WO2010024648A1 - Multi-layered video display apparatus - Google Patents
Multi-layered video display apparatus Download PDFInfo
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- WO2010024648A1 WO2010024648A1 PCT/KR2009/004904 KR2009004904W WO2010024648A1 WO 2010024648 A1 WO2010024648 A1 WO 2010024648A1 KR 2009004904 W KR2009004904 W KR 2009004904W WO 2010024648 A1 WO2010024648 A1 WO 2010024648A1
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- liquid crystal
- crystal display
- display device
- diffusion layer
- polarizing plate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/388—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
- H04N13/395—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes
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- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- 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
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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- 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
- G02F1/133504—Diffusing, scattering, diffracting elements
Definitions
- the present invention relates to a multi-layered image display device for implementing a multi-layered image having a depth by overlapping a multi-dimensional two-dimensional image.
- noise interference fringes
- a grain of wood or a wave shape is generated by interference between the superposed liquid crystal display panels.
- Korean Patent Publication No. 10-0614419 (Applicant: Deep Video Imaging Limited, which is a multi-layer display) uses a liquid crystal display panel by disposing a diffuser layer that slightly diffuses light between two liquid crystal display panels. Techniques for removing noise caused by overlapping have been published.
- the present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to provide a multi-layered image display device which is easy to assemble and at the same time removes noise caused by interference between superimposed liquid crystal display panels. will be.
- a multi-layered image display device including a first liquid crystal display panel including a first liquid crystal display panel and a first polarizing plate bonded to upper and lower surfaces of the first liquid crystal display panel, respectively.
- a second liquid crystal display panel disposed under the first liquid crystal display panel so as to overlap the first liquid crystal display panel, and a second polarizing plate adhered to upper and lower surfaces of the second liquid crystal display panel, respectively. It includes a liquid crystal display device.
- the first polarizing plate adhered to a lower surface of the first liquid crystal display panel includes a polarizing film and a diffusion layer formed under the polarizing film and partially diffusing light.
- the multilayer image display device may further include a passivation layer formed on at least one of the polarization layer and the bottom of the diffusion layer.
- a multi-layered image display device includes a first liquid crystal display device including a first liquid crystal display panel and a first polarizing plate adhered to upper and lower surfaces of the first liquid crystal display panel, and the first liquid crystal. And a second liquid crystal display device including a second liquid crystal display panel disposed below the first liquid crystal display panel so as to overlap the display panel, and a second polarizing plate attached to upper and lower surfaces of the second liquid crystal display panel, respectively.
- the second polarizing plate adhered to an upper surface of the second liquid crystal display panel includes a polarizing film and a diffusion layer formed on the flat film and partially diffusing light.
- the multilayer image display device may further include a passivation layer formed under one or more of the polarizer layer and the diffusion layer.
- a multilayer image display device includes a first liquid crystal display device and a second liquid crystal display device disposed under the first liquid crystal display device so as to overlap the first liquid crystal display device in an up and down direction. do.
- At least one of the polarizers attached to the lower surface of the first liquid crystal display and the upper surface of the second liquid crystal display includes a polarizer and a diffusion layer formed on one side of the polarizer and partially diffusing light.
- the multilayer image display device may further include a passivation layer formed below or on the diffusion layer in at least one of the polarizers attached to the bottom surface of the first liquid crystal display and the top surface of the second liquid crystal display.
- the polarizing plate attached to the lower surface of the first liquid crystal display may further include a protective film formed on the polarizing film, and the polarizing plate attached to the upper surface of the second liquid crystal display is a protective film formed below the polarizing film. It may further include.
- the diffusion layer may be formed under the polarizing film of the polarizing plate attached to the lower surface of the first liquid crystal display device. 2
- the diffusion layer may be formed on the polarizing film of the polarizing plate attached to the upper surface of the second liquid crystal display device.
- the diffusion layer is provided in the superimposed polarizing plates of the liquid crystal display, thereby preventing the occurrence of interference fringes due to the interference of different pixel patterns, and in addition to simplifying the assembly process of the multilayer image display device.
- the durability of can be improved.
- FIG. 1 is an exploded perspective view schematically illustrating a multilayer image display device of the present invention.
- FIG. 2 is a diagram illustrating a polarizer of a multilayer image display device according to an exemplary embodiment of the present invention.
- FIG 3 illustrates a polarizer of a multilayer image display device according to another exemplary embodiment.
- FIG. 1 is an exploded perspective view schematically illustrating a multilayer image display device of the present invention
- FIG. 2 is a view illustrating a polarizing plate of a multilayer image display device according to an embodiment of the present invention
- FIG. 3 is a view showing another embodiment of the present invention.
- FIG. 3 is a diagram illustrating a polarizing plate of a multilayer image display device.
- a multilayer image display device includes a first liquid crystal display device 10 and a second liquid crystal display device disposed to overlap each other in the vertical direction. That is, the second liquid crystal display 20 is disposed under the first liquid crystal display 10 so that the first liquid crystal display 10 and the second liquid crystal display 20 may overlap each other when viewed from above. . In this case, the first liquid crystal display 10 and the second liquid crystal display 20 may overlap each other such that the images implemented in the first liquid crystal display 10 and the second liquid crystal display 20 have a predetermined depth. ) May be fixed slightly spaced apart. In the drawing, a frame or the like for fixing the first liquid crystal display 10 and the second liquid crystal display 20 to each other is omitted.
- the first liquid crystal display device 10 and the second liquid crystal display device 20 may be implemented as a known liquid crystal display device, and although not shown in the drawing, the first liquid crystal display device 10 and the second liquid crystal display device ( 20 may include various components for implementing a conventional liquid crystal display such as a backlight unit and an optical sheet. In this case, the first liquid crystal display device 10 is formed to be selectively transparent so that an image implemented in the second liquid crystal display device 20 can be seen from the front side.
- the first liquid crystal display 10 may include a liquid crystal panel 11, and polarizing plates 13 and 15 may be attached to both sides of the liquid crystal panel 11.
- the polarizing plates 13 and 15 may be attached to the upper and lower surfaces of the liquid crystal panel 11 by adhesives or the like, respectively.
- the liquid crystal panel 11 may be implemented with a liquid crystal panel known in the art.
- the liquid crystal panel 11 may include a pair of transparent substrates disposed to face each other, a liquid crystal layer sealed therebetween, and may include various electrodes for driving the liquid crystal layer.
- the second liquid crystal display 20 includes a liquid crystal panel 21 and a pair of polarizing plates 23 and 25 attached to both sides thereof.
- the polarizing plates 23 and 25 may be attached to the upper and lower surfaces of the liquid crystal panel 21 by adhesives or the like, respectively.
- At least one of the polarizing plate 15 attached to the lower surface of the first liquid crystal display device 10 and the polarizing plate 23 attached to the upper surface of the second liquid crystal display device 20 may be formed of light. It may include a diffusion layer that partially diffuses.
- the diffusion layer may be implemented in the form of a conventionally known haze treated film that partially diffuses light.
- interference fringes are formed by different pixel patterns of the two overlapping liquid crystal display devices 10 and 20, and the polarizing plate 15 attached to the lower surface of the first liquid crystal display device 10 and Since at least one of the polarizing plates 23 attached to the upper surface of the second liquid crystal display device 20 includes a diffusion layer that partially diffuses light, the diffusion layer may prevent the interference pattern from being weakened by the pixel pattern.
- FIGS. 2 and 3 a polarizing plate of a multilayer image display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 2 and 3.
- a diffusion layer includes a polarizing plate 15 attached to a lower surface of the first liquid crystal display device 10 disposed above and below the first liquid crystal display device 10 disposed above and below the first liquid crystal display device 10.
- a case involving 19 is shown.
- the polarizing plate 15 may include a polarizing film 16 for performing a polarizing function, and may further include a protective film 17 formed on the polarizing film 16.
- the polarizing film 16 may be formed of polyvinyl alcohol (PVA) having a polarizing function
- the protective films 17 and 18 may be formed of triacetyl cellulose (TAC). Since the polarizing film 16 and the protective films 17 and 18 itself are obvious to those skilled in the art, a detailed description thereof will be omitted.
- the diffusion layer 19 is formed under the polarizing film 16. Accordingly, after the light emitted from the second liquid crystal display 20 is diffused by the diffusion layer 19, the light is passed through the polarizing film 16 and the liquid crystal panel 11 of the first liquid crystal display 10 to form a pixel pattern. Formation of interference fringes due to interference can be prevented.
- the passivation layer 18 may be further provided under the diffusion layer 19. That is, since the diffusion layer 19 can also function as a protective film, the protective film may be omitted below the diffusion layer 19, and the protective film 18 is formed under the diffusion layer 19 to ensure the protective function more. It could be. That is, in FIG. 2, the diffusion layer 19 and the passivation layer 18 are sequentially formed under the polarization layer 16, but the passivation layer 18 under the diffusion layer 19 may be omitted.
- FIG 3 illustrates a polarizing plate 23 attached to an upper surface of the first liquid crystal display device 10 and the second liquid crystal display device 20 disposed up and down. The case of including the diffusion layer 29 is shown.
- the polarizing plate 23 may include a polarizing film 26 for performing a polarizing function, and may further include a protective film 27 disposed under the polarizing film 26.
- the diffusion layer 29 is formed on the polarizing film 26. Accordingly, after the light emitted from the second liquid crystal display device 20 is diffused by the diffusion layer 29 and passes through the first liquid crystal display device 10, it is possible to prevent the formation of an interference fringe due to the interference of the pixel pattern. .
- the passivation layer 28 may be further provided on the diffusion layer 29. That is, since the diffusion layer 29 may also function as a protective film, the protective film may be omitted on the diffusion layer 29, or the protective film 28 may be formed on the diffusion layer 29 to ensure the protective function. It is. That is, in FIG. 3, the diffusion layer 29 and the passivation layer 28 are sequentially formed on the polarization layer 26, but the passivation layer 28 on the diffusion layer 29 may be omitted.
- both the polarizing plate 15 attached to the lower surface of the first liquid crystal display device 10 and the polarizing plate 23 attached to the upper surface of the second liquid crystal display device 20 are A diffusion layer may be provided.
- diffusion layers 19 and 29 for preventing generation of interference fringes due to interference between the superposed liquid crystal display devices 10 and 20 are provided in the polarizing plates 15 and 23 of the liquid crystal display devices 10 and 20.
- the assembly process of the product may be much simpler than the conventional technology of inserting the diffusion layer between two liquid crystal display devices, and the durability of the product may be improved.
- the present invention relates to a multi-layered image display device, which is applicable to the display industry and the like, and has industrial applicability.
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Abstract
The present invention relates to a multi-layered video display for realizing multi-layered images having depth by overlapping multi-layered 2D images. The multi-layered video display apparatus comprises a first liquid crystal display apparatus and a second liquid crystal display apparatus placed below said first liquid crystal display apparatus so that it can overlap with said first liquid crystal display apparatus both upward and downward. At least one of the polarizing plates that are attached to the bottom of said first liquid crystal display and the top of said second liquid crystal display is a polarizing film, and a diffusion layer is included that is formed on another side of said polarizing film to partially diffuse light. When a diffusion layer is furnished in the polarizing plate of the overlapped liquid crystal display, the generation of an interference pattern by the interference of different pixel patterns can be prevented, and furthermore the assembly process of the multi-layered video display becomes very simple and product durability is enhanced.
Description
본 발명은 다층의 이차원 이미지를 중첩하여 깊이를 가지는 다층 이미지를 구현하기 위한 다층 영상 표시 장치에 관한 것이다.The present invention relates to a multi-layered image display device for implementing a multi-layered image having a depth by overlapping a multi-dimensional two-dimensional image.
종래에 깊이를 가지는 다층 이미지를 구현하기 위해 복수의 액정 디스플레이(Liquid Crystal Display, LCD) 패널을 중첩하는 방식이 소개된 바 있다.In the related art, a method of overlapping a plurality of liquid crystal display (LCD) panels has been introduced to implement a multilayer image having a depth.
이 경우 중첩된 액정 디스플레이 패널 사이의 간섭에 의해 나무결 모양이나 물결 모양 등의 노이즈(간섭 무늬)가 발생하는 문제점이 있다.In this case, there is a problem in that noise (interference fringes) such as a grain of wood or a wave shape is generated by interference between the superposed liquid crystal display panels.
이와 같은 노이즈의 발생을 방지하기 위한 기술이 알려진 바 있다. 예를 들어, 대한민국 등록특허공보 제 10-0614419호(출원인: 딥 비디오 이미징 리미티드, 명칭: 다층 디스플레이)에서는 두 개의 액정 디스플레이 패널 사이에 광을 약간 확산하는 확산층(diffuse layer)을 배치함으로써 액정 디스플레이 패널의 중첩에 의해 발생하는 노이즈를 제거하는 기술이 게시되었다.There is a known technique for preventing the occurrence of such noise. For example, Korean Patent Publication No. 10-0614419 (Applicant: Deep Video Imaging Limited, which is a multi-layer display) uses a liquid crystal display panel by disposing a diffuser layer that slightly diffuses light between two liquid crystal display panels. Techniques for removing noise caused by overlapping have been published.
그러나 두 개의 액정 디스플레이 패널 사이에 확산층을 배치하는 경우 두 개의 액정 디스플레이 패널 사이에 확산층을 배치한 후 조립하는 과정이 필요하므로, 조립 과정이 번거롭고 생산성이 저하되는 문제가 있다.However, when dispersing layers are disposed between two liquid crystal display panels, a process of assembling the dispersing layers between the two liquid crystal display panels is required, and thus, the assembly process is cumbersome and productivity is lowered.
본 발명은 전술한 바와 같은 문제점들을 해결하기 위해 창출된 것으로서, 본 발명이 해결하고자 하는 과제는 중첩된 액정 디스플레이 패널 사이의 간섭에 의한 노이즈를 제거함과 동시에 조립이 용이한 다층 영상 표시 장치를 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to provide a multi-layered image display device which is easy to assemble and at the same time removes noise caused by interference between superimposed liquid crystal display panels. will be.
상기한 과제를 달성하기 위한 본 발명의 한 실시예에 따른 다층 영상 표시 장치는 제1 액정 디스플레이 패널과 상기 제1 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제1 편광판을 포함하는 제1 액정 표시 장치, 그리고 상기 제1 액정 디스플레이 패널과 중첩되도록 상기 제1 액정 디스플레이 패널 아래에 배치되는 제2 액정 디스플레이 패널과 상기 제2 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제2 편광판을 포함하는 제2 액정 표시 장치를 포함한다. 상기 제1 액정 디스플레이 패널의 하면에 접착되는 상기 제1 편광판은, 편광막, 그리고 상기 편광막 아래에 형성되며 광을 부분적으로 확산하는 확산층을 포함한다.According to an aspect of the present invention, there is provided a multi-layered image display device including a first liquid crystal display panel including a first liquid crystal display panel and a first polarizing plate bonded to upper and lower surfaces of the first liquid crystal display panel, respectively. A second liquid crystal display panel disposed under the first liquid crystal display panel so as to overlap the first liquid crystal display panel, and a second polarizing plate adhered to upper and lower surfaces of the second liquid crystal display panel, respectively. It includes a liquid crystal display device. The first polarizing plate adhered to a lower surface of the first liquid crystal display panel includes a polarizing film and a diffusion layer formed under the polarizing film and partially diffusing light.
한편, 다층 영상 표시 장치는 상기 편광막의 위 및 상기 확산층의 아래 중 하나 이상에 형성되는 보호막을 더 포함할 수 있다.The multilayer image display device may further include a passivation layer formed on at least one of the polarization layer and the bottom of the diffusion layer.
본 발명의 다른 실시예에 따른 다층 영상 표시 장치는 제1 액정 디스플레이 패널과 상기 제1 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제1 편광판을 포함하는 제1 액정 표시 장치, 그리고 상기 제1 액정 디스플레이 패널과 중첩되도록 상기 제1 액정 디스플레이 패널 아래에 배치되는 제2 액정 디스플레이 패널과 상기 제2 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제2 편광판을 포함하는 제2 액정 표시 장치를 포함한다. 상기 제2 액정 디스플레이 패널의 상면에 접착되는 상기 제2 편광판은, 편광막, 그리고 상기 평광막 위에 형성되며 광을 부분적으로 확산하는 확산층을 포함한다.A multi-layered image display device according to another embodiment of the present invention includes a first liquid crystal display device including a first liquid crystal display panel and a first polarizing plate adhered to upper and lower surfaces of the first liquid crystal display panel, and the first liquid crystal. And a second liquid crystal display device including a second liquid crystal display panel disposed below the first liquid crystal display panel so as to overlap the display panel, and a second polarizing plate attached to upper and lower surfaces of the second liquid crystal display panel, respectively. The second polarizing plate adhered to an upper surface of the second liquid crystal display panel includes a polarizing film and a diffusion layer formed on the flat film and partially diffusing light.
한편, 다층 영상 표시 장치는 상기 편광막의 아래 및 상기 확산층 위 중 하나 이상에 형성되는 보호막을 더 포함할 수 있다.The multilayer image display device may further include a passivation layer formed under one or more of the polarizer layer and the diffusion layer.
본 발명의 다른 실시예에 따른 다층 영상 표시 장치는, 제1 액정 표시 장치와 상기 제1 액정 표시 장치와 상하 방향으로 중첩되도록 상기 제1 액정 표시 장치의 아래에 배치되는 제2 액정 표시 장치를 포함한다. 상기 제1 액정 표시 장치의 아래 면과 상기 제2 액정 표시 장치의 위 면에 부착되는 편광판 중 하나 이상은 편광막, 그리고 상기 편광막의 일측에 형성되며 광을 부분적으로 확산하는 확산층을 포함한다.A multilayer image display device according to another exemplary embodiment of the present invention includes a first liquid crystal display device and a second liquid crystal display device disposed under the first liquid crystal display device so as to overlap the first liquid crystal display device in an up and down direction. do. At least one of the polarizers attached to the lower surface of the first liquid crystal display and the upper surface of the second liquid crystal display includes a polarizer and a diffusion layer formed on one side of the polarizer and partially diffusing light.
한편, 다층 영상 표시 장치는 상기 제1 액정 표시 장치의 아래 면과 상기 제2 액정 표시 장치의 위 면에 부착되는 편광판 중 하나 이상은 상기 확산층의 아래 또는 위에 형성되는 보호막을 더 포함할 수 있다.Meanwhile, the multilayer image display device may further include a passivation layer formed below or on the diffusion layer in at least one of the polarizers attached to the bottom surface of the first liquid crystal display and the top surface of the second liquid crystal display.
상기 제1 액정 표시 장치의 아래 면에 부착되는 편광판은 상기 편광막의 위에 형성되는 보호막을 더 포함할 수 있고, 상기 제2 액정 표시 장치의 위 면에 부착되는 편광판은 상기 편광막의 아래에 형성되는 보호막을 더 포함할 수 있다.The polarizing plate attached to the lower surface of the first liquid crystal display may further include a protective film formed on the polarizing film, and the polarizing plate attached to the upper surface of the second liquid crystal display is a protective film formed below the polarizing film. It may further include.
상기 제1 액정 표시 장치의 아래 면에 부착되는 편광판이 상기 확산층을 구비하는 경우 상기 확산층은 상기 제1 액정 표시 장치의 아래 면에 부착되는 상기 편광판의 상기 편광막의 아래에 형성될 수 있고, 상기 제2 액정 표시 장치의 위 면에 부착되는 편광판이 상기 확산층을 구비하는 경우 상기 확산층은 상기 제2 액정 표시 장치의 위 면에 부착되는 상기 편광판의 상기 편광막의 위에 형성될 수 있다.When the polarizing plate attached to the lower surface of the first liquid crystal display device includes the diffusion layer, the diffusion layer may be formed under the polarizing film of the polarizing plate attached to the lower surface of the first liquid crystal display device. 2 When the polarizing plate attached to the upper surface of the liquid crystal display device includes the diffusion layer, the diffusion layer may be formed on the polarizing film of the polarizing plate attached to the upper surface of the second liquid crystal display device.
본 발명에 의하면, 중첩된 액정 표시 장치의 편광판 내에 확산층이 구비됨으로써, 상이한 픽셀 패턴의 간섭에 의한 간섭 무늬의 발생을 방지할 수 있으며 이와 더불어 다층 영상 표시 장치의 조립 공정이 매우 간단해질 뿐만 아니라 제품의 내구성이 향상될 수 있다.According to the present invention, the diffusion layer is provided in the superimposed polarizing plates of the liquid crystal display, thereby preventing the occurrence of interference fringes due to the interference of different pixel patterns, and in addition to simplifying the assembly process of the multilayer image display device. The durability of can be improved.
도 1은 본 발명의 다층 영상 표시 장치를 개략적으로 보여주는 분해 사시도이다.1 is an exploded perspective view schematically illustrating a multilayer image display device of the present invention.
도 2는 본 발명의 한 실시예에 따른 다층 영상 표시 장치의 편광판을 보여주는 도면이다.2 is a diagram illustrating a polarizer of a multilayer image display device according to an exemplary embodiment of the present invention.
도 3은 본 발명의 다른 실시예에 따른 다층 영상 표시 장치의 편광판을 보여주는 도면이다.3 illustrates a polarizer of a multilayer image display device according to another exemplary embodiment.
이하에서 본 발명의 실시예를 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도면에서 여러 층 및 영역을 명확하게 표현하기 위하여 두께를 확대하여 나타내었다. 명세서 전체를 통하여 유사한 부분에 대해서는 동일한 도면 부호를 붙였다. 층이나 막 등의 부분이 다른 부분 "위에" 또는 "아래에" 있다고 할 때, 이는 다른 부분 "바로 위에" 또는 "바로 아래에" 있는 경우뿐 아니라 그 중간에 또 다른 부분이 있는 경우도 포함한다. 반대로 어떤 부분이 다른 부분 "바로 위에" 또는 "바로 아래에" 있다고 할 때에는 중간에 다른 부분이 없는 것을 뜻한다.In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Like parts are designated by like reference numerals throughout the specification. When a part such as a layer or film is said to be "on" or "below" another part, this includes not only the other part "directly above" or "directly below" but also another part in the middle. . On the contrary, when a part is "directly above" or "directly below" another part, there is no other part in the middle.
도 1은 본 발명의 다층 영상 표시 장치를 개략적으로 보여주는 분해 사시도이고, 도 2는 본 발명의 한 실시예에 따른 다층 영상 표시 장치의 편광판을 보여주는 도면이며, 도 3은 본 발명의 다른 실시예에 따른 다층 영상 표시 장치의 편광판을 보여주는 도면이다.1 is an exploded perspective view schematically illustrating a multilayer image display device of the present invention, FIG. 2 is a view illustrating a polarizing plate of a multilayer image display device according to an embodiment of the present invention, and FIG. 3 is a view showing another embodiment of the present invention. FIG. 3 is a diagram illustrating a polarizing plate of a multilayer image display device.
먼저, 도 1을 참조하면, 본 발명의 실시예에 따른 다층 영상 표시 장치는 상하 방향으로 중첩되도록 배치되는 제1 액정 표시 장치(10)와 제2 액정 표시 장치를 포함한다. 즉, 제 1 액정 표시 장치(10)와 제2 액정 표시 장치(20)는 위에서 볼 때 서로 포개져 보이도록 제1 액정 표시 장치(10)의 아래에 제2 액정 표시 장치(20)가 배치된다. 이때, 제1 액정 표시 장치(10)와 제2 액정 표시 장치(20)에서 구현된 영상이 미리 설정된 깊이를 가지도록 서로 중첩되도록, 제1 액정 표시 장치(10)와 제2 액정 표시 장치(20)는 약간 이격된 상태로 고정될 수 있다. 도면에는 제1 액정 표시 장치(10)와 제2 액정 표시 장치(20)를 서로 고정하는 프레임(frame) 등은 생략되었다.First, referring to FIG. 1, a multilayer image display device according to an exemplary embodiment of the present invention includes a first liquid crystal display device 10 and a second liquid crystal display device disposed to overlap each other in the vertical direction. That is, the second liquid crystal display 20 is disposed under the first liquid crystal display 10 so that the first liquid crystal display 10 and the second liquid crystal display 20 may overlap each other when viewed from above. . In this case, the first liquid crystal display 10 and the second liquid crystal display 20 may overlap each other such that the images implemented in the first liquid crystal display 10 and the second liquid crystal display 20 have a predetermined depth. ) May be fixed slightly spaced apart. In the drawing, a frame or the like for fixing the first liquid crystal display 10 and the second liquid crystal display 20 to each other is omitted.
제1 액정 표시 장치(10)와 제2 액정 표시 장치(20)는 기존에 알려진 액정 표시 장치로 구현될 수 있으며, 도면에는 도시되지 않았으나 제1 액정 표시 장치(10)와 제2 액정 표시 장치(20)는 백라이트 유닛(backlight unit), 광학 시트 등 통상의 액정 표시 장치를 구현하기 위한 각종 부품들을 포함할 수 있다. 이때, 제1 액정 표시 장치(10)는 아래에 있는 제2 액정 표시 장치(20)에서 구현된 영상이 전면에서 보일 수 있도록 선택적으로 투명한 상태가 될 수 있도록 형성된다.The first liquid crystal display device 10 and the second liquid crystal display device 20 may be implemented as a known liquid crystal display device, and although not shown in the drawing, the first liquid crystal display device 10 and the second liquid crystal display device ( 20 may include various components for implementing a conventional liquid crystal display such as a backlight unit and an optical sheet. In this case, the first liquid crystal display device 10 is formed to be selectively transparent so that an image implemented in the second liquid crystal display device 20 can be seen from the front side.
제1 액정 표시 장치(10)는 액정 패널(11)을 포함하며, 편광판(13, 15)이 액정 패널(11)의 양측에 부착될 수 있다. 이때, 편광판(13, 15)은 액정 패널(11)의 위 면과 아래 면에 접착제 등에 의해 각각 부착될 수 있다.The first liquid crystal display 10 may include a liquid crystal panel 11, and polarizing plates 13 and 15 may be attached to both sides of the liquid crystal panel 11. In this case, the polarizing plates 13 and 15 may be attached to the upper and lower surfaces of the liquid crystal panel 11 by adhesives or the like, respectively.
액정 패널(11)은 종래에 알려진 액정 패널로 구현될 수 있다. 예를 들어, 액정 패널(11)은 서로 마주하도록 배치되는 한 쌍의 투명한 기판과 그 사이에 밀봉되는 액정층을 포함할 수 있으며, 액정층을 구동하기 위한 각종 전극을 포함할 수 있다.The liquid crystal panel 11 may be implemented with a liquid crystal panel known in the art. For example, the liquid crystal panel 11 may include a pair of transparent substrates disposed to face each other, a liquid crystal layer sealed therebetween, and may include various electrodes for driving the liquid crystal layer.
유사하게, 제2 액정 표시 장치(20)는 액정 패널(21)과 그 양측에 부착되는 한 쌍의 편광판(23, 25)을 포함한다. 이때, 편광판(23, 25)은 액정 패널(21)의 위 면과 아래 면에 접착제 등에 의해 각각 부착될 수 있다.Similarly, the second liquid crystal display 20 includes a liquid crystal panel 21 and a pair of polarizing plates 23 and 25 attached to both sides thereof. In this case, the polarizing plates 23 and 25 may be attached to the upper and lower surfaces of the liquid crystal panel 21 by adhesives or the like, respectively.
본 발명의 실시예에 따르면, 제1 액정 표시 장치(10)의 아래 면에 부착되는 편광판(15)과 제2 액정 표시 장치(20)의 위 면에 부착되는 편광판(23) 중 하나 이상은 광을 부분적으로 확산하는 확산층을 포함할 수 있다.According to an embodiment of the present invention, at least one of the polarizing plate 15 attached to the lower surface of the first liquid crystal display device 10 and the polarizing plate 23 attached to the upper surface of the second liquid crystal display device 20 may be formed of light. It may include a diffusion layer that partially diffuses.
예를 들어, 확산층은 광을 부분적으로 확산하는 종래에 알려진 헤이즈(haze) 처리된 필름 형태로 구현될 수 있다.For example, the diffusion layer may be implemented in the form of a conventionally known haze treated film that partially diffuses light.
확산층이 없다면 중첩된 두 개의 액정 표시 장치(10, 20)의 상이한 픽셀 패턴(pixel pattern)에 의해 간섭 무늬가 생기게 되는데, 제1 액정 표시 장치(10)의 아래 면에 부착되는 편광판(15)과 제2 액정 표시 장치(20)의 위 면에 부착되는 편광판(23) 중 하나 이상이 광을 부분적으로 확산하는 확산층을 구비함으로써 확산층이 픽셀 패턴을 약화시켜 간섭 무늬가 생기는 것을 방지할 수 있다.Without the diffusion layer, interference fringes are formed by different pixel patterns of the two overlapping liquid crystal display devices 10 and 20, and the polarizing plate 15 attached to the lower surface of the first liquid crystal display device 10 and Since at least one of the polarizing plates 23 attached to the upper surface of the second liquid crystal display device 20 includes a diffusion layer that partially diffuses light, the diffusion layer may prevent the interference pattern from being weakened by the pixel pattern.
이하에서, 첨부된 도 2 및 도 3을 참조하여 본 발명의 실시예에 따른 다층 영상 표시 장치의 편광판에 대해서 설명한다.Hereinafter, a polarizing plate of a multilayer image display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 2 and 3.
먼저, 도 2에는 상하로 배치되는 제1 액정 표시 장치(10)와 제2 액정 표시 장치(20) 중 위에 배치되는 제1 액정 표시 장치(10)의 아래 면에 부착되는 편광판(15)이 확산층(19)을 포함하는 경우가 도시되어 있다.First, in FIG. 2, a diffusion layer includes a polarizing plate 15 attached to a lower surface of the first liquid crystal display device 10 disposed above and below the first liquid crystal display device 10 disposed above and below the first liquid crystal display device 10. A case involving 19 is shown.
편광판(15)은 편광 기능을 수행하기 위한 편광막(16)을 구비하며, 편광막(16) 위에 형성되는 보호막(17)을 더 포함할 수 있다.The polarizing plate 15 may include a polarizing film 16 for performing a polarizing function, and may further include a protective film 17 formed on the polarizing film 16.
예를 들어, 편광막(16)은 편광 기능을 가지는 폴리비닐알콜(PVA) 등으로 형성될 수 있으며, 보호막(17, 18)은 트리아세틸 셀룰로즈(TAC) 등으로 형성될 수 있다. 이와 같은 편광막(16)과 보호막(17, 18) 그 자체는 본 발명이 속하는 기술분야의 통상의 지식을 가진 자에게 자명하므로 이에 대한 더욱 상세한 설명은 생략한다.For example, the polarizing film 16 may be formed of polyvinyl alcohol (PVA) having a polarizing function, and the protective films 17 and 18 may be formed of triacetyl cellulose (TAC). Since the polarizing film 16 and the protective films 17 and 18 itself are obvious to those skilled in the art, a detailed description thereof will be omitted.
이때, 확산층(19)은 편광막(16)의 아래에 형성된다. 이에 따라 제2 액정 표시 장치(20)에서 발산된 빛이 확산층(19)에 의해 확산된 후 제1 액정 표시 장치(10)의 편광막(16)과 액정 패널(11)을 통과함으로써 픽셀 패턴의 간섭에 의한 간섭 무늬의 형성을 방지할 수 있다.At this time, the diffusion layer 19 is formed under the polarizing film 16. Accordingly, after the light emitted from the second liquid crystal display 20 is diffused by the diffusion layer 19, the light is passed through the polarizing film 16 and the liquid crystal panel 11 of the first liquid crystal display 10 to form a pixel pattern. Formation of interference fringes due to interference can be prevented.
한편, 본 발명의 다른 실시예에 따르면, 확산층(19)의 아래에 보호막(18)이 더 구비될 수 있다. 즉, 확산층(19)이 보호막의 기능도 함께 수행할 수 있으므로, 확산층(19) 아래에 보호막이 생략될 수도 있고, 보호 기능을 보다 확실하게 하기 위해 확산층(19) 아래에 보호막(18)이 형성될 수도 있는 것이다. 즉, 도 2에는 편광막(16) 아래에 확산층(19)과 보호막(18)이 차례로 형성되어 있는 경우가 도시되어 있으나, 확산층(19) 아래에 있는 보호막(18)은 생략될 수 있다.Meanwhile, according to another exemplary embodiment of the present invention, the passivation layer 18 may be further provided under the diffusion layer 19. That is, since the diffusion layer 19 can also function as a protective film, the protective film may be omitted below the diffusion layer 19, and the protective film 18 is formed under the diffusion layer 19 to ensure the protective function more. It could be. That is, in FIG. 2, the diffusion layer 19 and the passivation layer 18 are sequentially formed under the polarization layer 16, but the passivation layer 18 under the diffusion layer 19 may be omitted.
한편, 도 3에는 상하로 배치되는 제1 액정 표시 장치(10)와 제2 액정 표시 장치(20) 중 아래에 배치되는 제2 액정 표시 장치(20)의 위 면에 부착되는 편광판(23)이 확산층(29)을 포함하는 경우가 도시되어 있다.3 illustrates a polarizing plate 23 attached to an upper surface of the first liquid crystal display device 10 and the second liquid crystal display device 20 disposed up and down. The case of including the diffusion layer 29 is shown.
편광판(23)은 편광 기능을 수행하기 위한 편광막(26)을 구비하며, 편광막(26) 아래에 배치되는 보호막(27)을 더 포함할 수 있다.The polarizing plate 23 may include a polarizing film 26 for performing a polarizing function, and may further include a protective film 27 disposed under the polarizing film 26.
이때, 확산층(29)은 편광막(26)의 위에 형성된다. 이에 따라 제2 액정 표시 장치(20)에서 발산된 빛이 확산층(29)에 의해 확산된 후 제1 액정 표시 장치(10)를 통과함으로써 픽셀 패턴의 간섭에 의한 간섭 무늬의 형성을 방지할 수 있다.At this time, the diffusion layer 29 is formed on the polarizing film 26. Accordingly, after the light emitted from the second liquid crystal display device 20 is diffused by the diffusion layer 29 and passes through the first liquid crystal display device 10, it is possible to prevent the formation of an interference fringe due to the interference of the pixel pattern. .
한편, 본 발명의 다른 실시예에 따르면, 확산층(29)의 위에 보호막(28)이 더 구비될 수 있다. 즉, 확산층(29)이 보호막의 기능도 함께 수행할 수 있으므로, 확산층(29) 위에 보호막이 생략될 수도 있고, 보호 기능을 보다 확실하게 하기 위해 확산층(29) 위에 보호막(28)이 형성될 수도 있는 것이다. 즉, 도 3에는 편광막(26) 위에 확산층(29)과 보호막(28)이 차례로 형성되어 있는 경우가 도시되어 있으나, 확산층(29) 위에 있는 보호막(28)은 생략될 수 있다.Meanwhile, according to another exemplary embodiment of the present invention, the passivation layer 28 may be further provided on the diffusion layer 29. That is, since the diffusion layer 29 may also function as a protective film, the protective film may be omitted on the diffusion layer 29, or the protective film 28 may be formed on the diffusion layer 29 to ensure the protective function. It is. That is, in FIG. 3, the diffusion layer 29 and the passivation layer 28 are sequentially formed on the polarization layer 26, but the passivation layer 28 on the diffusion layer 29 may be omitted.
한편, 본 발명의 또 다른 실시예에 따르면 제1 액정 표시 장치(10)의 아래 면에 부착되는 편광판(15)과 제2 액정 표시 장치(20)의 위 면에 부착되는 편광판(23) 모두가 확산층을 구비할 수도 있다.Meanwhile, according to another embodiment of the present invention, both the polarizing plate 15 attached to the lower surface of the first liquid crystal display device 10 and the polarizing plate 23 attached to the upper surface of the second liquid crystal display device 20 are A diffusion layer may be provided.
본 발명에 따르면 중첩된 액정 표시 장치(10, 20) 사이의 간섭에 의한 간섭 무늬의 발생을 방지하기 위한 확산층(19, 29)이 액정 표시 장치(10, 20)의 편광판(15, 23) 내에 구비됨으로써, 두 개의 액정 표시 장치 사이에 확산층을 삽입하는 종래의 기술에 비해 제품 조립 과정이 매우 간단해질 뿐만 아니라 제품의 내구성이 향상될 수 있다.According to the present invention, diffusion layers 19 and 29 for preventing generation of interference fringes due to interference between the superposed liquid crystal display devices 10 and 20 are provided in the polarizing plates 15 and 23 of the liquid crystal display devices 10 and 20. As a result, the assembly process of the product may be much simpler than the conventional technology of inserting the diffusion layer between two liquid crystal display devices, and the durability of the product may be improved.
이상에서 본 발명의 실시예를 설명하였으나, 본 발명의 권리범위는 이에 한정되지 아니하며 본 발명의 실시예로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 용이하게 변경되어 균등한 것으로 인정되는 범위의 모든 변경 및 수정을 포함한다.Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it is recognized that the present invention is easily changed and equivalent by those skilled in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.
본 발명은 다층 영상 표시 장치에 관한 것으로 디스플레이 산업 등에 적용 가능하여 산업상 이용가능성이 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layered image display device, which is applicable to the display industry and the like, and has industrial applicability.
Claims (8)
- 제1 액정 디스플레이 패널과 상기 제1 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제1 편광판을 포함하는 제1 액정 표시 장치, 그리고A first liquid crystal display device including a first liquid crystal display panel and a first polarizing plate bonded to upper and lower surfaces of the first liquid crystal display panel, respectively; and상기 제1 액정 디스플레이 패널과 중첩되도록 상기 제1 액정 디스플레이 패널 아래에 배치되는 제2 액정 디스플레이 패널과 상기 제2 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제2 편광판을 포함하는 제2 액정 표시 장치를 포함하며,A second liquid crystal display device including a second liquid crystal display panel disposed below the first liquid crystal display panel so as to overlap the first liquid crystal display panel, and a second polarizing plate attached to upper and lower surfaces of the second liquid crystal display panel, respectively; Including;상기 제1 액정 디스플레이 패널의 하면에 접착되는 상기 제1 편광판은The first polarizer is bonded to the lower surface of the first liquid crystal display panel편광막, 그리고Polarizing film, and상기 편광막 아래에 형성되며 광을 부분적으로 확산하는 확산층을 포함하는 다층 영상 표시 장치.And a diffusion layer formed under the polarizer and partially diffusing light.
- 제1항에서,In claim 1,상기 편광막 위와 상기 확산층의 아래 중 하나 이상에 형성되는 보호막을 더 포함하는 다층 영상 표시 장치.And a protective film formed on at least one of the polarizer film and the bottom of the diffusion layer.
- 제1 액정 디스플레이 패널과 상기 제1 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제1 편광판을 포함하는 제1 액정 표시 장치, 그리고A first liquid crystal display device including a first liquid crystal display panel and a first polarizing plate bonded to upper and lower surfaces of the first liquid crystal display panel, respectively; and상기 제1 액정 디스플레이 패널과 중첩되도록 상기 제1 액정 디스플레이 패널 아래에 배치되는 제2 액정 디스플레이 패널과 상기 제2 액정 디스플레이 패널의 상면과 하면에 각각 접착되는 제2 편광판을 포함하는 제2 액정 표시 장치를 포함하며,A second liquid crystal display device including a second liquid crystal display panel disposed below the first liquid crystal display panel so as to overlap the first liquid crystal display panel, and a second polarizing plate attached to upper and lower surfaces of the second liquid crystal display panel, respectively; Including;상기 제2 액정 디스플레이 패널의 상면에 접착되는 상기 제2 편광판은The second polarizing plate adhered to an upper surface of the second liquid crystal display panel편광막, 그리고Polarizing film, and상기 평광막 위에 형성되며 광을 부분적으로 확산하는 확산층을 포함하는 다층 영상 표시 장치.And a diffusion layer formed on the planar film and partially diffusing light.
- 제3항에서,In claim 3,상기 편광막의 아래와 상기 확산층 위 중 하나 이상에 형성되는 보호막을 더 포함하는 다층 영상 표시 장치.And a passivation layer formed on at least one of the polarizing layer and the diffusion layer.
- 제1 액정 표시 장치와 상기 제1 액정 표시 장치와 상하 방향으로 중첩되도록 상기 제1 액정 표시 장치의 아래에 배치되는 제2 액정 표시 장치를 포함하며,A second liquid crystal display device disposed below the first liquid crystal display device so as to overlap a first liquid crystal display device and the first liquid crystal display device in a vertical direction;상기 제1 액정 표시 장치의 아래 면과 상기 제2 액정 표시 장치의 위 면에 부착되는 편광판 중 하나 이상은 편광막, 그리고 상기 편광막의 일측에 형성되며 광을 부분적으로 확산하는 확산층을 포함하는 다층 영상 표시 장치.At least one of the polarizers attached to the lower surface of the first liquid crystal display and the upper surface of the second liquid crystal display includes a polarizing film and a diffusion layer formed on one side of the polarizing film and partially diffusing light. Display device.
- 제5항에서,In claim 5,상기 제1 액정 표시 장치의 아래 면과 상기 제2 액정 표시 장치의 위 면에 부착되는 편광판 중 하나 이상은 상기 확산층의 아래 또는 위에 형성되는 보호막을 더 포함하는 다층 영상 표시 장치.And at least one of a polarizer attached to a lower surface of the first liquid crystal display and an upper surface of the second liquid crystal display further comprises a protective film formed below or on the diffusion layer.
- 제5항에서,In claim 5,상기 제1 액정 표시 장치의 아래 면에 부착되는 편광판은 상기 편광막의 위에 형성되는 보호막을 더 포함하고,The polarizing plate attached to the bottom surface of the first liquid crystal display device further includes a protective film formed on the polarizing film,상기 제2 액정 표시 장치의 위 면에 부착되는 편광판은 상기 편광막의 아래에 형성되는 보호막을 더 포함하는 다층 영상 표시 장치.The polarizing plate attached to the upper surface of the second liquid crystal display further comprises a protective film formed under the polarizing film.
- 제5항 내지 제7항 중 어느 한 항에서,The method according to any one of claims 5 to 7,상기 제1 액정 표시 장치의 아래 면에 부착되는 편광판이 상기 확산층을 구비하는 경우 상기 확산층은 상기 제1 액정 표시 장치의 아래 면에 부착되는 상기 편광판의 상기 편광막의 아래에 형성되고,When the polarizing plate attached to the lower surface of the first liquid crystal display device includes the diffusion layer, the diffusion layer is formed under the polarizing film of the polarizing plate attached to the lower surface of the first liquid crystal display device,상기 제2 액정 표시 장치의 위 면에 부착되는 편광판이 상기 확산층을 구비하는 경우 상기 확산층은 상기 제2 액정 표시 장치의 위 면에 부착되는 상기 편광판의 상기 편광막의 위에 형성되는 다층 영상 표시 장치.And the diffusing layer is formed on the polarizing film of the polarizing plate attached to the upper surface of the second liquid crystal display when the polarizing plate attached to the upper surface of the second liquid crystal display device includes the diffusion layer.
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CN111999948A (en) * | 2020-09-02 | 2020-11-27 | 上海中航光电子有限公司 | Display panel and display device |
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