WO2018098905A1 - 显示屏及虚拟现实头盔 - Google Patents

显示屏及虚拟现实头盔 Download PDF

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Publication number
WO2018098905A1
WO2018098905A1 PCT/CN2017/073985 CN2017073985W WO2018098905A1 WO 2018098905 A1 WO2018098905 A1 WO 2018098905A1 CN 2017073985 W CN2017073985 W CN 2017073985W WO 2018098905 A1 WO2018098905 A1 WO 2018098905A1
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WO
WIPO (PCT)
Prior art keywords
display screen
light
display
disposed
diffusion film
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PCT/CN2017/073985
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English (en)
French (fr)
Inventor
李炜
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深圳市掌网科技股份有限公司
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Publication of WO2018098905A1 publication Critical patent/WO2018098905A1/zh

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal 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
    • 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

Definitions

  • the present invention relates to the field of virtual reality technologies, and in particular, to a display screen and a virtual reality helmet.
  • the LCD picture is a transmissive imaging principle.
  • the liquid crystal itself does not emit light. All the light is from the light source behind the liquid crystal panel.
  • the liquid crystal molecules have a peculiar function of allowing the light to change its original direction. The light can be transmitted through the liquid crystal layer.
  • the intensity of light Since the liquid crystal itself has no color, a color filter film is added in the direction in which the liquid crystal is emitted, and there are many red, green and blue primary color pixels on the film.
  • the light is controlled by the liquid crystal molecules, and the light intensity through each pixel unit is also different. The three primary colors are mixed to obtain the color we need.
  • the respective pixel units are often separated by a light shielding unit, and the light shielding units of the respective pixel units are connected to form a light shielding matrix of the entire screen, that is, a light shielding layer. Since the light shielding layer between each pixel always has a certain width, if the liquid crystal display is enlarged, one pixel square can be clearly seen.
  • a single pixel grid is not easy to observe, but many of these pixels are superimposed and can be easily perceived by human eyes under certain lighting conditions. This perceived pixel, in the eyes of ordinary consumers, thinks that the display has a grain effect.
  • a head-mounted display includes a display screen and an optical system.
  • the display screen receives screen data sent after being processed by a computer system to perform screen display, and the optical system enlarges the screen displayed on the display screen, and the human eye observes the optical image.
  • the enlarged display of the system For normal pixel density displays at normal usage distances, the human eye does not discern the light-shielding layer between individual pixels.
  • the head-mounted display is relatively close to the human eye, and the picture usually needs to be enlarged by the optical system to enter the human eye, the light-shielding layer between the pixels of the display screen of the conventional pixel density is easily displayed, so that the display observed by the human eye is made.
  • the image has a stronger particle effect.
  • the present invention provides a display screen and a virtual reality helmet, which can weaken the optical performance of the boundary layer of the pixel unit, and does not affect the quality of the overall display image, and has low manufacturing cost and good display effect. Etc.
  • the technical solution adopted by the present invention is: providing a display screen including a pixel matrix for illuminating display and a light shielding layer for preventing crosstalk between color pixels in the pixel matrix, the pixel matrix a diffusing film for weakening the optical representation of the light shielding layer is provided on the light-emitting surface, the diffusion film is a mesh structure and is composed of a plurality of grid cells, and at least one of the light-emitting surfaces corresponding to each of the pixel units is disposed on the light-emitting surface.
  • Grid unit is: providing a display screen including a pixel matrix for illuminating display and a light shielding layer for preventing crosstalk between color pixels in the pixel matrix, the pixel matrix a diffusing film for weakening the optical representation of the light shielding layer is provided on the light-emitting surface, the diffusion film is a mesh structure and is composed of a plurality of grid cells, and at least one of the light-emitting surfaces corresponding to each of the pixel units is
  • the diffusing film has a haze ranging from 82% to 93% and a transmittance ranging from 33 ⁇ 3 ⁇ 4 to 45 ⁇ 3 ⁇ 4.
  • the width of the mesh unit network line ranges from 360 micrometers to 580 micrometers.
  • the mesh unit network wire has a thickness ranging from 80 micrometers to 220 micrometers.
  • the grid unit is a regular polygon structure with an even number of sides.
  • one of the grid elements is disposed on a corresponding light-emitting surface of each of the pixel units, and the grid unit has a square structure and four vertices thereof respectively correspond to the pixel unit
  • the surrounding sunshade is in contact.
  • the display screen of the present invention, the diffusing film has a haze value of 85%, a transmittance of 35%, a width of the grid unit network line of 500 micrometers, and a thickness of the grid unit network line. It is 200 microns.
  • the display screen of the present invention is a liquid crystal display screen
  • the liquid crystal display panel comprises a thin film transistor substrate, a color film substrate, a liquid crystal layer disposed between the thin film transistor substrate and the color film substrate, and a setting
  • the lower polarizer on the side of the thin film transistor substrate remote from the liquid crystal layer and the upper polarizer disposed on the side of the color filter substrate away from the liquid crystal layer are disposed on the upper polarizer.
  • the display screen of the present invention is an organic light-emitting display screen, and the organic light-emitting display package An array substrate, an organic light-emitting layer, and a cover glass, wherein the organic light-emitting layer is disposed on the array substrate; the cover glass is disposed over the array substrate by a sealant, and the diffusion film is disposed on the cover Cover the glass.
  • the present invention also provides a virtual reality helmet comprising the display screen described above.
  • the display screen provided by the invention has the characteristics of simple structure, convenient use and low production cost, and can provide better display effect; the diffusion film adopts an optimized design shape and structure, and can uniformly weaken the shading
  • the optical performance of the layer ensures that the overall display image is coordinated and consistent on the basis of effectively solving the effect of displaying image particles.
  • the diffusion film of the mesh structure minimizes the overall transparency and brightness of the display image. The effect is to make the overall presented picture clear and delicate, which can improve the picture quality and user experience of the display.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of a diffusion film according to Embodiment 1 of the present invention.
  • Embodiment 2 of the present invention is a schematic structural diagram of Embodiment 2 of the present invention.
  • the display screen provided by the present invention includes a thin film transistor substrate 1, a color filter substrate 2, a liquid crystal layer 3 disposed between the thin film transistor substrate 1 and the color filter substrate 2, and a thin film transistor substrate.
  • a lower polarizer 5 away from the liquid crystal layer 3 side and an upper polarizer 6 disposed on the side of the color filter substrate 2 away from the liquid crystal layer 3, and a diffusion film 7 disposed on the light emitting surface of the upper polarizer 6, further comprising
  • the first glass on the lower side of the polarizer 6 The glass substrate and the second glass substrate disposed on the upper side of the lower polarizer 5.
  • the thin film transistor substrate 1 includes a light transmissive pixel unit formed by intersecting scan lines and data lines; and the color filter substrate 2 includes color filter units respectively corresponding to the pixel units.
  • the backlight emitted light is first incident on the lower polarizer 5, polarized by the lower polarizer 5, and then incident on the transparent pixel unit through the second glass substrate.
  • the display screen is energized, the liquid crystal molecules in the liquid crystal layer 3 are twisted, and the light beam polarized by the lower polarizer 5 is transmitted through the light transmissive pixel unit, and then partially passes through the liquid crystal molecules driven by the voltage potential difference to enter the color filter unit.
  • After filtering through the filter unit it passes through the first glass substrate and enters the upper polarizer 6.
  • the polarizer 6 is polarized to form a pixel unit display beam.
  • the pixel unit displays that a part of the light beam is diffused through the diffusion film, and the other portion is directly incident on the human eye by the upper polarizer 6.
  • the diffusion film 7 in this embodiment has a mesh structure and is composed of a plurality of grid cells, and the diffusion film 7 is attached to the upper surface of the upper polarizer 6 on the light-emitting surface of the pixel matrix.
  • the mesh diffusion film 7 may also be attached to the lower surface of the upper polarizer 6.
  • each of the pixel units has a grid unit corresponding to the light-emitting surface, and the grid unit has a square structure and four vertices thereof respectively contact the light-shielding layer around the pixel unit, and the diffusion film 7
  • the haze ranges from 82% to 93%, and the penetration ranges from 33% to 45%
  • the mesh unit mesh has a width ranging from 360 microns to 580 microns and a thickness ranging from 80 microns to 220 microns.
  • a diffusion film 7 having a haze value of 85%, a transmittance of 35%, a width of 500 ⁇ m, and a thickness of 200 ⁇ m is preferable, and the diffusion film of this preferred value causes the light to be 45 degrees with respect to the horizontal direction.
  • the light projection path passes through the local mesh of the diffusion film grid unit, and the light is diffused and decomposed into substantially uniform diffused light on both sides.
  • the diffusion film of the above features is also disposed in the adjacent pixel display region, the transmitted light transmitted through the pixel unit corresponding to the diffusion film attachment region is also diverged to make the optical performance of the light shielding layer around the pixel unit. Achieve the best weakening effect.
  • the diffusion principle of the diffusion film 7 to light is as follows:
  • the diffusion film 7 is provided on its surface or inside with a diffusion layer having a plurality of materials having different refractive indices which are randomly arranged.
  • the light propagates through the diffusion film 7 and continually passes through two media having different refractive indices, and the same light refracts, reflects and scatters, thereby forming an optical diffusion effect.
  • the index characterizing the diffusion of the diffusing film 7 to light is haze.
  • Haze is the percentage of transmitted light that is more than 2.5 degrees from the incident light as a percentage of the total transmitted light. The greater the haze value , indicating that the diffused light accounts for the greater percentage of all outgoing rays.
  • the film 7 also diffuses the corresponding light beam in the pixel unit to form uniform diffused light, and the diffused light of any adjacent upper, lower, left, and right pixel units has a partial optical path synthesis at the boundary, and the optical boundary between adjacent pixel units
  • the performance is generally a light-shielding layer 8 for preventing cross-talk of color light between pixel units, and therefore, the light-shielding performance of the light-shielding layer 8 is weakened by diffusion light, that is, the particle effect of displaying an image is reduced.
  • the diffusion film 7 occupies a small range on the corresponding light-emitting surface of each pixel unit in the embodiment, it does not diffuse all the display units of the pixel unit, thereby reducing the diffusion of the diffusion film to the overall display beam.
  • the effect of light transmission improves the brightness of the display screen.
  • the realism and three-dimensionality enhance the user experience.
  • the present embodiment solves the paradox between the degree of particle effect and the transmittance in the prior art, that is, the prior art reduces the particle size of the display screen without increasing the pixel density of the display screen.
  • the effect can only be achieved by increasing the haze of the diffusion film, so that more of the display light is diffused, resulting in a weaker overall brightness of the screen, and the degree of detail and clarity of the display is also reduced.
  • the optical performance of the light shielding layer can be uniformly weakened, and the coordination and consistency of the overall display image can be maintained on the basis of effectively solving the effect of displaying image particles.
  • the diffusing film of the mesh structure minimizes the overall influence on the transmittance and brightness of the display screen, so that the overall presented picture is clear and delicate, and can improve the picture quality and user experience of the display screen.
  • the mesh unit of the diffusion film 7 may be other different forms that can uniformly diffuse the display light, and the diffusion slope of the mesh pair display light may be 0-90 with respect to the horizontal direction. Other angles between degrees.
  • Embodiment 2 is different from Embodiment 1 in that: the display screen is an organic light-emitting display, and the organic light-emitting display panel includes an array substrate 21, an organic light-emitting layer 22, and a cover glass 23, organic The light-emitting layer 2 2 is disposed on the array substrate 21; the cover glass 23 is disposed above the array substrate 21 by a sealant, and the diffusion film 7 is disposed on the cover glass 23.
  • the organic light-emitting layer 22 is provided with a plurality of organic light-emitting units and forms an image after light-emitting In the prime matrix, after any one of the transistors in the array substrate 21 is gated, the organic light-emitting unit corresponding thereto is driven to emit light.
  • the light beam emitted by the organic light emitting unit passes through the cover glass 23 to form a pixel unit display beam.
  • the diffusion film 7 may be disposed on the upper surface or the lower surface of the cover glass 23, and the diffusion film 7 has a haze value of 90% and a transmittance of 40%. In this embodiment, the diffusion film 7 is disposed on the light-emitting surface of the cover glass 23, which is the same as the diffusion effect of the diffusion film 7 on the light beam in the first embodiment.
  • the diffusion film 7 is incident on a small portion thereof.
  • the pixel unit displays the light beam and then emits the diffused light, and the diffused light partially overlaps at the boundary of any two adjacent pixel units, thereby weakening the light shielding layer between the adjacent pixel units, reducing the particle effect of displaying the image, and improving the display screen.
  • the display effect is not limited to.
  • the present application also provides a virtual reality helmet, comprising: a display, an image processing unit for processing an image and outputting an image to the display, an optical system for magnifying an image on the viewing display, and a master for controlling the image processing unit
  • the control unit wherein the display comprises a display screen as described above.
  • the virtual reality helmet of the present application may include other well-known structures in addition to the above structure. In order not to obscure the focus of the application, these known structures will not be performed. Further description.

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Abstract

一种显示屏及虚拟现实头盔，显示屏包括用于发光显示的像素矩阵和用于防止像素矩阵中像素单元之间色光相互串扰的遮光层（8），像素矩阵的出光面上设有用于弱化遮光层（8）光学表现的扩散膜（7），扩散膜（7）为网状结构且由多个网格单元组成，每个像素单元对应的出光面上设有至少一个网格单元。显示屏具有结构简单、使用方便、制作成本低等特点，且能提供更好的显示效果。

Description

发明名称：显示屏及虚拟现实头盔
技术领域
[0001] 本发明涉及虚拟现实技术领域， 具体而言， 涉及一种显示屏及虚拟现实头盔。
背景技术
[0002] LCD画面是透射型成像原理， 液晶本身并不发光， 所有光线来源于液晶板后面 的光源， 液晶分子有能让光线改变原来的方向的奇特功能， 光线透过吋可以经 由液晶层控制光线的强弱。 由于液晶本身没有色彩， 所以人们在液晶射出的方 向增加了一层彩色滤光膜， 薄膜上有很多红、 绿、 蓝三原色像素。 光线受液晶 分子的控制， 透过每个像素单元的光线强度也不同， 三原色通过混合才得到我 们所需要的色彩。
[0003] 为了防止相邻像素单元之间透光串扰， 常常通过遮光单元将各个像素单元之间 分隔幵来， 各个像素单元的遮光单元相连即形成整个屏幕的遮光矩阵， 即遮光 层。 由于每个像素之间的遮光层总有一定宽度， 因此如果把液晶显示器放大的 话， 能清晰的看见一个一个的像素格。 对液晶显示器来说， 单一的像素格不容 易观察， 但许多这种像素格叠加后， 在某些特定的光线条件下， 就容易被人眼 察觉。 这种被察觉出来的像素， 在普通消费者看来就认为显示器具有颗粒效果
[0004] 头戴式显示器包括显示屏及光学系统， 显示屏接收经过计算机系统处理后发送 的画面数据以进行画面显示， 光学系统对显示屏显示的画面进行放大， 人眼观 察到的是经过光学系统放大后的显示画面。 对于常规像素密度的显示屏在正常 使用距离下， 人眼分辩不出各个像素点之间的遮光层。 但是由于头戴式显示器 距离人眼比较近， 并且画面通常需经过光学系统放大后进入人眼， 常规像素密 度的显示屏像素点之间的遮光层就容易展现出来， 使得人眼观察到的显示图像 的颗粒效果较强。
[0005] 为了改善头戴式显示器显示画面的颗粒效果， 通常做法是提高显示器的显示面 板的像素密度， 但是提高像素密度会增加显示屏制作过程的复杂度及制作成本 。 为达到良好的临场显示体验， 实有必要对 3D头戴显示器的显示画面做出进一 步的改进。
技术问题
[0006] 为解决上述技术问题， 本发明提供一种显示屏及虚拟现实头盔， 能弱化像素单 元边界遮光层的光学表现， 同吋不影响整体显示画面的质量， 具有制作成本低 、 显示效果好等优点。
问题的解决方案
技术解决方案
[0007] 本发明采用的技术方案是： 提供一种显示屏， 包括用于发光显示的像素矩阵和 用于防止所述像素矩阵中像素单元之间色光相互串扰的遮光层， 所述像素矩阵 的出光面上设有用于弱化所述遮光层光学表现的扩散膜， 所述扩散膜为网状结 构且由多个网格单元组成， 每个所述像素单元对应的出光面上设有至少一个所 述网格单元。
[0008] 本发明所述的显示屏， 所述扩散膜的雾度范围为 82%至 93%， 穿透率范围为 33 <¾至45<¾。
[0009] 本发明所述的显示屏， 所述网格单元网线的宽度范围为 360微米至 580微米。
[0010] 本发明所述的显示屏， 所述网格单元网线的厚度范围为 80微米至 220微米。
[0011] 本发明所述的显示屏， 所述网格单元为边数为偶数的正多边形结构。
[0012] 本发明所述的显示屏， 每个所述像素单元对应的出光面上设有一个所述网格单 元， 所述网格单元为正方形结构且其四个顶点分别与所述像素单元四周的遮光 层相接触。
[0013] 本发明所述的显示屏， 所述扩散膜的雾度值为 85%， 穿透率为 35%， 所述网格 单元网线的宽度为 500微米， 所述网格单元网线的厚度为 200微米。
[0014] 本发明所述的显示屏， 所述显示屏为液晶显示屏， 所述液晶显示屏包括薄膜晶 体管基板、 彩膜基板、 设置在薄膜晶体管基板和彩膜基板之间的液晶层、 设置 在薄膜晶体管基板远离液晶层一侧的下偏光片以及设置在彩膜基板远离液晶层 一侧的上偏光片， 所述扩散膜设置在所述上偏光片上。
[0015] 本发明所述的显示屏， 所述显示屏为有机发光显示屏， 所述有机发光显示屏包 括阵列基板、 有机发光层和封盖玻璃， 所述有机发光层设置在所述阵列基板上 ； 所述封盖玻璃通过密封胶设置在所述阵列基板上方， 所述扩散膜设置在所述 封盖玻璃上。
[0016] 本发明还提供一种虚拟现实头盔， 包括上述所述的显示屏。
发明的有益效果
有益效果
[0017] 本发明提供的显示屏相对于现有技术具有结构简单、 使用方便、 制作成本低的 特点， 且能提供更好的显示效果； 扩散膜采用优化设计的形状和结构， 能均匀 弱化遮光层的光学表现， 使其在有效解决显示图像颗粒效果的基础上， 保持了 整体显示画面协调和一致， 同吋， 网状结构的扩散膜最大程度减少了对显示画 面透光度及亮度的整体影响， 使整体呈现的画面清晰细腻， 能提高显示屏的画 面质感和用户体验。
对附图的简要说明
附图说明
[0018] 下面将结合附图及实施例对本发明作进一步说明， 附图中：
[0019] 图 1为本发明实施例一的结构示意图；
[0020] 图 2为本发明实施例一中扩散膜的结构示意图；
[0021] 图 3为本发明实施例二的结构示意图。
本发明的实施方式
[0022] 为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实施例 ， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用 以解释本发明， 并不用于限定本发明。
[0023] 如图 1所示， 本发明所提供的显示屏包括薄膜晶体管基板 1、 彩膜基板 2、 设置 在薄膜晶体管基板 1和彩膜基板 2之间的液晶层 3、 设置在薄膜晶体管基板 1远离 液晶层 3—侧的下偏光片 5以及设置在彩膜基板 2远离液晶层 3—侧的上偏光片 6以 及设置在上偏光片 6出光面上的扩散膜 7， 还包括设置在上偏光片 6下侧的第一玻 璃基板和设置在下偏光片 5上侧的第二玻璃基板。 薄膜晶体管基板 1包括由扫描 线和数据线交叉设置而形成的透光的像素单元； 彩膜基板 2包括分别与像素单元 相对应的滤色单元。 背光源发射光首先入射到下偏光片 5中， 经下偏光片 5偏光 后透过第二玻璃基板入射到透光的像素单元。 当显示屏通电后液晶层 3中的液晶 分子发生扭转， 被下偏光片 5偏光后的光束透射过透光的像素单元， 然后部分通 过经电压势差驱动的液晶分子进入到滤色单元， 光束经过滤色单元滤光后透过 第一玻璃基板再进入上偏光片 6， 被上偏光片 6偏光后形成像素单元显示光束。 像素单元显示光束一部分通过扩散膜扩散， 其他部分则由上偏光片 6直接入射到 人眼中。
结合图 1和图 2可知， 本实施例中的扩散膜 7为网状结构且由多个网格单元组成 ， 扩散膜 7贴附在像素矩阵出光面上的上偏光片 6的上表面， 在其他优选实施例 中， 网状扩散膜 7也可贴附在上偏光片 6的下表面上。 具体的， 本实施例中每个 像素单元对应的出光面上都设有一个网格单元， 网格单元为正方形结构且其四 个顶点分别与像素单元四周的遮光层相接触， 扩散膜 7的雾度范围为 82%至 93% ， 穿透率范围为 33%至 45% ; 网格单元网线的宽度范围为 360微米至 580微米， 厚 度范围为 80微米至 220微米。 本实施例中优选雾度值为 85%、 穿透率为 35%、 宽 度为 500微米、 厚度为 200微米的扩散膜 7， 此优选数值下的扩散膜使光线是以相 对于水平线方向 45度角方向延伸布置的， 光投射路径通过扩散膜网格单元局部 网线吋， 光线被扩散分解为两侧大致均匀的扩散光。 另外由于相邻像素显示区 域中同样布设有上述特征的扩散膜， 同样会对透射在此像素单元的对应该扩散 膜贴附区域上的透射光进行发散处理， 使像素单元周边遮光层的光学表现实现 最佳的弱化效果。 同吋， 由于每个像素单元出光面上的扩散膜 7结构一致并完整 对称， 使整个屏幕仍能保持显示画面的和谐和一致性， 有效保证了显示画面的 质量。 扩散膜 7对光线的扩散原理为： 扩散膜 7在其表面或内部设置有具有随机 排列的折射率不同的多种材料的扩散层。 光线在扩散膜 7中传播吋不断的在两个 折射率相异的介质中穿过， 与此同吋光线就会发生多次折射、 反射与散射的现 象， 如此便形成了光学扩散的效果。 表征扩散膜 7对光线扩散的指标为雾度。 雾 度是指偏离入射光 2.5度角以上的透射光强占总透射光强的百分数。 雾度值越大 ， 说明被扩散的光线占全部出射光线的百分比越大。 当像素单元显示光束通过 扩散膜 7后， 光被散射， 且位于扩散膜 7网格单元网线两侧的光大致分解为均匀 的扩散光， 相邻像素单元显示区域中同样布设有上述特征的扩散膜 7， 同样会对 像素单元中对应的光束进行扩散处理形成均匀的扩散光， 任意相邻上下左右像 素单元的扩散光在边界处会有部分光路合成， 而相邻像素单元之间边界的光学 表现通常为用于防止像素单元之间色光相互串扰的遮光层 8， 因此， 遮光层 8的 遮光表现被扩散光阻隔而被弱化， 即减少了显示图像的颗粒效果。
[0025] 由于本实施例中扩散膜 7在每个像素单元的对应出光面上占据范围较小， 其并 不对所有的像素单元显示光束进行扩散处理， 如此尽可能减少了扩散膜对整体 显示光束透光的影响， 提高了显示画面的亮度， 同吋， 通过对扩散膜 7形状、 结 构、 设置位置的优化设计， 能有效解决相邻像素单元之间的遮光层的显现问题 ， 提高了显示画面的真实感和立体感， 从而提高了用户体验。
[0026] 由上可知， 本实施例解决了现有技术中颗粒效果程度和透光度之间的悖论， 即 现有技术在不提高显示屏像素密度的情况下为了减少显示画面的的颗粒效果程 度只能通过加大扩散膜的雾度， 使更多的显示光线被扩散， 从而导致屏幕整体 的亮度变弱， 同吋， 显示画面的细腻程度和清晰程度也被降低。 本实施例通过 合理设置扩散膜的形状、 结构和位置， 能均匀弱化遮光层的光学表现， 且其在 有效解决显示图像颗粒效果的基础上， 能保持了整体显示画面的协调和一致， 同吋， 网状结构的扩散膜最大程度减少了对显示画面透光度及亮度的整体影响 ， 使整体呈现的画面清晰细腻， 能提高显示屏的画面质感和用户体验。
[0027] 在其他优选实施例中， 扩散膜 7的网格单元可以是能使显示光线均匀扩散的其 他不同形态， 其网状线对显示光线的扩散斜率可以是相对于水平线方向的 0-90度 之间的其他角度。
[0028] 实施例二
[0029] 如图 3所示， 实施例二与实施例一的不同之处在于： 显示屏为有机发光显示屏 ， 有机发光显示屏包括阵列基板 21、 有机发光层 22和封盖玻璃 23， 有机发光层 2 2设置在阵列基板 21上； 封盖玻璃 23通过密封胶设置在阵列基板上方 21， 扩散膜 7设置在封盖玻璃 23上。 有机发光层 22设有多个有机发光单元且在发光后形成像 素矩阵， 阵列基板 21中的任意一个晶体管选通后， 驱动与之对应的有机发光单 元发光。 该有机发光单元发出的光束经过封盖玻璃 23后形成像素单元显示光束 。 扩散膜 7可设置在封盖玻璃 23的上表面或下表面， 扩散膜 7的雾度值为 90%， 穿 透率为 40%。 本实施例中， 扩散膜 7设置在封盖玻璃 23的出光面上， 与实施例一 中扩散膜 7对光束的扩散作用相同， 在本实施例中扩散膜 7将小部分入射到其中 的各个像素单元显示光束扩散后射出形成扩散光， 扩散光在任意相邻两个像素 单元的边界有部分交叠， 从而弱化相邻像素单元之间的遮光层， 减少显示图像 的颗粒效果， 改善显示屏的显示效果。
[0030] 本申请还提供一种虚拟现实头盔， 包括： 显示器、 用于处理图像并向显示器输 出图像的图像处理单元、 用于放大观看显示器上图像的光学系统以及用于控制 图像处理单元的主控单元， 其中， 显示器包括如上所述的显示屏。 此外， 本领 域技术人员可以明白， 本申请的虚拟现实头盔除了包括上述的结构之外， 还可 以包括其它的一些公知的结构， 为了不模糊本申请的重点， 将不再对这些公知 的结构进行进一步的描述。
[0031] 以上结合附图对本发明的实施例进行了描述， 但是本发明并不局限于上述的具 体实施方式， 上述的具体实施方式仅仅是示意性的， 而不是限制性的， 本领域 的普通技术人员在本发明的启示下， 在不脱离本发明宗旨和权利要求所保护的 范围情况下， 还可做出很多形式， 这些均属于本发明的保护之内。

Claims

权利要求书
一种显示屏， 包括用于发光显示的像素矩阵和用于防止所述像素矩阵 中像素单元之间色光相互串扰的遮光层， 其特征在于， 所述像素矩阵 的出光面上设有用于弱化所述遮光层光学表现的扩散膜， 所述扩散膜 为网状结构且由多个网格单元组成， 每个所述像素单元对应的出光面 上设有至少一个所述网格单元。
如权利要求 1所述的显示屏， 其特征在于， 所述扩散膜的雾度范围为 8 2%至 93<¾， 穿透率范围为 33%至 45<¾。
如权利要求 1所述的显示屏， 其特征在于， 所述网格单元网线的宽度 范围为 360微米至 580微米。
如权利要求 1所述的显示屏， 其特征在于， 所述网格单元网线的厚度 范围为 80微米至 220微米。
如权利要求 1所述的显示屏， 其特征在于， 所述网格单元为边数为偶 数的正多边形结构。
如权利要求 1所述的显示屏， 其特征在于， 每个所述像素单元对应的 出光面上设有一个所述网格单元， 所述网格单元为正方形结构且其四 个顶点分别与所述像素单元四周的遮光层相接触。
如权利要求 6所述的显示屏， 其特征在于， 所述扩散膜的雾度值为 85 %, 穿透率为 35%， 所述网格单元网线的宽度为 500微米， 所述网格 单元网线的厚度为 200微米。
如权利要求 1所述的显示屏， 其特征在于， 所述显示屏为液晶显示屏 ， 所述液晶显示屏包括薄膜晶体管基板、 彩膜基板、 设置在薄膜晶体 管基板和彩膜基板之间的液晶层、 设置在薄膜晶体管基板远离液晶层 一侧的下偏光片以及设置在彩膜基板远离液晶层一侧的上偏光片， 所 述扩散膜设置在所述上偏光片上。
如权利要求 1所述的显示屏， 其特征在于， 所述显示屏为有机发光显 示屏， 所述有机发光显示屏包括阵列基板、 有机发光层和封盖玻璃， 所述有机发光层设置在所述阵列基板上； 所述封盖玻璃通过密封胶设 置在所述阵列基板上方， 所述扩散膜设置在所述封盖玻璃上。
[权利要求 10] —种虚拟现实头盔， 其特征在于， 包括上述权利要求 1-9任一所述的 显示屏。
PCT/CN2017/073985 2016-11-30 2017-02-17 显示屏及虚拟现实头盔 WO2018098905A1 (zh)

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