for example, an AF (Anti Fingerprint) treatment, an AG (Anti Glare) treatment, an AR (Anti Reflection) treatment, or an AGAR treatment. The AF treatment is also called AF coating, the AG treatment is also called AG coding, the AR treatment is also called AR coating, and the AGAR treatment is also called AGAR coating.

[0026] The reflection-suppressing optical film may be an AF (Anti Fingerprint) film 21, an AR (Anti Reflection) film 22, or an AG (Anti Glare) film 23, or may be a laminated film of two or more of these films. In Fig. 3, the reflection-suppressing film 2 is illustrated as having a configuration in which an AG film 23, an AR film 22, and an AF film 21 are laminated in this order in the X direction.

[0027] The AF film 21 is made of a material with anti-fingerprint properties, such as fluorocarbon. The AF film 21 prevents fingerprints from being left on the surface of the display device 1 in a form that is visible from the outside. This allows the AF film 21 to improve the visibility of the display device 1.

[0028] The AR film 22 can reduce reflected light by canceling out reflected light with a multilayer film, and can suppress specular reflected light and diffuse reflected light, thereby improving the visibility of the display device 1.

[0029] The AG film 23 can diffuse reflected light using an antiglare layer having a fine uneven structure, making it less noticeable, and can mainly suppress specular reflection, thereby improving the visibility of the display device 1.

[0030] The optical layer 3 is disposed on the opposite side of the liquid crystal panel 8 with respect to the louver layer 5. The optical layer 3 is disposed on the -X side of the antireflection film 2, and on the +X side of the adhesive layer 32 and the louver layer 5. The optical layer 3 extends like a plate in the YZ directions and has a substantially rectangular shape with the Y direction as its longitudinal direction. The optical layer 3 has a base material 31 and an adhesive layer 32. The base material 31 is attached to the front surface of the louver layer 5 via the adhesive layer 32. The base material 31 is translucent. The base material 31 may be formed of inorganic glass containing SiO2, or may be formed of organic glass containing a transparent resin such as PMMA (polymethyl methacrylate resin) or PC (polycarbonate).

[0031] The base material 31 has greater rigidity than the louver layer 5. This allows the base material 31 to support the louver layer 5 flatly via the adhesive layer 32.

[0032] Furthermore, due to its high rigidity, the base material 31 has a smooth and flat front surface. This allows the surface 1c of the display device 1 to be viewed as smooth and flat when not in operation, which can easily improve the texture and quality of the display device 1. Furthermore, the display device 1 can suppress image distortion when displaying an image, which can improve the display quality of the display device 1.

[0033] The adhesive layer 32 is sandwiched between the base material 31 and the louver layer 5. The adhesive layer 32 is disposed on the -X side of the base material 31 and on the +X side of the louver layer 5. The adhesive layer 32 extends like a plate in the YZ directions and has a substantially rectangular shape with the Y direction as its longitudinal direction. The adhesive layer 32 has a front surface in contact with the optical layer 3 and a back surface in contact with the louver layer 5. The adhesive layer 32 contains a translucent adhesive and adheres the optical layer 3 to the louver layer 5. The translucent adhesive may be an optical glue such as OCR (Optical Clear Resin) or OCA (Optical Clear Adhesive).

[0034] The louver layer 5 is disposed between the anti-reflection film 2 and the polarizing plate 72 of the polarizing layer 7. The louver layer 5 is disposed on the opposite side of the light-shielding frame 6 from the liquid crystal panel 8. The louver layer 5 is disposed on the -X side of the anti-reflection film 2 and the optical layer 3, and on the +X side of the light-shielding frame 6, the polarizing layer 7, and the liquid crystal panel 8. The louver layer 5 extends in a plate-like shape in the YZ directions, and has a substantially rectangular shape with the Y direction as the longitudinal direction. In the louver layer 5, light-transmitting portions 51 and light-absorbing portions 52 are alternately and repeatedly arranged along the Z direction.

[0035] The louver layer 5 has a plurality of light-transmitting portions 51, a plurality of light-absorbing portions 52, and a substrate 53. The plurality of light-transmitting portions 51 are arranged on the -X side of the substrate 53. The plurality of light-absorbing portions 52 are arranged on the -X side of the substrate 53. As shown in FIG. 2 , each light-transmitting portion 51 extends along the Y direction. The plurality of light-transmitting portions 51 are arranged in the Z direction. The light-transmitting portions 51 are periodically arranged at a predetermined Z-direction arrangement pitch P1. Each light-absorbing portion 52 extends along the Y direction. The plurality of light-absorbing portions 52 are arranged in the Z direction. The plurality of light-absorbing portions 52 may be periodically arranged at a predetermined Z-direction arrangement pitch P1. Each light-absorbing portion 52 may have any light absorption rate depending on its required function. When each light-absorbing portion 52 has an absorption rate close to 100%, it can function as a light-blocking portion. As a result, when the louver layer 5 is not in operation, it can block external light such as sunlight that is obliquely incident from the -X side to the +Z side. Furthermore, when an image is displayed, the louver layer 5 can block external light such as sunlight that is obliquely incident from the -X side to the +Z side while transmitting light from the liquid crystal panel 8 in the +X direction.

[0036] For example, each light transmitting portion 51 may extend in the Y direction, and each light absorbing portion 52 may extend in the Y direction.

[0037] Alternatively, as a countermeasure against moiré, each light-absorbing section 52 may extend in a direction inclined at a predetermined bias angle θ with respect to the Y direction, as shown in FIG. 2. FIG. 2 illustrates a configuration in which each light-absorbing section 52 extends in a direction inclined at a predetermined bias angle θ with respect to the Y direction. The bias angle θ may be determined in advance based on the Z-direction array pitch P1 of the light-absorbing sections 52 and the Z-direction array pitch P1' of the display pixels in the liquid crystal panel 8. The bias angle θ may be an angle greater than 0° and less than 10°. If the Z-direction array pitch P1 of the light-absorbing sections 52 is smaller than the Z-direction array pitch P1' of the display pixels, the bias angle θ may be determined to a value close to 0°. If the Z-direction array pitch P1 of the light-absorbing sections 52 is equal to the Z-direction array pitch P1' of the display pixels, the bias angle θ may be determined to a value close to 10°.

[0038] As shown in FIG. 4, the light-transmitting portions 51 are portions between a plurality of light-absorbing portions 52 in a shape-imparting layer 54 extending in a plate-like shape in the YZ direction. FIG. 4 is an enlarged cross-sectional view showing the configuration of the louver layer 5, and is an enlarged cross-sectional view of portion C in FIG. 3. The shape-imparting layer 54 may be formed of a light-transmitting resin such as highly transparent silicone rubber. The light-absorbing portions 52 may be formed of black silicone rubber, or as shown in FIG. 4, may be formed by incorporating light-absorbing particles 52a into a binder resin 52b. The light-absorbing particles 52a may be acrylic beads containing carbon black. The binder resin 52b may be a light-transmitting resin such as PMMA.

[0039] The XZ cross-sectional shape of the light-absorbing unit 52 is suitable for low-cost formation and may take any shape suited to its function. From the viewpoint of cost reduction, the Z-direction dimension W2 on the +X side of the light-absorbing unit 52 is smaller than the Z-direction dimension W1 on the -X side in the XZ cross-sectional view. The YZ cross-sectional area of ​​the +X side surface 522 of the light-absorbing unit 52 is smaller than the YZ cross-sectional area of ​​the -X side surface 521 of the light-absorbing unit 52. In FIG. 4, the XZ cross-sectional shape of the light-absorbing unit 52 is exemplified as a substantially trapezoidal shape having two parallel sides along the Z direction. The XZ cross-sectional shape of the light-absorbing unit 52 may also be a substantially triangular shape having a base along the Z direction.

[0040] Since the Z-direction dimension W2 on the +X side of the light-absorbing section 52 is smaller than the Z-direction dimension W1 on the -X side in the XZ cross section, light for image display can be efficiently transmitted from the liquid crystal panel 8 to the surface 1c via the louver layer 5. This allows the display device 1 to easily ensure a viewing angle for the image displayed on the surface 1c during operation.

[0041] The Z-direction arrangement pitch P1 of the light-absorbing sections 52 can take any value suitable for the function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the Z-direction arrangement pitch P1 of the light-absorbing sections 52 is preferably 20 μm or more and 100 μm or less, and more preferably 30 μm or more and 100 μm or less.

[0042] From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, it is preferable that the Z-direction dimension W1 on the +X side of the light-absorbing section 52 be equal to or less than half the Z-direction array pitch P1. It is preferable that the Z-direction dimension W2 on the -X side of the light-absorbing section 52 be equal to or less than half the Z-direction dimension W1 on the +X side.

[0043] The X-direction height H1 of the light-absorbing portion 52 can take any value suitable for its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the X-direction height H1 of the light-absorbing portion 52 is preferably 50 μm or more and 150 μm or less, and more preferably 60 μm or more and 150 μm or less.

[0044] The inclination angle α of the side surface on the -Z side of the light absorbing section 52 can take any value suited to its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the inclination angle α, as the inclination angle from the X direction to the -Z side, is preferably greater than 0° and equal to or less than 10°.

[0045] The inclination angle β of the side surface on the +Z side of the light-absorbing section 52 can take any value suited to its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the inclination angle β, as the inclination angle from the X direction to the +Z side, is preferably greater than 0° and equal to or less than 10°.

[0046] 3 has a substantially rectangular shape that extends like a plate in the YZ direction and has a longitudinal direction in the Y direction. The base material 53 can be made of a light-transmitting material such as polyethylene terephthalate (PET), triacetyl cellulose (TAC), acrylic resin, polycarbonate (PC), etc. The base material 53 can support the louver layer 5.

[0047] The light-shielding frame 6 is disposed between the louver layer 5 and the liquid crystal panel 8. The light-shielding frame 6 is disposed on the -X side of the louver layer 5 and on the +X side of the polarizing layer 7 and the liquid crystal panel 8. The light-shielding frame 6 has a substantially rectangular outer contour with the Y direction as its longitudinal direction. The light-shielding frame 6 has openings 6a corresponding to the pixel portions 8a of the liquid crystal panel 8. When viewed from the X direction, the light-shielding frame 6 overlaps the peripheral portion of the polarizing plate 72 of the polarizing layer 7. The light-shielding frame 6 covers the peripheral portion 8b of the liquid crystal panel 8 via the polarizing layer 7 and an air layer AG. This makes it possible to shield elements, wiring, terminals, etc. disposed in the peripheral portion 8b of the liquid crystal panel 8, thereby improving the appearance of the display device 1.

[0048] The color of the light-shielding frame 6 corresponds to the color of the pixel portion 8a. If the pixel portion 8a is black, the light-shielding frame 6 may be a black print formed by applying a resin containing a black pigment to the back surface of the louver layer 5, or a frame-shaped sheet of resin containing a black pigment may be attached to the back surface of the louver layer 5.

[0049] The reflective characteristics of the light-shielding frame 6 correspond to the reflective characteristics of the pixel section 8a of the liquid crystal panel 8. If the pixel section 8a has a color that easily diffuses reflection, the light-shielding frame 6 has a color that easily diffuses reflection. If the pixel section 8a has a color that does not easily diffuse reflection, the light-shielding frame 6 has a color that does not easily diffuse reflection. If the pixel section 8a is glossy black, the light-shielding frame 6 has a glossy black color. If the pixel section 8a is matte black, the light-shielding frame 6 has a matte black color. The following mainly illustrates the case where the light-shielding frame 6 is glossy black.

[0050] The polarizing layer 7 is disposed between the louver layer 5 and the light-shielding frame 6 and the liquid crystal panel 8. The polarizing layer 7 is disposed on the -X side of the louver layer 5 and the light-shielding frame 6 and on the +X side of the liquid crystal panel 8. The polarizing layer 7 extends like a plate in the YZ directions and has a substantially rectangular shape with the Y direction as its longitudinal direction. The front surface of the polarizing layer 7 contacts the louver layer 5 and the light-shielding frame 6, and the back surface is separated from the liquid crystal panel 8 in the -X direction via an air layer AG. The polarizing layer 7 polarizes light.

[0051] The polarizing layer 7 has an adhesive layer 71, a polarizing plate 72, and an anti-reflection film 73. The adhesive layer 71 contains a light-transmitting adhesive and adheres the louver layer 5 and the light-shielding frame 6 to the polarizing plate 72. The light-transmitting adhesive may be an optical glue such as OCR or OCA.

[0052] The polarizing plate 72 is disposed between the anti-reflection film 2 and the liquid crystal panel 8. The polarizing plate 72 is sandwiched between the adhesive layer 71 and the anti-reflection film 73. The polarizing plate 72 polarizes light. The polarizing plate 72 performs part of the image display function of the liquid crystal panel 8 and also functions as a filter to attenuate unwanted light. The polarizing plate 72 functions as a polarizing plate in front of the liquid crystal layer 83 of the liquid crystal panel 8 and functions as a filter for unwanted light. The polarizing plate 72 passes light with a proper polarization state and attenuates light with an improper polarization state. The light with a proper polarization state includes light for image display that may be incident from the liquid crystal panel 8. The light with an improper polarization state includes unwanted light that enters from the outside through the louver layer 5. This allows the polarizing layer 7 to pass light for image display when it is incident from the liquid crystal panel 8. The polarizing layer 7 can attenuate unwanted light when it is incident from the louver layer 5.

[0053] The antireflection film 73 is disposed between the polarizing plate 72 and the air layer AG. The antireflection film 73 is disposed on the back surface of the polarizing layer 7. The antireflection film 73 suppresses reflection of light at the back surface of the polarizing layer 7. The antireflection film 73 suppresses reflection, at the back surface of the polarizing layer 7, of light for image display that is incident from the liquid crystal panel 8 through the air layer AG, and allows the light for image display to pass through. The antireflection film 73 suppresses reflection, at the back surface of the polarizing layer 7, of unwanted light that is incident from the outside through the louver layer 5 and the polarizing plate 72, and attenuates the unwanted light.

[0054] The anti-reflection film 73 may be a film formed by laminating a separate anti-reflection optical film to the back surface of the polarizing plate 72, or may be a film formed by applying anti-reflection optical treatment to the back surface of the polarizing plate 72.

[0055] The anti-reflection optical treatment is a process in which a substance to become the anti-reflection film 73 is coated in a predetermined form on the back surface of the polarizing plate 72. The anti-reflection optical treatment may be, for example, an AG treatment, an AR treatment, or an AGAR treatment. The AG treatment is also called AG coating, the AR treatment is also called AR coating, and the AGAR treatment is also called AGAR coating.

[0056] The reflection-reducing optical film may be an AR film, an AG film, or a laminated film of two or more of these films.

[0057] The AR film can reduce reflected light by canceling out reflected light with a multilayer film, thereby suppressing specular and diffuse reflected light, thereby suppressing the reflection of unwanted light at the interface between the rear surface of the polarizing plate 72 and the air layer AG.

[0058] The AG film can diffuse reflected light using an antiglare layer with a fine uneven structure, making it less noticeable, and can mainly suppress specular reflection, thereby suppressing unwanted light reflection at the interface between the back surface of the polarizing plate 72 and the air layer AG.

[0059] The liquid crystal panel 8 is arranged on the -X side of the louver layer 5, the light-shielding frame 6, and the polarizing layer 7, and is arranged on the +X side of the backlight unit 9. It extends like a plate in the YZ directions and has a substantially rectangular shape with the Y direction as its longitudinal direction. The liquid crystal panel 8 has a pixel section 8a and a peripheral section 8b. The pixel section 8a is a section where a plurality of display pixels are arranged in the YZ directions, and is a section of the liquid crystal panel 8 that is not covered by the light-shielding frame 6. The peripheral section 8b is a section arranged around the pixel section 8a, and is a section of the liquid crystal panel 8 that is covered by the light-shielding frame 6.

[0060] Liquid crystal panel 8 has a liquid crystal layer 83, does not have a polarizer on the +X side, and has polarizer 86 on the -X side. Liquid crystal layer 83 can achieve its display function by using polarizer 72 in cover panel 10 as the front polarizer and polarizer 86 as the rear polarizer.

[0061] The liquid crystal panel 8 further includes an antireflection film 81, an adhesive layer 82, an adhesive layer 84, and a retardation film 85. The antireflection film 81, the adhesive layer 82, the liquid crystal layer 83, the adhesive layer 84, the retardation film 85, and the polarizing film 86 are laminated in this order from the +X side to the -X side. The antireflection film 81, the adhesive layer 82, the liquid crystal layer 83, the adhesive layer 84, the retardation film 85, and the polarizing film 86 each have a substantially rectangular shape with the Y direction as the longitudinal direction.

[0062] The antireflection film 81 may be an AR film, an AG film, or a laminated film of two or more of these films.

[0063] The adhesive layer 82 includes a light-transmitting adhesive and adheres the liquid crystal layer 83 to the anti-reflection film 81. The light-transmitting adhesive may be an optical glue such as OCR or OCA.

[0064] In the pixel section 8a, the liquid crystal layer 83 is formed by sealing a liquid crystal material between a pair of transparent substrates spaced apart in the X direction and extending in the Y and Z directions, with display pixels being formed at the intersections of the pair of transparent substrates. In the pixel section 8a, the liquid crystal layer 83 has a plurality of display pixels arranged in the Y and Z directions. In the peripheral section 8b, the liquid crystal layer 83 has the ends of the pair of transparent substrates arranged therein, a member for sealing the liquid crystal material arranged therein, and a peripheral circuit arranged therein. The peripheral circuit is a circuit for controlling the plurality of display pixels, and includes elements, wiring, terminals, etc. Each of the pair of transparent substrates may be formed from a transparent conductive material such as ITO.

[0065] The adhesive layer 84 includes a light-transmitting adhesive and adheres the liquid crystal layer 83 to the retarder 85. The light-transmitting adhesive may be an optical glue such as OCR or OCA.

[0066] The backlight unit 9 is disposed on the −X side of the liquid crystal panel 8, extends in a plate-like manner in the YZ directions, and has a generally rectangular shape with the Y direction as its longitudinal direction. The backlight unit 9 illuminates the liquid crystal panel 8 from the −X side.

[0067] The backlight unit 9 has a case 91, a DBEF (Dual Brightness Enhancement Film) layer 92, a prism sheet 93, a diffusion sheet / light guide plate 94, and a reflection sheet 95. The case 91 has a box-like shape with the +X side open. The DBEF layer 92, prism sheet 93, diffusion sheet / light guide plate 94, and reflection sheet 95 are housed in the case 91 and are layered in this order from the +X side to the -X side inside the case 91. The DBEF layer 92, prism sheet 93, diffusion sheet / light guide plate 94, and reflection sheet 95 each have a substantially rectangular shape with the Y direction as the longitudinal direction.

[0068] In the display device 1, a louver layer 5 in which light-transmitting portions 51 and light-absorbing portions 52 are repeatedly arranged is disposed on the +X side of the liquid crystal panel 8 and the light-shielding frame 6. This makes it possible to bring the reflective characteristics of the display area 1a and the peripheral area 1b closer to each other. The peripheral area 1b is the area on the +X side of the peripheral area 8b. The display area 1a is the area on the +X side of the pixel area 8a. As a result, when the surface 1c of the display device 1 is observed from the +X side, the boundary between the pixel area 8a and the peripheral area 8b of the liquid crystal panel 8 is made inconspicuous and seamless.

[0069] For example, when the reflectance of the display area 1a of the display device 1 is Y, as shown in FIG. 5, when measured by the SCI method, Y≦2 Formula 1 Meet the following.

[0070] The display device 1 also calculates the color difference between the display area 1a and the peripheral area 1b as ΔE * ab When measuring with the SCI method, as shown in Figure 5, ΔE * ab ≦5 Formula 2 When the above conditions are met and measured using the SCE method, ΔE * ab ≦0.4 Formula 3 The color difference ΔE between the display area 1a and the surrounding area 1b is satisfied. * abcan be used as an index showing the degree to which the display area 1a and the peripheral area 1b are observed seamlessly.

[0071] The SCI method is a measurement method that complies with JIS Z8722 and is a method for measuring reflection characteristics including specular reflection light. In measurements using the SCI method, an integrating sphere without a light trap is placed above the display device 1, and a light source and a light receiver are attached to the integrating sphere to measure the characteristics of reflected light including specular reflection light.

[0072] The SCE method is a measurement method that complies with JIS Z8722 and is a method for measuring reflection characteristics excluding specular reflection. In measurements using the SCE method, an integrating sphere with a light trap is placed above the display device 1, a light source and a light receiver are attached to the integrating sphere, and the specular reflection light is removed by the light trap to measure the characteristics of the reflected light.

[0073] The reflectance Y of the display area 1a using the SCI method can be measured using an integrating sphere without a light trap and a spectrophotometer as a light receiver. When the reflected luminance I0 of a white calibration plate (a white perfect diffuser plate) is defined as 100, the reflectance Y [%] of the display area 1a can be calculated using the following equation 4, provided that the received light intensity obtained by measuring the display area 1a with a spectrophotometer is I1. Y = (I1 / I0) × 100 Equation 4

[0074] Color difference ΔE between display area 1a and surrounding area 1b using the SCI method * ab can be measured using an integrating sphere without a light trap and a colorimeter as a receiver. * a * b * Lightness L in the color system * , redness a * , yellowness b * The measurement result (L * ,a * ,b * ) is L * a * b *This shows the color coordinates of the object to be measured in the color system. The color difference between two objects to be measured is a numerical representation of the difference in color, and can be calculated as the Euclidean distance between the two color coordinates measured with a colorimeter. In other words, the color difference ΔE * ab is the measurement result of the display area 1a by the colorimeter (L1 * ,a1 * ,b1 * ), and the measurement result of the surrounding area 1b by the colorimeter is (L2 * ,a2 * ,b2 * ), it can be calculated by the following Equation 5. ΔE * ab =[√{(L1 * -L2 * ) 2 +(a1 * -a2 * ) 2 +(b1 * -b2 * ) 2}]···Formula 5

[0075] Color difference ΔE between display area 1a and surrounding area 1b in the SCE system * ab The color difference ΔE can be measured using an integrating sphere with a light trap and a colorimeter as the receiver. * ab The measurement result of the display area 1a by the colorimeter is (L3 * ,a3 * ,b3 * ), and the measurement result of the surrounding area 1b by the colorimeter is (L4 * ,a4 * ,b4 * ), it can be obtained by the following Equation 6. ΔE * ab =[√{(L3 * -L4 * ) 2 +(a3 * -a4 * ) 2 +(b3 * -b4 * ) 2}]···Formula 6

[0076] The display device 1 can be configured to satisfy Formulas 1 to 3 by adjusting the Z-direction arrangement pitch P1 of the light-absorbing portions 52 in the louver layer 5, the reflection characteristics of the light-shielding frame 6, etc. For example, the display device 1 can be configured such that the reflectance Y according to the SCI method is 1.7, and the color difference ΔE according to the SCI method is 1.7 as an index of the degree of seamlessness. * ab =1.4, ΔE by SCE method * ab =0.2. By configuring the display device 1 to satisfy Formulas 1 to 3, the boundary between the pixel portion 8a and the peripheral portion 8b of the liquid crystal panel 8 can be made inconspicuous and seamless when observed from the surface 1c. That is, by providing the louver layer 5 in front of the liquid crystal panel 8 and the light-shielding frame 6 in the display device 1, seamlessness between the display area 1a and the peripheral area 1b on the surface 1c can be ensured.

[0077] As described above, in the first embodiment, the display device 1 employs a bondless structure in which the cover panel 10 and the liquid crystal panel 8 are spaced apart in the X direction with an air layer AG interposed between them. The polarizer 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is disposed between the louver layer 5 and the air layer AG. This makes it possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 1 while suppressing the occurrence of unwanted patterns in the display area 1a. This makes it possible to easily increase the design freedom of the display device 1 and improve the aesthetic appeal of the display device 1's appearance.

[0078] The antireflection film 2 may include a moth-eye film (not shown). The antireflection film 2 may be an AF film 21, an AR film 22, an AG film 23, a moth-eye film, or a laminate film of two or more of these films.

[0079] The moth-eye film has many nano-level minute protrusions arranged at regular intervals. Due to its structure, the moth-eye film allows incident light to pass through with almost no reflection. This allows the moth-eye film to improve the visibility of the display device 1.

[0080] (Second embodiment) Next, a display device 101 according to a second embodiment will be described. The following description will focus on the differences from the first embodiment.

[0081] In the first embodiment, a configuration is exemplified in which the light-shielding frame 6 is arranged between the louver layer 5 and the polarizing layer 7, but the light-shielding frame 6 may also be arranged in other positions that can ensure seamlessness between the display area 1a and the peripheral area 1b.

[0082] In the second embodiment, as shown in FIG. 6, a configuration is illustrated in which a light-shielding frame 6 is disposed between a polarizing plate 72 and an anti-reflection film 73. FIG. 6 is an XZ cross-sectional view showing the configuration of a display device 101 according to the second embodiment. FIG. 6 schematically shows the arrangement of each layer in the XZ cross-sectional structure, and the relationship between the thicknesses of each layer may differ from the relationship shown in the figure. FIG. 6 illustrates the structure of the XZ cross-section corresponding to the portion of the peripheral region 1b extending in the Y direction, but the concept of this embodiment is similarly applicable to the structure of the XY cross-section corresponding to the portion of the peripheral region 1b extending in the Z direction.

[0083] Compared to the display device 1 shown in FIG. 3, the display device 101 shown in FIG. 6 has a cover panel 110 instead of the cover panel 10. The cover panel 110 has a polarizing layer 107 instead of the polarizing layer 7. The polarizing layer 107 further has an adhesive layer 174 between the polarizing plate 72 and the anti-reflection film 73. The light-shielding frame 6 is disposed between the polarizing plate 72 and the liquid crystal panel 8. The light-shielding frame 6 is disposed between the polarizing plate 72 and the anti-reflection film 73. The adhesive layer 174 may contain a light-transmitting adhesive and may adhere the anti-reflection film 73 to the back surface of the polarizing plate 72. The light-transmitting adhesive may be an optical glue such as OCR or OCA.

[0084] As in the first embodiment, the display device 101 has a louver layer 5 provided in front of the liquid crystal panel 8 and the light-shielding frame 6. This ensures seamlessness between the display area 1a and the peripheral area 1b on the surface 1c of the display device 101.

[0085] In such a display device 101, the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is also disposed between the louver layer 5 and the air layer AG. This makes it possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 101 while suppressing the occurrence of unwanted patterns in the display area 1a. This makes it possible to easily increase the design freedom of the display device 101 and improve the aesthetic appeal of the appearance of the display device 101.

[0086] The adhesive layer 174 may contain a material that adjusts light transmittance. The material that adjusts light transmittance may be, for example, any material that attenuates light transmittance. The material that adjusts light transmittance may be a material containing a translucent resin, or a material in which light-absorbing particles are dispersed in a binder resin at a relatively low density. The material that adjusts light transmittance may be a smoke material such as a smoke pigment. By including the material that adjusts light transmittance, the adhesive layer 174 can attenuate light transmittance to, for example, 5 to 85%.

[0087] In the display device 101, the adhesive layer 174 contains a material that adjusts the light transmittance, so that the reflective characteristics of the display area 1a and the reflective characteristics of the peripheral area 1b can be made closer to each other. As a result, when the surface 1c of the display device 101 is observed from the +X side, the boundary between the pixel area 8a and the peripheral area 8b of the liquid crystal panel 8 becomes less noticeable and more seamless.

[0088] Furthermore, since the adhesive layer 174 contains a material that adjusts the light transmittance, unwanted light that enters the polarizing plate 72 from the outside through the surface 1c of the display device 101 and the louver layer 5 can be further prevented from being reflected at the interface between the polarizing plate 72 and the air layer AG, thereby further preventing unwanted patterns such as rainbows and double images from occurring in the display area 1a of the display device 101.

[0089] The antireflection film 73 may also include a moth-eye film (not shown). The antireflection film 73 may be an AR film, an AG film, a moth-eye film, or a laminated film of two or more of these films.

[0090] The moth-eye film has many nano-level microscopic protrusions arranged at regular intervals, and this structure allows incoming light to pass through with almost no reflection, mainly suppressing specular reflection, thereby suppressing unwanted light reflection at the interface between the rear surface of the polarizing plate 72 and the air layer AG.

[0091] The antireflection film 81 may also include a moth-eye film (not shown). The antireflection film 81 may be an AR film, an AG film, a moth-eye film, or a laminated film of two or more of these films.

[0092] The moth-eye film has many nano-level minute protrusions arranged at regular intervals, and this structure allows incoming light to pass through with almost no reflection, mainly suppressing specular reflection. This makes it possible to suppress the reflection of unwanted light at the interface between the air layer AG and the front surface of the liquid crystal layer 83.

[0093] Furthermore, by adopting a bondless structure, the display device 201 may have a curved cover panel 210, as shown in Fig. 7. Fig. 7 is a cross-sectional view showing the configuration of a display device 201 according to a modified example of the second embodiment. Fig. 7 illustrates an XZ cross section corresponding to cutting Fig. 1 along line BB.

[0094] The cover panel 210 has a curved surface. The front and back surfaces of the cover panel 210 are each curved. The front and back surfaces of the cover panel 210 may each have a curved surface that is convex toward the -X side, or may each have a curved surface that is convex toward the +X side. Figure 7 illustrates a configuration in which the front and back surfaces of the cover panel 210 each have a curved surface that is convex toward the -X side.

[0095] Although a bondless structure is formed in which the cover panel 210 and the liquid crystal panel 8 are not bonded in plan view, the cover panel 210 and the liquid crystal panel 8 can be held by a case 11 and a frame 12. The case 11 has a box-like shape with an open +X side, and houses the liquid crystal panel 8 and the backlight unit 9 inside. A portion of the liquid crystal panel 8 corresponding to the peripheral region 1b is fixed to the case 11 via the frame 12. An end of the case 11 on the +X side is bonded to a portion of the cover panel 210 corresponding to the peripheral region 1b. This allows the cover panel 210 and the liquid crystal panel 8 to be stably held even if the cover panel 210 is curved.

[0096] In the cover panel 210, the optical layer 203 has a curved surface. The front and back surfaces of the optical layer 203 are each curved. The louver layer 205 is disposed on the back side of the optical layer 203 and has a curved surface that follows the back surface of the optical layer 203. The front and back surfaces of the louver layer 205 are each curved. The polarizing plate 272 is disposed on the back side of the louver layer 205 and has a curved surface that follows the back surface of the louver layer 205. The front and back surfaces of the polarizing plate 272 are each curved. The light-shielding frame 206 is disposed on the back side of the polarizing plate 272 at a YZ position corresponding to the peripheral region 1b and has a curved surface that follows the back surface of the polarizing plate 272. The front and back surfaces of the light-shielding frame 206 are each curved. The anti-reflection film 273 is disposed on the back side of the polarizing plate 272 and the back side of the light-shielding frame 206 and has a curved surface that follows the back surface of the polarizing plate 272 and the back surface of the light-shielding frame 206. The antireflection film 273 has curved front and back surfaces.

[0097] The optical layer 203, the louver layer 205, the polarizing plate 272, the light-shielding frame 206, and the antireflection film 273 may each have a curved surface that is convex toward the −X side or a curved surface that is convex toward the +X side. Fig. 7 illustrates a configuration in which the optical layer 203, the louver layer 205, the polarizing plate 272, the light-shielding frame 206, and the antireflection film 273 each have a curved surface that is convex toward the −X side.

[0098] On the other hand, the liquid crystal panel 8 and the backlight unit 9 each extend flatly in the YZ directions. Between the cover panel 210 and the liquid crystal panel 8, an air layer AG is interposed.

[0099] In such a display device 201, the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is also disposed between the louver layer 205 and the air layer AG. This makes it possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 201 while suppressing the occurrence of unwanted patterns in the display area 1a. This makes it possible to easily increase the design freedom of the display device 201 and improve the aesthetic appeal of the appearance of the display device 201.

[0100] Furthermore, in the display device 201, the cover panel 210 has a curved surface. That is, the optical layer 203, the louver layer 205, the polarizing plate 272, the light-shielding frame 206, and the anti-reflection film 273 each have a curved surface. This allows the display device 201 to be configured with a curved surface that matches the curved surface of the installation location, such as the interior of a vehicle, and improves the design of the appearance of the display device 201.

[0101] (Third embodiment) Next, a display device 301 according to the third embodiment will be described. The following description will focus on the differences from the first and second embodiments.

[0102] In the first and second embodiments, a configuration is illustrated in which the light-absorbing portions 52 in the louver layer 5 are arranged in a direction that tapers from the -X side to the +X side. However, in the third embodiment, as shown in FIG. 8, a configuration is illustrated in which the light-absorbing portions 52 in the louver layer 305 are arranged in the opposite direction in the X direction. FIG. 8 is an XZ cross-sectional view showing the configuration of a display device 301 according to the third embodiment. FIG. 8 schematically shows the arrangement of each layer in the XZ cross-sectional structure, and the relationship between the thicknesses of each layer may differ from the illustrated relationship. While FIG. 8 illustrates the structure of the XZ cross-section corresponding to the portion of the peripheral region 1b extending in the Y direction, the concept of this embodiment is similarly applicable to the structure of the XY cross-section corresponding to the portion of the peripheral region 1b extending in the Z direction.

[0103] Compared to the display device 101 shown in FIG. 6, the display device 301 shown in FIG. 8 has a cover panel 310 instead of the cover panel 110. The cover panel 310 has a louver layer 305 instead of the louver layer 5. In the louver layer 305, a plurality of light-transmitting portions 51 are arranged on the +X side of the base material 53. A plurality of light-absorbing portions 52 are arranged on the +X side of the base material 53. Compared to the light-absorbing portions 52 shown in FIG. 6, the light-absorbing portions 52 shown in FIG. 8 are arranged in a direction that tapers from the +X side toward the -X side, as shown in FIG. 9. FIG. 9 is an enlarged cross-sectional view showing the configuration of the louver layer 305, and is an enlarged cross-sectional view of portion D in FIG. 8.

[0104] The XZ cross-sectional shape of the light-absorbing unit 52 is suitable for low-cost formation and may take any shape suited to its function. From the viewpoint of cost reduction, the Z-direction dimension W11 of the light-absorbing unit 52 on the +X side is larger than the Z-direction dimension W12 on the -X side in the XZ cross-sectional view. The YZ cross-sectional area of ​​the +X side surface 5211 of the light-absorbing unit 52 is larger than the YZ cross-sectional area of ​​the -X side surface 5212 of the light-absorbing unit 52. In FIG. 9, the XZ cross-sectional shape of the light-absorbing unit 52 is exemplified as a substantially trapezoidal shape having two parallel sides along the Z direction. The XZ cross-sectional shape of the light-absorbing unit 52 may also be a substantially triangular shape having a base along the Z direction.

[0105] The light absorbing section 52 has a Z-direction dimension W11 on the +X side larger than a Z-direction dimension W12 on the -X side in an XZ cross-sectional view, which makes it possible to efficiently attenuate unwanted light incident from the outside onto the louver layer 305. This makes it possible for the display device 301 to effectively prevent unwanted patterns from appearing in the display area 1a when the display device 301 is not in operation.

[0106] The Z-direction arrangement pitch P11 of the light-absorbing sections 52 can take any value suitable for its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the Z-direction arrangement pitch P11 of the light-absorbing sections 52 is preferably 20 μm or more and 100 μm or less, and more preferably 30 μm or more and 100 μm or less.

[0107] From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, it is preferable that the Z-direction dimension W11 on the +X side of the light-absorbing section 52 be equal to or less than half the Z-direction array pitch P11. It is preferable that the Z-direction dimension W12 on the -X side of the light-absorbing section 52 be equal to or less than half the Z-direction dimension W11 on the +X side.

[0108] The X-direction height H11 of the light-absorbing portion 52 can take any value suitable for its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the X-direction height H11 of the light-absorbing portion 52 is preferably 50 μm or more and 150 μm or less, and more preferably 60 μm or more and 150 μm or less.

[0109] The inclination angle γ of the side surface on the -Z side of the light absorbing section 52 can take any value suitable for its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the inclination angle γ, as the inclination angle from the X direction to the -Z side, is preferably greater than 0° and equal to or less than 10°.

[0110] The inclination angle δ of the side surface on the +Z side of the light-absorbing section 52 can take any value suitable for its function. From the viewpoint of effectively transmitting light from the liquid crystal panel 8 and blocking external light, the inclination angle δ, as the inclination angle from the X direction to the +Z side, is preferably greater than 0° and equal to or less than 10°.

[0111] The display device 301 is similar to the first and second embodiments in that a louver layer 305 is provided in front of the liquid crystal panel 8 and the light-shielding frame 6. This ensures seamlessness between the display area 1a and the peripheral area 1b on the surface 1c of the display device 301.

[0112] In such a display device 301, the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is also disposed between the louver layer 305 and the air layer AG. This makes it possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 301 while suppressing the occurrence of unwanted patterns in the display area 1a. This makes it possible to easily increase the design freedom of the display device 301 and improve the aesthetic appeal of the appearance of the display device 301.

[0113] (Fourth embodiment) Next, a display device 401 according to the fourth embodiment will be described. The following description will focus on the differences from the first to third embodiments.

[0114] While the first to third embodiments illustrate a configuration in which a louver layer 305 is provided in front of the liquid crystal panel 8 and the light-shielding frame 6, the fourth embodiment illustrates a configuration in which a decorative layer 404 is provided instead of the louver layer 305. As shown in FIG. 10 , the decorative layer 404 is similar to the louver layer 305 in that it is provided in front of the liquid crystal panel 8 and the light-shielding frame 6, but its specific location is slightly different from that of the louver layer 305. FIG. 10 is an XZ cross-sectional view showing the configuration of a display device 401 according to the fourth embodiment. FIG. 10 schematically illustrates the arrangement of each layer in the XZ cross-sectional structure, and the thickness relationship between each layer may differ from that shown. While FIG. 10 illustrates an XZ cross-sectional structure corresponding to a portion of the peripheral region 1b extending in the Y direction, the concept of this embodiment is similarly applicable to an XY cross-sectional structure corresponding to a portion of the peripheral region 1b extending in the Z direction.

[0115] 6, a display device 401 shown in Fig. 10 has a cover panel 410 instead of the cover panel 110. The cover panel 410 has a decorative layer 404 instead of the louver layer 5.

[0116] The decorative layer 404 is disposed between the antireflection film 2 and the polarizing plate 72. The decorative layer 404 is disposed on the opposite side of the light-shielding frame 6 from the liquid crystal panel 8. The decorative layer 404 is disposed on the -X side of the antireflection film 2, and on the +X side of the optical layer 3, the light-shielding frame 6, the polarizing layer 107, and the liquid crystal panel 8. The decorative layer 404 is disposed between the antireflection film 2 and the polarizing plate 72. The decorative layer 404 is disposed between the antireflection film 2 and the optical layer 3. The light-shielding frame 6 is disposed between the decorative layer 404 and the liquid crystal panel 8. When viewed from the X direction, the light-shielding frame 6 overlaps the peripheral portion of the polarizing plate 72.

[0117] The decorative layer 404 extends in the YZ direction like a plate and has a substantially rectangular shape with the Y direction as the longitudinal direction. The decorative layer 404 has a pattern when viewed in the XZ plane. The pattern may be a wood grain pattern, a carbon fiber pattern, or a metal fine particle pattern. This allows a pattern corresponding to the pattern of the decorative layer 404 to be visible on the front surface 1c of the display device 401 when it is not in operation, thereby improving the design of the external appearance.

[0118] In the display device 401, the decorative layer 404 is provided in front of the liquid crystal panel 8 and the light-shielding frame 6. In the display device 401, the difference in reflectance between the display area 1a and the peripheral area 1b can be reduced, and the boundary between the display area 1a and the peripheral area 1b can be made less noticeable when the display device 401 is not in operation. In other words, seamlessness between the display area 1a and the peripheral area 1b on the surface 1c can be ensured, and the design of the display device 401 can be improved.

[0119] The decorative layer 404 can have a light transmittance adjusted to a predetermined range, which may be 5 to 85%. This allows the display device 401 to display an image on the liquid crystal panel 8 in the display area 1a instead of a pattern corresponding to the pattern on the decorative layer 404 during operation, thereby enabling the display function to be properly realized.

[0120] Furthermore, in the display device 401, the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is disposed between the decorative layer 404 and the air layer AG. This allows the imaging surface of the liquid crystal panel 8 to be positioned close to the decorative layer 404. As a result, the display device 401 can suppress blurring of images caused by the decorative layer 404 during operation, and can ensure that images from the liquid crystal panel 8 are clearly displayed in the display area 1a, thereby properly realizing its display function.

[0121] As described above, in the fourth embodiment, in the display device 401, the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is disposed between the decorative layer 404 and the air layer AG. This makes it possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 401 and to sharpen the image displayed in the display area 1a. This makes it possible to easily increase the design freedom of the display device 401, improve the design of the appearance of the display device 401, and improve the display performance of the display device 401.

[0122] 10 may be configured without the light-shielding frame 6. In this case, when the display device 401 is not in operation, a pattern corresponding to the pattern of the decorative layer 404 is visible on the surface 1c, so that elements, wiring, terminals, etc. in the peripheral portion 8b of the liquid crystal panel 8 can be hidden to some extent, thereby improving the design of the appearance.

[0123] (Fifth embodiment) Next, a display device 501 according to the fifth embodiment will be described. The following description will focus on the differences from the first to fourth embodiments.

[0124] The first to third embodiments illustrate a configuration in which a louver layer 5, 305 is provided in front of the liquid crystal panel 8 and the light-shielding frame 6. The fourth embodiment illustrates a configuration in which a decorative layer 404 is provided instead of the louver layer 5. The fifth embodiment illustrates a configuration in which a decorative layer 404 is provided in addition to the louver layer 5. As shown in FIG. 11 , the louver layer 5 and the decorative layer 404 are similar in that they are provided in front of the liquid crystal panel 8 and the light-shielding frame 6, but their specific locations are different. FIG. 11 is an XZ cross-sectional view showing the configuration of a display device 501 according to a fifth embodiment. FIG. 11 schematically illustrates the arrangement of each layer in the XZ cross-sectional structure, and the thickness relationship between each layer may differ from the illustrated relationship. While FIG. 11 illustrates the XZ cross-sectional structure corresponding to the portion of the peripheral region 1b extending in the Y direction, the concept of this embodiment is similarly applicable to the XY cross-sectional structure corresponding to the portion of the peripheral region 1b extending in the Z direction.

[0125] 11 has a cover panel 510 instead of the cover panel 410. The cover panel 510 has a decorative layer 404 in addition to the louver layer 5. The louver layer 5 is disposed between the decorative layer 404 and the polarizing plate 72.

[0126] The structure and function of the louver layer 5 are the same as those in the first embodiment. The structure and function of the decorative layer 404 are the same as those in the fourth embodiment.

[0127] In the display device 501, the decorative layer 404 and the louver layer 5 are provided in front of the liquid crystal panel 8 and the light-shielding frame 6, respectively. The decorative layer 404 is disposed on the +X side of the louver layer 5. In the display device 401, the difference in reflectance between the display area 1a and the peripheral area 1b can be reduced by the decorative layer 404, and can be further reduced by the louver layer 5. In the display device 401, the difference in reflectance between the display area 1a and the peripheral area 1b can be reduced in two stages, making the boundary between the display area 1a and the peripheral area 1b even less noticeable when the display device 401 is not in operation. In other words, seamlessness between the display area 1a and the peripheral area 1b on the surface 1c can be further ensured, and the design of the display device 401 can be further improved.

[0128] The decorative layer 404 can have a light transmittance adjusted to a predetermined range. The predetermined range may be 5 to 85%. This allows the display device 501 to display an image on the liquid crystal panel 8 in the display area 1a instead of a pattern corresponding to the pattern on the decorative layer 404 during operation, thereby enabling the display function to be properly realized.

[0129] Furthermore, in the display device 501, the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is disposed between the decorative layer 404 and the air layer AG. This allows the imaging plane of the liquid crystal panel 8 to be positioned closer to the decorative layer 404 than the liquid crystal panel 8. As a result, the display device 501 can suppress blurring of images caused by the decorative layer 404 during operation, and can ensure that images from the liquid crystal panel 8 are clearly displayed in the display area 1a, thereby properly realizing its display function.

[0130] As described above, in the fifth embodiment, in the display device 501, the decorative layer 404 is disposed in front of the louver layer 5, and the polarizing plate 72 in front of the liquid crystal layer 83 in the liquid crystal panel 8 is disposed between the louver layer 5 and the air layer AG. This makes it possible to further ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 501, while also achieving clarity of the image displayed in the display area 1a. This makes it possible to easily increase the design freedom of the display device 501, further improve the design quality of the appearance of the display device 501, and improve the display performance of the display device 501.

[0131] 11 may be configured without the light-shielding frame 6. In this case, when the display device 501 is not in operation, a pattern corresponding to the pattern of the decorative layer 404 is visible on the surface 1c, so that elements, wiring, terminals, etc. in the peripheral portion 8b of the liquid crystal panel 8 can be hidden to some extent, thereby improving the design of the appearance.

[0132] (Sixth embodiment) Next, a display device 601 according to the sixth embodiment will be described. The following description will focus on the differences from the first to fifth embodiments.

[0133] The fourth and fifth embodiments illustrate configurations that focus on the design and display function of the display device 501, but the sixth embodiment illustrates a configuration that focuses on the operation function in addition to the design and display function of the display device 601, as shown in FIG. 12. FIG. 12 is an XZ cross-sectional view showing the configuration of the display device 601 according to the sixth embodiment. FIG. 12 schematically illustrates the arrangement relationship of each layer in the XZ cross-sectional structure, and the relationship of the thickness of each layer may differ from the illustrated relationship. FIG. 12 illustrates the XZ cross-sectional structure corresponding to the portion of the peripheral region 1b extending in the Y direction, but the concept of this embodiment is similarly applicable to the XY cross-sectional structure corresponding to the portion of the peripheral region 1b extending in the Z direction.

[0134] 12 further includes a touch panel 613. The touch panel 613 is disposed between the polarizing plate 72 and the liquid crystal panel 8, and between the polarizing plate 72 and the air layer AG. The touch panel 613 may be inserted into the polarizing layer 107 and disposed between the polarizing plate 72 and the adhesive layer 174.

[0135] The touch panel 613 can be considered an out-cell type touch panel in that it is disposed outside the liquid crystal panel 8. The touch panel 613 can be considered an on-cell type touch panel in that it is disposed between the liquid crystal layer 83 and the polarizing plate 72 in front of it.

[0136] The touch panel 613 includes an adhesive layer 6131 , a touch sensor 6132 , and a peripheral circuit section 6133 .

[0137] The adhesive layer 6131 includes a light-transmitting adhesive and adheres the liquid crystal layer 83 to the anti-reflection film 81. The light-transmitting adhesive may be an optical glue such as OCR or OCA.

[0138] The touch sensor 6132 is arranged in an area corresponding to the display area 1a. The touch sensor 6132 has a plurality of first electrodes and a plurality of second electrodes spaced apart in the X direction. Each of the first electrodes extends in the Y direction. Each of the second electrodes extends in the Z direction. The plurality of first electrodes and the plurality of second electrodes form a plurality of intersection positions.

[0139] The peripheral circuit unit 6133 is arranged in an area corresponding to the peripheral area 1b. In the peripheral circuit unit 6133, elements, wiring, terminals, etc. for the circuit are arranged on a predetermined substrate. This circuit includes a circuit for controlling a plurality of first electrodes and a plurality of second electrodes. The peripheral circuit unit 6133 can detect changes in physical quantities at multiple intersections between the plurality of first electrodes and the plurality of second electrodes. If the touch panel 613 is a resistive film type, the peripheral circuit unit 6133 detects a resistance change caused by contact between a pair of electrodes at an intersection touched by the user 100 among the multiple intersections, thereby detecting the touch position. If the touch panel 613 is a projected capacitive type, the peripheral circuit unit 6133 detects a capacitance change at an intersection touched by the user 100 among the multiple intersections, thereby detecting the touch position.

[0140] In this case, the light-shielding frame 6 may be disposed between the polarizing plate 72 and the touch panel 613 in a region corresponding to the peripheral region 1b. This makes it possible to hide elements, wiring, terminals, etc. of the peripheral circuit unit 6133, thereby improving the design of the appearance of the display device 601.

[0141] As described above, in the sixth embodiment, the touch panel 613 is disposed between the polarizing plate 72 and the liquid crystal panel 8 in the display device 601. At this time, the light-shielding frame 6 covers the peripheral circuit unit 6133 from the +X side in the area corresponding to the peripheral area 1b. This makes it possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 601, to improve the clarity of the image displayed in the display area 1a, and to improve the operability of the display device 601. This makes it possible to easily increase the degree of freedom in designing the display device 601, to improve the design of the appearance of the display device 601, and to improve the display performance and operability of the display device 601.

[0142] The fifth embodiment and the sixth embodiment may be combined. That is, in a display device 601 shown in Fig. 12, the cover panel 510 may have a decorative layer 404 in addition to the louver layer 5. The configuration and function of the louver layer 5 are the same as those of the first embodiment. The configuration and function of the decorative layer 404 are the same as those of the fourth embodiment.

[0143] Even in such a display device 601, it is possible to ensure seamlessness between the display area 1a and the peripheral area 1b in the bondless display device 601, to improve the clarity of the image displayed in the display area 1a, and to improve the operability of the display device 601. Therefore, it is possible to easily improve the degree of freedom in designing the display device 601, to improve the design of the appearance of the display device 601, and to improve the display performance and operability of the display device 601.

[0144] (Appendix 1) a first antireflection film; a first polarizing plate disposed between the first anti-reflection film and the liquid crystal panel and polarizing light; Equipped with and further comprising at least one of a louver layer in which light-transmitting portions that transmit light and light-absorbing portions that absorb light are repeatedly arranged and a decorative layer having a pattern, between the first antireflection film and the first polarizing plate; Disposed at a distance from the liquid crystal panel Cover panel. (Appendix 2) a light-shielding frame disposed between the liquid crystal panel and at least one of the louver layer and the decorative layer, the light-shielding frame overlapping a peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first antireflection film; 10. A cover panel as described in Appendix 1. (Appendix 3) The cover panel includes the louver layer between the first anti-reflection film and the first polarizing plate. 10. A cover panel as described in Appendix 1. (Appendix 4) a light-shielding frame disposed between the louver layer and the liquid crystal panel, the light-shielding frame overlapping the peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first anti-reflection film; 10. A cover panel as described in Appendix 3. (Appendix 5) The light-shielding frame is disposed between the louver layer and the first polarizing plate. 10. A cover panel as described in Appendix 4. (Appendix 6) A first cross-sectional area of ​​the light absorbing portion parallel to the front surface of the first antireflection film is smaller than a second cross-sectional area of ​​the light absorbing portion parallel to the front surface of the first antireflection film and located on the first polarizing plate side. 6. The cover panel according to any one of appendixes 3 to 5. (Appendix 7) A first cross-sectional area of ​​the light absorbing section parallel to the front surface of the first antireflection film is larger than a second cross-sectional area of ​​the light absorbing section parallel to the front surface of the first antireflection film and located on the first polarizing plate side. 6. The cover panel according to any one of appendixes 3 to 5. (Appendix 8) The cover panel includes the decorative layer between the first antireflection film and the first polarizing plate. 10. A cover panel as described in Appendix 1. (Appendix 9) a light-shielding frame disposed between the decorative layer and the liquid crystal panel, the light-shielding frame overlapping a peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first antireflection film; 10. A cover panel as described in Appendix 8. (Appendix 10) further comprising a touch panel disposed between the first polarizing plate and the liquid crystal panel; The light-shielding frame is disposed between the first polarizing plate and the touch panel. 10. The cover panel of claim 4 or 9. (Appendix 11) The light-shielding frame is disposed between the first polarizing plate and the liquid crystal panel. 10. The cover panel of any one of appendixes 2, 4, and 9. (Appendix 12) the first polarizing plate has a first surface facing the first antireflection film and a second surface located opposite to the first surface, The cover panel is Further provided with a second anti-reflection film disposed on the second surface side and suppressing reflection of light on the second surface. 12. The cover panel according to any one of claims 1 to 11. (Appendix 13) The second anti-reflection film is adhered to the second surface by an adhesive layer. 13. The cover panel of claim 12. (Appendix 14) The cover panel has a curved surface. 14. The cover panel of any one of claims 1 to 13. (Appendix 15) The cover panel includes the decorative layer between the first anti-reflection film and the first polarizing plate, and the louver layer between the decorative layer and the first polarizing plate. 10. A cover panel as described in Appendix 1. (Appendix 16) a light-shielding frame disposed between the louver layer and the liquid crystal panel, the light-shielding frame overlapping the peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first anti-reflection film; 16. The cover panel of claim 15. (Appendix 17) The display device further includes a touch panel disposed between the first polarizing plate and the liquid crystal panel. 16. The cover panel of claim 15. (Appendix 18) a light-shielding frame disposed between the first polarizing plate and the touch panel, the light-shielding frame overlapping a peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first anti-reflection film; 18. The cover panel of claim 17. (Appendix 19) An LCD panel, a cover panel according to any one of claims 1 to 18, which is disposed on a front side of the liquid crystal panel at a distance from the liquid crystal panel; Equipped with The liquid crystal panel is A liquid crystal layer; a second polarizing plate disposed on the rear side of the liquid crystal layer and polarizing light; have Display device. (Appendix 20) The liquid crystal display device further includes a support member connected to an edge of the cover panel and an edge of the liquid crystal panel. 20. The display device of claim 19.

[0145] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention described in the claims and their equivalents. [Explanation of symbols]

[0146] 1,101,201,301,401,501,601 Display devices 2 Anti-reflection film 3 optical layer 5,205,305 louver layers 6 Light-blocking frame 7,107 polarizing layers 8 LCD panel 9 Backlight Unit 10,110,210,310,410,510,610 Cover Panel 51 Translucent part 52 Absorption section 72 Polarizing Plate 86 Polarizing Plate 404 Decorative layer 613 Touch Panel

Claims

1. a first antireflection film; a first polarizing plate disposed between the first anti-reflection film and a liquid crystal panel and polarizing light; a louver layer disposed between the first antireflection film and the first polarizing plate, the louver layer including a repeated arrangement of light-transmitting portions that transmit light and light-absorbing portions that absorb light; a light-shielding frame that is disposed between the louver layer and the liquid crystal panel and overlaps a peripheral portion of the first polarizing plate when viewed through from a direction perpendicular to the front surface of the first antireflection film; a touch panel disposed between the first polarizing plate and the liquid crystal panel; Equipped with the light-shielding frame is disposed between the first polarizing plate and the touch panel, Disposed at a distance from the liquid crystal panel Cover panel.

2. The light-shielding frame is disposed between the louver layer and the first polarizing plate. The cover panel according to claim 1 .

3. A first cross-sectional area of ​​the light absorbing portion parallel to the front surface of the first antireflection film is smaller than a second cross-sectional area of ​​the light absorbing portion parallel to the front surface of the first antireflection film and located on the first polarizing plate side. The cover panel according to claim 1 .

4. A first cross-sectional area of ​​the light absorbing portion parallel to the front surface of the first antireflection film is larger than a second cross-sectional area of ​​the light absorbing portion parallel to the front surface of the first antireflection film and located on the first polarizing plate side. The cover panel according to claim 1 .

5. The cover panel further includes a decorative layer having a pattern between the first anti-reflection film and the first polarizing plate. The cover panel according to claim 1 .

6. The light-shielding frame is disposed between the decorative layer and the liquid crystal panel. The cover panel according to claim 5 .

7. The light-shielding frame is disposed between the first polarizing plate and the liquid crystal panel. The cover panel according to claim 1 .

8. A first anti-reflection film; a first polarizing plate disposed between the first anti-reflection film and the liquid crystal panel, polarizing light, and having a first surface facing the first anti-reflection film and a second surface located opposite to the first surface; at least one of a louver layer in which light-transmitting portions that transmit light and light-absorbing portions that absorb light are repeatedly arranged and a decorative layer having a pattern, the louver layer being disposed between the first anti-reflection film and the first polarizing plate; a second antireflection film disposed on the second surface side and suppressing reflection of light on the second surface; Equipped with the second antireflection film is adhered to the second surface by an adhesive layer containing a material that adjusts light transmittance; Disposed at a distance from the liquid crystal panel Cover panel.

9. The cover panel has a curved surface. The cover panel according to claim 1 .

10. A first anti-reflection film; a first polarizing plate disposed between the first anti-reflection film and a liquid crystal panel and polarizing light; a decorative layer having a pattern and disposed between the first antireflection film and the first polarizing plate; a louver layer disposed between the decorative layer and the first polarizing plate, the louver layer including a repetitive arrangement of light-transmitting portions that transmit light and light-absorbing portions that absorb light; a touch panel disposed between the first polarizing plate and the liquid crystal panel; Equipped with Disposed at a distance from the liquid crystal panel Cover panel.

11. The display further comprises a light-shielding frame disposed between the louver layer and the liquid crystal panel, the light-shielding frame overlapping the peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first anti-reflection film. The cover panel according to claim 10.

12. a light-shielding frame disposed between the first polarizing plate and the touch panel, the light-shielding frame overlapping a peripheral portion of the first polarizing plate when viewed from a direction perpendicular to the front surface of the first anti-reflection film; The cover panel according to claim 10.

13. An LCD panel, the cover panel according to claim 1 , which is disposed on a front side of the liquid crystal panel at a distance from the liquid crystal panel; Equipped with The liquid crystal panel is A liquid crystal layer; a second polarizing plate disposed on the rear side of the liquid crystal layer and polarizing light; have Display device.

14. No polarizing plate is disposed between the first polarizing plate and the liquid crystal layer.

14. The display device of claim 13.

Images