CN110989241B - Display device - Google Patents

Display device Download PDF

Info

Publication number
CN110989241B
CN110989241B CN201911369373.5A CN201911369373A CN110989241B CN 110989241 B CN110989241 B CN 110989241B CN 201911369373 A CN201911369373 A CN 201911369373A CN 110989241 B CN110989241 B CN 110989241B
Authority
CN
China
Prior art keywords
antireflection film
display device
moth
eye
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911369373.5A
Other languages
Chinese (zh)
Other versions
CN110989241A (en
Inventor
方丽婷
宋琼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Tianma Microelectronics Co Ltd
Original Assignee
Xiamen Tianma Microelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Tianma Microelectronics Co Ltd filed Critical Xiamen Tianma Microelectronics Co Ltd
Priority to CN201911369373.5A priority Critical patent/CN110989241B/en
Publication of CN110989241A publication Critical patent/CN110989241A/en
Application granted granted Critical
Publication of CN110989241B publication Critical patent/CN110989241B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/118—Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the invention discloses a display device. The display device includes: the first antireflection film is provided with a plurality of moth-eye microstructures, and the tops of the moth-eye microstructures face the light outgoing side of the display device; the first antireflection film is positioned in the middle area and the edge area; in the first antireflection film, the arrangement density of the moth-eye microstructures in the edge region is greater than that in the middle region; and/or the display device further comprises a second antireflection film, wherein the second antireflection film is located in the edge region, a plurality of moth-eye microstructures are arranged in the second antireflection film, and the tops of the moth-eye microstructures face away from the light emitting side of the display device. The embodiment of the invention solves the problem of uneven display caused by light leakage at the periphery and the edge area of the display device, and can balance abnormal display generated at the edge area by reasonably distributing the moth-eye microstructure arrangement density of the first antireflection film; and the second antireflection film absorbs light leakage at the edge area, so that the brightness increase at the edge position caused by the light leakage is avoided.

Description

Display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display device.
Background
When a larger-sized display panel or display screen is applied to fields such as vehicle-mounted display, the display panel and the display device are usually designed to be curved for matching with a matching structure. Moreover, with the development of vehicle-mounted display in a clear, multi-modal and multi-diversified manner, curved surface display has become a major trend for vehicle-mounted display in the future. The curved display panel refers to a display panel with a display interface having a radian, and can include a flexible display panel prepared on a flexible substrate such as plastic, metal sheet or glass sheet.
For the liquid crystal display panel, in the preparation process of the curved liquid crystal display panel, the liquid crystal display panel after being formed into a box can be bent hard to realize the arc surface display effect of a display interface. However, in the curved liquid crystal display panel prepared by the hard bending technology, because the array substrate and the opposite substrate in the liquid crystal display panel are forcibly bent, stress birefringence is generated when the array substrate and the opposite substrate are bent, and meanwhile, the upper and lower polarizing sheets of the liquid crystal display panel are also bent to cause that the polarization states of the transmission axes are not orthogonal, so that the light leakage phenomenon of the liquid crystal display panel is caused in a dark state, and particularly, the bending degree of the edge area of the panel is large, so that the four corners and the edges of the display panel have serious light leakage.
Disclosure of Invention
The invention provides a display device, which is used for solving the problem of light leakage of an edge area of the display device and reducing the uneven brightness of a panel.
In a first aspect, an embodiment of the present invention provides a display device, which includes
A first antireflection film in which a plurality of moth-eye microstructures are arranged, wherein tops of the moth-eye microstructures face a light exit side of the display device;
the display device also comprises a middle area and an edge area, wherein the edge area is connected with the edge of the middle area, and the first antireflection film is positioned in the middle area and the edge area;
in the first antireflection film, the arrangement density of the moth eye microstructures in the edge region is greater than that in the intermediate region; and/or the presence of a gas in the atmosphere,
the display device comprises a second antireflection film, and the second antireflection film is positioned at the edge area; the second antireflection film is provided with a plurality of moth-eye microstructures, and the tops of the moth-eye microstructures face away from the light emitting side of the display device.
According to the display device provided by the embodiment of the invention, the first antireflection film is arranged, wherein a plurality of moth-eye microstructures are arranged in the first antireflection film, and the tops of the moth-eye microstructures face the light outgoing side of the display device; the arrangement density of the moth-eye microstructures in the edge region of the first antireflection film is greater than that of the moth-eye microstructures in the middle region, and/or a second antireflection film is arranged in the display device and is only positioned in the edge region, and the moth-eye microstructures are arranged back to the light emergent side of the display device, so that the problem of uneven display caused by light leakage around the display device and in the edge region is solved, on one hand, the arrangement density of the moth-eye microstructures in the first antireflection film can be reasonably distributed, reflection of external light in the edge region is enhanced, and abnormal display generated by the edge region due to packaging or arrangement problems is balanced to a certain extent; on the other hand, the second antireflection film can absorb light leakage at the edge area, so that the light leakage at the edge area of the display device is reduced, and the brightness increase at the edge position caused by the light leakage is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another display device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 7 is a top view of a display device according to an embodiment of the present invention;
FIG. 8 is a top view of another display device provided in accordance with an embodiment of the present invention;
fig. 9 is a top view of another display device according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background section, the curved liquid crystal display panel has a large bending degree in the edge region, which increases the birefringence stress of the substrate, and thus, the light passes through the substrate with a significant birefringence, and the light is scattered. Meanwhile, the upper and lower polaroids of the liquid crystal display panel are bent to a large degree, so that the polarization states of the transmission axes are not orthogonal, and part of polarized light can be emitted through the upper polaroid, and finally, the liquid crystal display panel can generate obvious light leakage in four corners and edge areas. In addition, the liquid crystal display panel has non-uniform in-plane cell thickness due to the problems of the manufacturing process, so that a certain color cast is generated at the edge of the display panel, and a certain light leakage is generated at the edge of the display panel due to the problems of packaging and light shielding.
In view of the above problems, embodiments of the present invention provide a display device. The display device includes a first antireflection film; the first antireflection film is provided with a plurality of moth-eye microstructures, and the tops of the moth-eye microstructures face to the light outgoing side; the display device also comprises a middle area and an edge area, wherein the edge area is connected with the edge of the middle area, and the first antireflection film is positioned in the middle area and the edge area; in the first antireflection film, the arrangement density of the moth-eye microstructures in the edge region is greater than that in the middle region; and/or the display device comprises a second antireflection film, wherein the second antireflection film is positioned at the edge region; the second antireflection film is provided with a plurality of moth-eye microstructures, and the tops of the moth-eye microstructures face away from the light exit side of the display device.
The moth-eye microstructure is a nano-or micron-scale raised structure, which may be a cone-shaped structure or a mesa-shaped microstructure, such as a cone, a pyramid, a truncated cone, or a truncated pyramid. The light is absorbed by the moth-eye microstructures after being reflected or refracted for a plurality of times between adjacent moth-eye microstructures, and the first antireflection film formed by the moth-eye microstructures can absorb the light macroscopically, so that the reflection of the light incident on the first antireflection film is reduced. The top of the moth-eye microstructure faces the light-emitting side of the display device, so that external light from the light-emitting side can be absorbed, reflection of the external light is reduced, and the contrast of display is ensured. The edge region of the display device at least includes a region with light leakage or abnormal display caused by bending or packaging, such as a region with light leakage caused by poor packaging or shading, a region with blue or yellow periphery caused by uneven panel box thickness, and the middle region is superior to the edge region of the display device in bending and packaging effects, thereby having better display uniformity. The distribution density of the moth-eye microstructures in the edge region of the first antireflection film is greater than that of the moth-eye microstructures in the middle region, the antireflection effects of the edge region and the first antireflection film in the middle region on external light can be distinguished, the distribution density of the moth-eye microstructures can represent the antireflection effect of the antireflection film, the distribution density of the moth-eye microstructures in the edge region is greater, the antireflection effect is better, the display brightness of the edge region panel can be reduced to a certain extent, the brightness increase caused by light leakage of the edge region is balanced, and meanwhile, the problem of uneven display of the edge region due to poor packaging or shading and the like can be reduced.
In addition, the display device may be provided with a second antireflection film, and the moth-eye microstructures in the second antireflection film may be oriented in a direction opposite to that of the first antireflection film, so that light leakage caused by bending or poor light shielding of a part of the liquid crystal display panel or the backlight may be absorbed, and the increase in luminance in the edge region may be reduced. It should be noted that, when the first antireflection film and the second antireflection film are disposed in the display device at the same time, light absorbed by the second antireflection film and the first antireflection film comes from different directions, where the first antireflection film is used for antireflection of external light, and the second antireflection film is used for reducing light leakage from the edge of the liquid crystal display panel or the backlight, so that the second antireflection film and the first antireflection film need to be disposed in sequence along the light emitting direction of the display device.
According to the display device provided by the embodiment of the invention, the first antireflection film is arranged, wherein a plurality of moth-eye microstructures are arranged in the first antireflection film, and the tops of the moth-eye microstructures face the light emergent side of the display device; the arrangement density of the moth-eye microstructures in the edge region of the first antireflection film is greater than that of the moth-eye microstructures in the middle region, and/or a second antireflection film is arranged in the display device, the second antireflection film is only positioned in the edge region, and the moth-eye microstructures are arranged back to the light emergent side of the display device, so that the problem of uneven display caused by light leakage and the like around the display device and in the edge region is solved, on one hand, the arrangement density of the moth-eye microstructures in the first antireflection film can be reasonably distributed, reflection of external light in the edge region is enhanced, and abnormal display caused by packaging or arrangement problems in the edge region is balanced to a certain extent; on the other hand, the light leakage at the edge area can be absorbed by the second antireflection film, so that the light leakage at the edge area of the display device is reduced, and the brightness increase at the edge position caused by the light leakage is avoided.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Specifically, based on the above concept, embodiments of the present invention provide various display devices. Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 1, the display device includes: a first antireflection film 11, wherein a plurality of moth-eye microstructures 10 are arranged in the first antireflection film 11, and the tops of the moth-eye microstructures 10 face the light outgoing side of the display device; the display device further comprises a middle area 100 and an edge area 200, wherein the edge area 200 is connected with the edge of the middle area 100, and the first antireflection film 11 is positioned in the middle area 100 and the edge area 200; in the first antireflection film 11, the arrangement density of the moth-eye microstructures 10 in the edge region 200 is smaller than that of the moth-eye microstructures 10 in the intermediate region 100. As shown, the edge region 200 surrounds the middle region 100, and light leakage may occur in the edge region 200. When the first antireflection film 11 is disposed, the arrangement density of the moth-eye microstructures 10 in the edge region 200 may be greater than that of the moth-eye microstructures 10 in the intermediate region 100, so as to enhance the antireflection effect and balance the problem of light leakage in the edge region 200.
As shown in fig. 1, the middle region 100 is better than the edge region 200 in bending and packaging effects relative to the edge region 200 of the display device, and thus has better display uniformity. By setting the arrangement density of the moth-eye microstructures 10 in the edge region 200 of the first antireflection film 11 to be greater than the arrangement density of the moth-eye microstructures 10 in the middle region 100, the edge region 200 can have a better antireflection effect, so that the display brightness of the panel in the edge region 200 is reduced, the brightness increase caused by light leakage in the edge region 200 is balanced, and the problem of display unevenness caused by poor packaging or light shielding of the edge region 200 can be reduced.
Specifically, in providing the first antireflection film 11, the moth eye microstructure 10 of the edge region 200 may be provided at the first period C 1 The first period is the distance between the centers of any two adjacent moth-eye microstructures 10 in the edge region; the moth eye microstructure 10 of the intermediate region 100 has a second period C 2 The second period is the distance between the centers of any two adjacent moth-eye microstructures 10 in the middle area; wherein, C 1 ＜C 2 . The moth eye microstructure 10 of the edge region 200 is uniformIn a first period C 1 Arranged in an array, the moth-eye microstructure 10 of the intermediate region 100 is uniform at a second period C 2 The array arrangement can avoid the problem of inconsistent antireflection effect caused by uneven arrangement of moth eye microstructures, and ensure that the antireflection effects of the marginal region 200 and the intermediate region 100 are respectively kept uniform, thereby avoiding the phenomenon of uneven brightness of the marginal region or the intermediate region caused by the antireflection film.
Of course, considering that the edge region of the display device may not uniformly leak light or may have uniform chromaticity display abnormality, the first antireflection film may be arranged such that the arrangement density of the moth-eye microstructures is gradually decreased in a direction from the edge toward the center in accordance with the luminance and chromaticity display abnormality phenomena, which are sequentially decreased from the edge to the center. Fig. 2 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 2, the display device is different from the display device shown in fig. 1 in that the arrangement density of the moth-eye microstructures 10 on the first antireflection film 11 is gradually decreased along the direction from the edge of the display device toward the center. At this time, the antireflection effect of the first antireflection film 11 is gradually reduced from the edge toward the center, so as to correspond to the gradually reduced abnormal display phenomenon appearing from the edge to the center of the conventional display device, thereby ensuring a position with a high abnormal display degree caused by light leakage and the like in the display device, obtaining a better antireflection effect through the first antireflection film 11, and obtaining a relatively weak antireflection through the first antireflection film 11 at a position with a low abnormal display degree, thereby more reasonably balancing the abnormal display phenomenon, reducing abnormal display, realizing the uniformity of the display brightness of the display device, and improving the display quality.
Fig. 3 is a schematic structural diagram of another display device provided by an embodiment of the invention, and referring to fig. 3, the display device includes a second antireflection film 12, where the second antireflection film 12 is located at an edge region 200; the second antireflection film 12 is provided with a plurality of moth-eye microstructures 10, and the top of each moth-eye microstructure 10 faces away from the light exit side of the display device.
The top of the moth-eye microstructure 20 in the second antireflection film 12 faces away from the light exit side of the display device, that is, the moth-eye microstructure 20 faces toward the liquid crystal display panel 30, and the second antireflection film 12 is located in the edge region 200, so that light leakage generated by bending or poor light shielding of a part of the edge region of the liquid crystal display panel or the backlight module can be absorbed, and the brightness increase of the edge region is reduced. Of course, the second antireflection film 12 is disposed on the surface of the cover plate 20 only as a preferred embodiment of the present invention, and those skilled in the art can also dispose the second antireflection film 12 at other positions, which is not described herein.
Fig. 4 is a schematic structural diagram of another display device provided in an embodiment of the present invention, and referring to fig. 4, the display device includes: a first antireflection film 11, wherein a plurality of moth-eye microstructures 10 are arranged in the first antireflection film 11, and the tops of the moth-eye microstructures 10 face the light outgoing side of the display device; the display device further comprises a middle region 100 and an edge region 200, wherein the edge region 200 is connected with the edge of the middle region 100, and the first antireflection film 10 is positioned in the middle region 100 and the edge region 200; the display device further comprises a second antireflection film 12, the second antireflection film 12 is located at the edge region 200, and the second antireflection film 12 and the first antireflection film 11 are sequentially arranged along the light emitting direction of the display device; the second antireflection film 12 is provided with a plurality of moth-eye microstructures 10, and the top of each moth-eye microstructure 10 faces away from the light exit side of the display device.
As shown in fig. 4, when the first antireflection film 11 and the second antireflection film 12 are provided in the display device at the same time, the second antireflection film 12 and the first antireflection film 11 are preferably arranged in order in the light exit direction, and the top of the moth-eye microstructure 10 of the first antireflection film 11 faces the light exit side, so that the first antireflection film 11 can attenuate the external light from the light exit side; the top of the moth-eye microstructure 10 of the second antireflection film 12 faces away from the light-emitting side, and can be used for antireflection of light from the liquid crystal display panel or the backlight module, thereby reducing light leakage of the liquid crystal display panel or the backlight module in the edge region, reducing brightness increase of the edge region, and improving display unevenness of the edge region and the middle region. The size and arrangement density of the moth eye microstructures 10 in the first and second antireflection films 11 and 12 may be the same. Considering that the intensity of the external light and the brightness difference caused by the abnormal display inside the display device are different according to different conditions, the anti-reflection effect for the external light and the anti-reflection effect for the abnormal display inside the display device can be adaptively and differently set. For example, when the display device is a curved display device and there is significant edge light leakage, the arrangement density of the moth-eye microstructures 10 in the second antireflection film 12 may be set to be greater than that of the moth-eye microstructures 10 in the first antireflection film 11, so as to ensure that the second antireflection film 12 effectively reduces the light leakage.
In the display device provided by the embodiment of the invention, in order to ensure the antireflection effect of the first antireflection film and the second antireflection film, the period of the moth-eye microstructure therein may be set within a range of 100-500nm, and the height of the moth-eye microstructure is set within a range of 100-300nm, where the period of the moth-eye microstructure refers to a distance between centers of any two adjacent moth-eye microstructures. Compared with the moth-eye microstructure with the period of more than 500nm, the moth-eye microstructure with the period of less than 500nm can obviously increase the absorption capacity to the wide-spectrum light of the external environment, and has lower reflectivity to the light with different incidence angles, thereby realizing the wide-angle low reflectivity. In addition, the period of the moth-eye microstructure is set to be more than 100nm, so that the preparation difficulty and the requirement of the moth-eye microstructure with a small pitch can be reduced, and the actual process difficulty is reduced.
Fig. 5 is a schematic structural diagram of another display device provided by an embodiment of the present invention, and referring to fig. 5, on the basis of the above embodiment, a first antireflection film 11 and a second antireflection film 12 may be simultaneously disposed in the display device. Specifically, the display device comprises a first antireflection film 11, wherein a plurality of moth-eye microstructures 10 are arranged in the first antireflection film 11, and the tops of the moth-eye microstructures 10 face the light outgoing side of the display device; the display device further comprises a middle area 100 and an edge area 200, wherein the edge area 200 is connected with the edge of the middle area 100, and the first antireflection film 11 is positioned in the middle area 100 and the edge area 200; in the first antireflection film 11, the arrangement density of the moth eye microstructures 10 in the edge region 200 is greater than the arrangement density of the moth eye microstructures 10 in the intermediate region 100. The display device further comprises a second antireflection film 12, the second antireflection film 12 is located in the edge region 200, and the second antireflection film 12 and the first antireflection film 11 are sequentially arranged along the light emitting direction of the display device; the second antireflection film 12 is provided with a plurality of moth-eye microstructures 10, and the top of each moth-eye microstructure 10 faces away from the light exit side of the display device.
When the first antireflection film and the second antireflection film are arranged, the antireflection effect, the display device structure and the manufacturing process thereof need to be considered, and the position of the antireflection film needs to be reasonably arranged. Therefore, optionally, as shown in fig. 4 and 5, the display device further includes a liquid crystal display panel 30 and a cover plate 20 disposed in sequence along the light exit direction; the first antireflection film 11 may be provided on the surface of the light exit side of the cover plate 20. At this time, the first antireflection film 11 can prevent the ambient light from reflecting on the surface of the cover plate 20, and also can prevent the ambient light from entering and passing through the cover plate 20 to reflect on other flat structures inside the display device, so that the ambient light on the light emitting side of the cover plate 20 can be effectively reduced. In addition, the first antireflection film 11 is disposed on the cover plate 20, so that the antireflection film can be prepared on the cover plate 20 in advance, and then the cover plate 20 is attached to the panel, thereby preventing influence on other processes of the panel. In addition, the first antireflection film can be arranged between the liquid crystal display panel and the cover plate, and the first antireflection film is used for absorbing the external light passing through the cover plate and reducing the reflection of the external light on the surface of the liquid crystal display panel. Of course, in order to achieve a better ambient light antireflection effect, two layers of the first antireflection films may be disposed to perform antireflection on the surface of the cover plate and antireflection on the surface of the liquid crystal display panel, which are not limited herein. It should also be noted that, when the display device shown in fig. 5 is provided with the first antireflection film 11 and the second antireflection film 12 at the same time, the first antireflection film 11 is preferably disposed on the light exit side of the second antireflection film 12, that is, the first antireflection film 11 and the second antireflection film 12 are preferably disposed in sequence along the light exit direction, so as to realize the antireflection of the first antireflection film 11 to the external light and the absorption of the second antireflection film 12 to the light leakage of the liquid crystal display panel 30 and the backlight module, and ensure that the respective antireflection and light leakage absorption do not interfere with each other.
The embodiment of the invention also provides two specific arrangement modes for the second antireflection film. With continued reference to fig. 4 and 5, the display device further includes a liquid crystal display panel 30 and a cover plate 20 disposed in this order along the light exit direction, and the second antireflection film 12 is disposed on the surface of the cover plate 20 on the side away from the light exit side. Obviously, the second antireflection film 12 is disposed on the surface of the cover plate 20 deviating from the light-emitting side, and the second antireflection film 12 may be formed on the surface of the cover plate 20 deviating from the light-emitting side in the manufacturing process, and then the cover plate 20 is attached to the liquid crystal display panel 30, so that the manufacturing process does not need to be added to the modules such as the liquid crystal display panel 30, and the influence on the existing manufacturing process can be reduced as much as possible. In addition, the second antireflection film 12 is disposed on the surface of the cover plate 20, that is, the second antireflection film 12 is disposed on the outermost substrate of the light exit side of the display device, and can weaken all the light from the edge region 200 of one side of the liquid crystal display panel 30, including abnormal light leakage from the middle region and the edge region of the liquid crystal display panel 30 and the backlight module providing backlight to the liquid crystal display panel 30, so as to absorb light leakage caused by various reasons, prevent the light leakage from exiting from the cover plate 20 of the display device, and thus achieve uniformity of brightness of the display device.
It should be noted that, since the first antireflection film 11 and the second antireflection film 12 need to be formed on both surfaces of the cover plate 20, respectively, there is a problem in that the films are sequentially prepared. Since the second antireflection film 12 is located in the edge region 200 of the display device, optionally, the second antireflection film 12 may be prepared in the edge region 200 of one side surface of the cover plate 20, and then the first antireflection film 11 may be prepared in the middle region 100 and the edge region 200 of the other side surface by adsorbing or supporting the middle region 100 of the side surface, so that the problem that the first antireflection film 11 cannot be supported when the second antireflection film 12 is prepared may be avoided. It should be noted that, since the second antireflection film 12 is located in the edge region 200, when the cover plate 20 is attached, a non-full-attaching manner needs to be adopted to avoid that the attaching tape covers the second antireflection film 12, thereby affecting the antireflection of the second antireflection film 12.
Fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 6, the display device further includes a backlight module 40, a liquid crystal display panel 30 and a cover plate 20, which are sequentially disposed along a light emitting direction, wherein the liquid crystal display panel 30 includes an array substrate 21 adjacent to the backlight module 40; the second antireflection film 12 is disposed on a surface of the array substrate 21 facing the backlight module 40. In this case, the second antireflection film 12 is located on one surface of the array substrate 21, and the second antireflection film 12 may be formed on the surface of the array substrate 21 when the liquid crystal display panel 30 is manufactured, or the second antireflection film 12 may be formed on the surface of the array substrate 21 after the liquid crystal display panel 30 is manufactured. The second antireflection film 12 is disposed on the array substrate 21 of the liquid crystal display panel 30, and on one hand, the second antireflection film 12 is suitable for a process of fully laminating the cover plate 20 and the liquid crystal display panel 30, and on the other hand, the second antireflection film 12 can directly reduce light emitted from the backlight module 40 in the edge region 200, thereby reducing light leakage of the entire display device in the edge region 200.
For the solution of weakening light leakage at the edge region of the display device by using the second antireflection film, the light leakage region of the actual display device needs to be detected in advance to specifically weaken the light leakage problem. Fig. 7 is a top view of a display device according to an embodiment of the present invention, and referring to fig. 7, the display device includes a first side 101, a second side 102, a third side 103, and a fourth side 104 connected end to end in sequence, and the display device is curved around a central axis 1, where the central axis 1 is parallel to the first side 101 and the third side 103 respectively; the second antireflection film 12 includes a first sub antireflection film 121 and a second sub antireflection film 122, the first sub antireflection film 121 is located in the edge region 200 near the second edge 102, and the second sub antireflection film 122 is located in the edge region 200 near the fourth edge 104.
The display device shown in fig. 7 is a curved display device, and the bending process of the curved display device is substantially performed around the central axis 1, that is, the first side 101 and the third side 103 of the display device move towards the central axis 1, and the second side 102 and the fourth side 104 deform. At this time, the first side 101 and the third side 103 are kept parallel to the central axis 1, and the second side 102 and the fourth side 104 become curved lines. In the curved display device shown in fig. 6, the light leakage at the edge region 200 is mostly present at the edge region where the bent and deformed side edge is located, i.e. the edge region where the second edge 102 and the fourth edge 104 are located. Therefore, when the second antireflection film 12 is manufactured, it is necessary to provide the first sub antireflection film 121 in the edge area where the second side 102 is located and the second sub antireflection film 122 in the edge area where the fourth side 104 is located, respectively. The specific positions of the first sub antireflection film 121 and the second sub antireflection film 122 are the areas close to the second side 102 and the fourth side 104 in the edge area 200, respectively.
As shown in fig. 7, it is further preferable that the first sub antireflection film 121 has a width W in the extending direction of the central axis 1 1 (ii) a The width of the second sub antireflection film 122 in the extending direction of the central axis 1 is W 2 (ii) a The length of the first side 101 is L 1 Wherein, 0 < W 2 ≤L 1 /3。
The curved display device is a rectangular display device, after the curved display device is bent around the central axis 1, the light leakage degree in the edge areas where the second side 102 and the fourth side 104 are located depends on the bending degree, and when the bending degree is large, the stress birefringence of the display device is severe, and the light leakage area is obviously increased. As shown in fig. 7, according to the actual test results, it is found that when the curved display device manufactured by the hard bending technology is used, that is, when the curved display device is bent around a central axis 1, the central axis 1 is parallel to the first side 101 and the third side 103 of the display device, and the light leakage area of the curved display device includes two portions, and the two portions of the light leakage area are located in the area near the second side 102 in the edge area 200 and the area near the fourth side 104 in the edge area 200, respectively. Under the limit bending degree of the display device, the length of the light leakage area of each part in the extending direction of the central axis 1 is the largest, and can reach one third of the side length of the first side 101 or the third side 103. The first sub antireflection film 121 is thus set to have a width W in the extending direction of the central axis 1 1 ，0＜W 1 ≤L 1 And/3, the light leakage region generated under all achievable bending degrees can be completely covered, and the pertinence weakening of light leakage is ensured. Since the lengths of the two opposite sides of the rectangular display device are the same, the width W of the second sub antireflection film 122 in the extending direction of the central axis 1 is the same 2 The maximum value of (b) may also be set not to exceed one third of the length of the adjacent sides; the widths of the first sub antireflection film and the second sub antireflection film are set within the numerical range, so that the light leakage region can be effectively covered, and the influence on the brightness of the middle display region can be avoided. Of course, those skilled in the art need to predetermine the light leakage region for display devices of different curvatures to correspondingly dispose the first sub antireflection film and the second sub antireflection filmThe width of the antireflective film is given here only as an exemplary arrangement.
Fig. 8 is a top view of another display device provided by an embodiment of the present invention, and referring to fig. 8, on the basis of the above embodiment, optionally, the second antireflection film in the display device may further include a third sub antireflection film 123 and a fourth sub antireflection film 124; the third subsidiary antireflection film 123 is located in the edge region 200 in a region near the first side 101; the fourth subsidiary antireflection film 124 is located in a region near the third side 103 in the edge region 200.
The third sub antireflection film 123 and the fourth sub antireflection film 124 are respectively disposed in the edge regions where the first edge 101 and the third edge 103 are located, so that light leakage caused by bending deformation and the like in the edge regions can be weakened, and the brightness abnormality of the edge regions where the first edge and the third edge of the panel are located can be relieved to a certain extent. It should be noted that specific positions and lengths of the third sub anti-reflection reducing film 123 and the fourth sub anti-reflection reducing film 124 also need to be set according to an actual light leakage area, and for example, the first sub anti-reflection reducing film 121, the second sub anti-reflection reducing film 122, the third sub anti-reflection reducing film 123 and the fourth sub anti-reflection reducing film 124 may be a segment of sub anti-reflection reducing film structure respectively set at an edge position. Preferably, the lengths of the third sub anti-reflection film 123 and the fourth sub anti-reflection film 123 are equal to the lengths of the first side 101 and the third side 103, and the lengths of the first sub anti-reflection film 121 and the second sub anti-reflection film 122 are equal to the lengths of the second side 102 and the fourth side 104, with reference to fig. 8, that is, the first sub anti-reflection film 121, the third sub anti-reflection film 123, the second sub anti-reflection film 122 and the fourth sub anti-reflection film 124 may be connected end to end in sequence. At this time, the first sub antireflection film 121, the third sub antireflection film 123, the second sub antireflection film 122, and the fourth sub antireflection film 124 may form a frame-type antireflection structure surrounding the middle region 100, thereby attenuating light leakage at each position of the edge region 200.
Also alternatively, the third subsidiary antireflection film 123 may be provided with a width W in the extending direction perpendicular to the center axis 1 3 (ii) a The fourth sub antireflection film 124 has a width W in the extending direction perpendicular to the central axis 1 4 (ii) a The length of the first side is L 2 Wherein, 0 < W 3 ≤L 2 /3，0＜W 4 ≤L 2 /3。
It should be noted that, in general, the display device has a rectangular shape, two opposite sides of the display device have the same length, and when the first sub antireflection film 121, the second sub antireflection film 122, the third sub antireflection film 123, and the fourth sub antireflection film 124 are provided, the maximum width thereof is preferably not more than one third of the adjacent sides, for example, the maximum width of the first sub antireflection film 121 is preferably not more than one third of the width of the first side 101, so that the influence on the brightness of the intermediate display region can be avoided while effectively covering the light leakage region. For the special-shaped display device, the side lengths of all the edges are complementary and equal, and the setting width of the sub anti-reflection film needs to be reasonably set. Fig. 9 is a top view of still another display device provided by an embodiment of the present invention, and referring to fig. 9, the panel is exemplarily a shaped display device and is curved along a central axis 1. The display device is further provided with a first subsidiary antireflection film 121, a second subsidiary antireflection film 122, a third subsidiary antireflection film 123 and a fourth subsidiary antireflection film 124 in the edge area 200, wherein the first subsidiary antireflection film 121 is located in an area, close to the second edge 102, in the edge area 200, the second subsidiary antireflection film 122 is located in an area, close to the fourth edge 104, in the edge area 200, the third subsidiary antireflection film 123 is located in an area, close to the first edge 101, in the edge area 200, and the fourth subsidiary antireflection film 124 is located in an area, close to the third edge 103, in the edge area 200. The maximum lengths Q1 and Q2 of the first sub anti-reflection film 121 and the second sub anti-reflection film 122 in the direction perpendicular to the central axis 1 should be less than or equal to the maximum length P1 of the display device in the direction perpendicular to the central axis 1, and the maximum lengths Q3 and Q4 of the third sub anti-reflection film 123 and the fourth sub anti-reflection film 124 in the extending direction of the central axis 1 should be less than or equal to the maximum length P2 of the display device in the extending direction of the central axis 1. It can be understood that, on the basis of the above embodiments, when the sub anti-reflection film is disposed in the field, the sub anti-reflection film is disposed by considering an actual light leakage area in the edge area of the special-shaped display device, which is not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.

Claims (10)

1. A display device, comprising a first antireflection film;
a plurality of moth-eye microstructures are arranged in the first antireflection film, and the tops of the moth-eye microstructures face the light emitting side of the display device;
the display device further comprises a middle area and an edge area, the edge area is connected with the edge of the middle area, and the first antireflection film is positioned in the middle area and the edge area;
in the first antireflection film, the arrangement density of the moth eye microstructures in the edge region is greater than that of the moth eye microstructures in the intermediate region; the arrangement density of the moth eye microstructures on the first antireflection film is gradually reduced along the direction from the edge to the center; and the display device comprises a second antireflection film, the second antireflection film being located at the edge region; the second antireflection film is provided with a plurality of moth-eye microstructures, and the tops of the moth-eye microstructures face away from the light emitting side of the display device.
2. The display device according to claim 1, further comprising a liquid crystal display panel and a cover plate arranged in this order along a light exit direction;
the first antireflection film is arranged on the surface of the light-emitting side of the cover plate, or the first antireflection film is arranged between the liquid crystal display panel and the cover plate.
3. The display device according to claim 1, further comprising a backlight module, a liquid crystal display panel and a cover plate sequentially arranged along a light exit direction, wherein the liquid crystal display panel comprises an array substrate adjacent to the backlight module;
the second antireflection film is arranged on the surface of the cover plate, which is far away from the light emitting side, or the second antireflection film is arranged on the surface of the array substrate, which faces the backlight module.
4. The display device according to claim 1, wherein the display device comprises a first side, a second side, a third side and a fourth side which are connected end to end in sequence, the display device is bent around a central axis, and the central axis is parallel to the first side and the third side respectively;
the second antireflection film comprises a first subsidiary antireflection film and a second subsidiary antireflection film, the first subsidiary antireflection film is positioned in the edge area close to the second edge, and the second subsidiary antireflection film is positioned in the edge area close to the fourth edge.
5. The display device according to claim 4, wherein the first subsidiary antireflection film has a width W in the direction in which the central axis extends 1 (ii) a The width of the second subsidiary antireflection film in the extending direction of the central axis is W 2 ；
The length of the first side is L 1 Wherein, 0 < W 1 ≤L 1 /3，0＜W 2 ≤L 1 /3。
6. The display device according to claim 4, wherein the second antireflection film further comprises a third sub antireflection film and a fourth sub antireflection film;
the third sub antireflection film is positioned in the edge area close to the first edge; the fourth subsidiary antireflection film is located in a region close to the third side in the edge region.
7. The display device according to claim 6, wherein the first subsidiary antireflection film, the third subsidiary antireflection film, the second subsidiary antireflection film, and the fourth subsidiary antireflection film are connected end to end in this order.
8. The display device according to claim 6, wherein the third sub antireflection film has a width W in a direction perpendicular to an extending direction of the central axis 3 (ii) a The width of the fourth sub anti-reflection film in the direction perpendicular to the extension direction of the central axis is W 4 ；
The length of the first side is L 2 Wherein, 0 < W 3 ≤L 2 /3，0＜W 4 ≤L 2 /3。
9. The display device according to claim 1, wherein the period C of the moth-eye microstructure is in the range of 100-500 nm; wherein the period C is the distance between the centers of any two adjacent moth eye microstructures.
10. The display device as claimed in claim 1, wherein the moth-eye microstructure has a height H in the range of 100-300 nm.
CN201911369373.5A 2019-12-26 2019-12-26 Display device Active CN110989241B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911369373.5A CN110989241B (en) 2019-12-26 2019-12-26 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911369373.5A CN110989241B (en) 2019-12-26 2019-12-26 Display device

Publications (2)

Publication Number Publication Date
CN110989241A CN110989241A (en) 2020-04-10
CN110989241B true CN110989241B (en) 2022-09-06

Family

ID=70077628

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911369373.5A Active CN110989241B (en) 2019-12-26 2019-12-26 Display device

Country Status (1)

Country Link
CN (1) CN110989241B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114325918B (en) * 2020-09-30 2024-04-23 元太科技工业股份有限公司 Display device and light guide plate
CN112951078A (en) * 2021-01-28 2021-06-11 业成科技（成都）有限公司 Cover plate for display device and manufacturing method thereof
CN113985502A (en) * 2021-10-29 2022-01-28 京东方科技集团股份有限公司 Preparation method of anti-reflection film, anti-reflection film structure and display device
CN114488601A (en) * 2022-01-25 2022-05-13 Tcl华星光电技术有限公司 Display panel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102308329A (en) * 2009-02-10 2012-01-04 夏普株式会社 Display dvice and method of manufacturing the same
US8672493B2 (en) * 2009-03-30 2014-03-18 Sharp Kabushiki Kaisha Display device and optical film
KR101913704B1 (en) * 2012-04-27 2018-11-01 삼성디스플레이 주식회사 Flat panel display device, organic light emitting display device and the method for manufacturing the flat panel display device
KR102267708B1 (en) * 2014-04-04 2021-06-23 삼성디스플레이 주식회사 Display device
JP2015215800A (en) * 2014-05-12 2015-12-03 株式会社ジャパンディスプレイ Portable electronic device
CN104880845A (en) * 2015-06-01 2015-09-02 武汉华星光电技术有限公司 Liquid crystal display module, liquid crystal display and mobile terminal
CN105677098B (en) * 2016-01-05 2018-09-11 京东方科技集团股份有限公司 A kind of touch screen and touch control device
CN107300807A (en) * 2017-06-01 2017-10-27 武汉华星光电技术有限公司 A kind of preparation method of optical element, liquid crystal display module and moth eye micro-structural
CN109841644B (en) * 2017-11-24 2021-07-27 上海和辉光电股份有限公司 Display panel and display device

Also Published As

Publication number Publication date
CN110989241A (en) 2020-04-10

Similar Documents

Publication Publication Date Title
CN110989241B (en) Display device
US10983383B2 (en) Optical film, color filter substrate, manufacturing methods thereof, and display devices
KR102118016B1 (en) Continuous optical film laminate, roll of continuous optical film laminate and IPS liquid crystal display device
WO2010007716A1 (en) Liquid crystal display device
CN108363235B (en) Antireflection film, preparation method thereof, array substrate and display device
TWI459088B (en) Backlight module having a light guide plate with prismatic structures and manufacturing method thereof
US20210215971A1 (en) Polarizer, display panel and display device
KR101822699B1 (en) Optical sheet and liquid crystal display comprising the same
TW201222084A (en) Liquid crystal display
JP6738829B2 (en) Optical laminate including reflective polarizer and compensation film
US20200026124A1 (en) Liquid crystal display panel and manufacturing method for liquid crystal display panel
CN212256275U (en) Touch display module and electronic equipment
JP2017049324A (en) Liquid crystal display and manufacturing method of the same
JP2000075136A (en) Light diffusion polarizing plate
CN109212656B (en) Light guide assembly, backlight module and display device
US10502884B2 (en) Light guide plate, manufacturing method thereof, backlight module and display device
WO2023070922A1 (en) Optical assembly, backlight module and display device
CN110007504A (en) Polarizer screening glass, polarizer and liquid crystal display device
CN111580302B (en) Reflective liquid crystal display panel and display device
US20220004224A1 (en) Viewing angle diffusion plate and display panel
CN114973989A (en) Tiled display panel and tiled display
CN114256312A (en) Display panel and display device
US11061173B2 (en) Prism sheet, prism assembly and display device
US20090290112A1 (en) Display device
KR20190087914A (en) Module for liquid crystal display apparatus and liquid crystal display apparatus comprising the same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant