WO2016049961A1 - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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Publication number
WO2016049961A1
WO2016049961A1 PCT/CN2014/089620 CN2014089620W WO2016049961A1 WO 2016049961 A1 WO2016049961 A1 WO 2016049961A1 CN 2014089620 W CN2014089620 W CN 2014089620W WO 2016049961 A1 WO2016049961 A1 WO 2016049961A1
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Prior art keywords
liquid crystal
display device
crystal display
wire grid
crystal panel
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PCT/CN2014/089620
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English (en)
French (fr)
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连水池
康志聪
郭仪正
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/428,356 priority Critical patent/US9470925B2/en
Publication of WO2016049961A1 publication Critical patent/WO2016049961A1/zh

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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

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal display device.
  • Liquid crystal display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as LCD TV, mobile phone, personal digital assistant, digital camera, computer screen or laptop screen. Wait.
  • Most of the conventional liquid crystal display devices are backlight type liquid crystal display devices, and include a casing, a liquid crystal panel disposed in the casing, and a backlight module disposed in the casing.
  • the liquid crystal panel itself does not emit light, and the backlight module is required to provide a light source to the liquid crystal panel to display the image normally.
  • Fig. 1 is a schematic view showing a conventional liquid crystal display device.
  • the structure of the conventional liquid crystal panel 100 is composed of a color filter substrate 110 (Color Filter, CF), a thin film transistor array substrate 130 (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer filled between the two substrates. (Liquid Crystal Layer), which works by controlling the rotation of the liquid crystal molecules of the liquid crystal layer by applying a driving voltage on the color filter substrate 110 and the array substrate 130, and controlling the output of the light, and the backlight module 300 is controlled. The light is refracted to produce a picture.
  • the upper surface of the color filter substrate 110 is attached with an upper polarizer 150, and the lower surface of the color filter substrate 110 is provided with a color photoresist in units of pixels.
  • the lower surface of the array substrate 130 is attached with a lower polarizer 170 perpendicular to the axial direction of the upper polarizer 150.
  • the upper surface of the array substrate 130 is provided with a TFT element switch for charging and discharging the pixel, and the TFT element switch is formed to control the liquid crystal layer.
  • the pattern of the ITO electrode can be designed to be suitable for twisted nematic (TN mode) electrode patterns, or for vertical alignment type (VA mode) single domain (1 domain), dual domain (2domain) Four-domain (4domain), eight-domain (8-domain) patterns, and patterns suitable for IPS mode single-domain, dual-domain, and four-domain.
  • TN mode twisted nematic
  • VA mode vertical alignment type
  • the conventional backlight module 300 includes a backlight 310, a light guide plate 330, a bottom reflective sheet 350, and an optical film set 370.
  • the backlight 310 can be a light emitting diode (LED), a cold cathode fluorescent tube (CCFL) or a hot cathode fluorescent tube (HCFL).
  • the optical film set 370 includes a diffusion film, a brightness enhancement film, and a protective film.
  • the driving mode of the liquid crystal panel of the existing liquid crystal television product mostly adopts the VA mode or the IPS mode scheme to expand the display viewing angle.
  • VA mode has the advantages of high yield and high productivity.
  • the ITO electrode in order to reduce the chromatic aberration displayed by large viewing angles, the ITO electrode must adopt the 8domain pattern to improve the dominant role of the big view.
  • the ITO electrode adopts the 8domain pattern, which causes the process yield to decrease, the aperture ratio to decrease, the liquid crystal efficiency to decrease, and the light transmittance to decrease, which indirectly increases the cost of the backlight module. If the VA mode scheme of 2domain or 1domain is adopted, the light transmittance can be greatly improved, but the role of the big vision will become more serious.
  • the display panel of the LCD TV needs a large viewing angle
  • the brightness of the viewing angle should meet the requirements of the viewing angle specification of 1/2 brightness or 1/3 brightness
  • the optical film group of the backlight module needs to reach a larger viewing angle
  • the liquid crystal panel The transmittance of the large-angle light is reduced, so that the light-emitting efficiency of the backlight module is lowered, and the problem of the liquid crystal panel large-view character bias is clearly visible.
  • the present invention provides a liquid crystal display device including a liquid crystal panel and a collimated light-emitting backlight module that provides a light source for the liquid crystal panel;
  • the liquid crystal panel includes a color filter substrate, and the color filter substrate a pair of oppositely disposed array substrates and a liquid crystal layer filled between the color filter substrate and the array substrate, wherein the color filter substrate is provided with an upper polarizer on an upper surface of the liquid crystal layer, and the array substrate is relatively far away a lower polarizer is disposed on the lower surface of the liquid crystal layer, and a viewing angle diffusion film is disposed on the upper polarizer;
  • the collimated light backlight module includes two backlights, and the bottom ends of the two backlights are disposed on the bottom a metal grating reflector, a wire grid polarizer disposed between the top ends of the two backlights, and an optical film set disposed above the wire grid polarizer, the two backlights and the metal grating The reflection sheet and the wire grid polarizer,
  • the viewing angle diffusion film is a diffusion optical film composed of diffusing particles.
  • the viewing angle diffusion film is designed by a prism structure, and the lower surface of the viewing angle diffusion film has a plurality of V-shaped protrusions.
  • the viewing angle diffusion film includes a plurality of diffractive optical units, and the diffractive optical unit is a rectangular protrusion disposed on an upper surface of the viewing angle diffusion film, and a spacing between each adjacent two diffractive optical units is equal to or Less than the visible wavelength.
  • the wire grid polarizing plate includes a transparent substrate and a metal wire grid pattern formed on the transparent substrate.
  • the pitch of the metal wire grid pattern is smaller than the wavelength of visible light.
  • the optical film set includes a microstructured brightness enhancement film that is capable of producing collimated light.
  • the microstructure brightness enhancement film is designed by a prism structure.
  • the metal grating reflection sheet has a metal grating pattern, and a pitch of the metal grating pattern is equal to or smaller than a visible light wavelength.
  • the liquid crystal panel is a single domain or a dual domain VA type liquid crystal panel.
  • a liquid crystal display device of the present invention provides a viewing angle diffusing film to emit a light component of a positive viewing angle to a large viewing angle, thereby greatly improving the light transmittance and solving the problem of the large-view character bias;
  • the grating polarizer separates the polarized light to generate the polarized light, thereby greatly improving the use efficiency of the light entering the liquid crystal panel; and converting the polarized light by providing the metal grating reflective sheet to further improve the use efficiency of the light entering the liquid crystal panel;
  • the liquid crystal display device can greatly improve the light transmittance and the light extraction efficiency, and can effectively solve the problem of the large-view character bias.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal display device
  • FIG. 2 is a schematic structural view of a liquid crystal display device of the present invention.
  • FIG. 3 is a schematic view showing an embodiment of a viewing angle diffusion film in a liquid crystal display device of the present invention
  • FIG. 4 is a schematic view showing another embodiment of a viewing angle diffusion film in the liquid crystal display device of the present invention.
  • the present invention provides a liquid crystal display device including a liquid crystal panel 1 and a collimated light-emitting backlight module 3 that provides a light source for the liquid crystal panel 1 .
  • the liquid crystal panel 1 includes a color filter substrate 11 , an array substrate 13 disposed opposite to the color filter substrate 11 , and a liquid crystal layer 12 filled between the color filter substrate 11 and the array substrate 13 .
  • the color filter substrate 11 is attached with an upper polarizer 15 on the upper surface of the liquid crystal layer 12, and a color resist in units of pixels is disposed on the lower surface of the liquid crystal layer 12.
  • a lower polarizer 17 perpendicular to the axial direction of the upper polarizer 15 is attached to the lower surface of the array substrate 13 opposite to the liquid crystal layer 12, and a pixel is charged and discharged on the upper surface of the liquid crystal layer 12
  • An electric TFT element switch is formed on the TFT element switch to form an ITO electrode capable of controlling the liquid crystal layer 12.
  • the pattern of the ITO electrode is designed to be suitable for a single-domain or two-domain VA type liquid crystal panel.
  • the single-domain or dual-domain VA liquid crystal panel is driven by UV2A, PVA or PSVA technology, and has a large aperture ratio, high liquid crystal efficiency, and high light transmittance.
  • the upper polarizer 15 is provided with a viewing angle diffusion film 19. Further, the viewing angle diffusion film 19 is attached to the upper polarizer 15.
  • the viewing angle diffusion film 19 may be a diffusion optical film composed of diffusing particles; or as shown in FIG. 3, the viewing angle diffusion film 19 is designed with a prism structure, and the lower surface thereof has a plurality of V-shaped protrusions 191 As shown in FIG. 4, the viewing angle diffusion film 19 includes a plurality of diffractive optical units 193, which are rectangular protrusions provided on the upper surface of the viewing angle diffusion film 19, each phase. The spacing between adjacent two diffractive optical units 193 is equal to or less than the wavelength of visible light.
  • the function of the viewing angle diffusion film 19 is to emit the light from the positive viewing angle to the large viewing angle, that is, to obliquely emit light relative to the vertical light emitting component of the liquid crystal panel 1, and greatly reduce the color generated by the large viewing angle light directly transmitting through the liquid crystal panel 1. Partial, thus solving the problem of large-view character bias, greatly improving the light penetration rate.
  • the collimated light-emitting backlight module 3 includes two backlights 31, a metal grating (reflecting sheet 33) disposed at a bottom end of the two backlights 31, and opposite ends of the two backlights 31.
  • the grating polarizer 35 constitutes a light guiding cavity 39.
  • the two backlights 31 are respectively disposed at two sides of the liquid crystal display device, and the backlight 31 is an LED light source.
  • the optical film set 37 includes a microstructured brightness enhancement film 371 that utilizes a prismatic design or other form that is capable of producing collimated light.
  • the wire grid polarizing plate 35 includes a transparent substrate 351 and a metal wire grid pattern 353 formed on the transparent substrate 351, and the pitch of the metal wire grid pattern 353 is smaller than the visible light wavelength.
  • the metal grating reflection sheet 33 has a metal grating pattern 331 having a pitch equal to or smaller than a visible light wavelength.
  • the function of the wire grid polarizing plate 35 is to perform S/P separation of the polarized light to generate polarized light, which greatly improves the use efficiency of light entering the liquid crystal panel 1; meanwhile, the wire grid polarizing plate 35 polarizes the S or P type. After the light is reflected, it is transmitted to the metal grating reflection sheet 33 via the light guiding cavity 39.
  • the metal grating reflection sheet 33 can not only reflect the light but also convert the S or P type polarized light into P or S type polarized light to be again By utilizing, the absorption ratio of the absorption type lower polarizer 17 to light is reduced, and the use efficiency of light entering the liquid crystal panel 1 is further improved.
  • the liquid crystal display device of the present invention will face up by providing a viewing angle diffusion diaphragm.
  • the corner light component gives a large viewing angle to greatly improve the light transmittance and solve the problem of the large-view character bias;
  • the polarized light is separated by setting the wire grid polarizing plate to generate the polarized light, and the light is greatly increased into the liquid crystal panel.
  • Efficiency by setting a metal grating reflection sheet to convert polarized light, further improving the use efficiency of light entering the liquid crystal panel; thus, the liquid crystal display device can greatly improve light transmittance and light extraction efficiency, and can effectively solve the problem of large-view character deviation. .

Abstract

提供一种液晶显示装置，包括液晶面板(1)及准直出光背光模组(3)；液晶面板(1)包括彩色滤光片基板(11)、阵列基板(13)、及液晶层(12)，彩色滤光片基板(11)的上表面上设有上偏光片(15)，阵列基板(13)的下表面上设有下偏光片(17)，上偏光片(15)上设有一视角扩散膜片(19)；准直出光背光模组(3)包括两背光源(31)、金属光栅反射片(33)、线栅偏振片(35)、及光学膜片组(37)；两背光源(31)、金属光栅反射片(33)、与线栅偏振片(35)构成导光腔体(39)。能够大幅提高光线穿透率与出光效率，并能够有效解决大视角色偏问题。

Description

液晶显示装置 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种液晶显示装置。
背景技术
液晶显示装置(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如液晶电视、移动电话、个人数字助理、数字相机、计算机屏幕或笔记本电脑屏幕等。
现有的液晶显示装置大部分为背光型液晶显示装置，其包括壳体、设于壳体内的液晶面板及设于壳体内的背光模组(Backlight module)。液晶面板本身不发光，需要由背光模组提供光源给液晶面板来正常显示影像。
图1所示为现有的液晶显示装置的示意图。传统的液晶面板100的结构是由一彩色滤光片基板110(Color Filter，CF)、一薄膜晶体管阵列基板130(Thin Film Transistor Array Substrate，TFT Array Substrate)以及一填充于两基板间的液晶层(Liquid Crystal Layer)所构成，其工作原理是通过在彩色滤光片基板110和阵列基板130上施加驱动电压来控制液晶层的液晶分子的旋转，控制光的输出量，将背光模组300的光线折射出来产生画面。彩色滤光片基板110的上表面贴附有上偏光片150，彩色滤光片基板110的下表面设有以像素(Pixel)为单位的彩色光阻。阵列基板130的下表面贴附有与上偏光片150轴向垂直的下偏光片170，阵列基板130的上表面设有针对像素进行充放电的TFT元件开关，TFT元件开关上面制作可控制液晶层的ITO电极，该ITO电极的图案(Pattern)可设计为适用于扭曲向列型(TN mode)的电极图案、或适用于垂直配向型(VA mode)单畴(1domain)、双畴(2domain)、四畴(4domain)、八畴(8domain)的图案、以及适用于平面转换型(IPS mode)单畴、双畴、四畴的图案。
传统的背光模组300包括背光源310、导光板330、底反射片350、及光学膜片组370。背光源310可为发光二级管(LED)、冷阴极荧光灯管(CCFL)或热阴极荧光灯管(HCFL)。光学膜片组370包括扩散膜片、亮度增亮膜片及保护膜片。
现有液晶电视产品的液晶面板的驱动方式多采用VA mode或IPS mode方案，以扩大显示视角。VA mode具备良率高、产能高的优势，但为了降低大视角显示的色差，ITO电极必须采用8domain图案来改善大视角色偏， 但ITO电极采用8domain图案会使得制程良率下降、开口率下降、液晶效率下降、光线穿透率下降，间接提高了背光模组的成本。如果采用2domain或1domain的VA mode方案，光线穿透率可以大幅提高但大视角色偏会明显变严重。
此外，因为液晶电视的显示面板需要大视角观赏，视角亮度要符合1/2亮度或1/3亮度的视角规格需求，背光模组的光学膜片组需达到较大的出光视角，而液晶面板对大视角光线的穿透率下降，使得背光模组的出光效率下降，并且使得液晶面板大视角色偏问题明显可见。
发明内容
本发明的目的在于提供一种液晶显示装置，能够大幅提高光线穿透率与出光效率，并能够有效解决大视角色偏问题。
为实现上述目的，本发明提供一种液晶显示装置，包括液晶面板及为该液晶面板提供光源的准直出光背光模组；所述液晶面板包括彩色滤光片基板、与该彩色滤光片基板相对设置的阵列基板、及填充于彩色滤光片基板与阵列基板之间的液晶层，所述彩色滤光片基板相对远离液晶层的上表面上设有上偏光片，所述阵列基板相对远离液晶层的下表面上设有下偏光片，所述上偏光片上设有一视角扩散膜片；所述准直出光背光模组包括两背光源、相对所述两背光源底端设于二者之间的金属光栅反射片、相对所述两背光源顶端设于二者之间的线栅偏振片、及设于所述线栅偏振片上方的光学膜片组，所述两背光源、金属光栅反射片、与线栅偏振片构成导光腔体。
所述视角扩散膜片为由扩散粒子组成的扩散光学膜片。
所述视角扩散膜片采用菱镜结构设计，该视角扩散膜片的下表面具有多个V形凸起。
所述视角扩散膜片包括多个绕射光学单元，所述绕射光学单元为设于视角扩散膜片上表面上的矩形凸起，每相邻两个绕射光学单元之间的间距等于或小于可见光波长。
所述线栅偏振片包括透明基板、及形成于该透明基板上的金属线栅图案。
所述金属线栅图案的间距小于可见光波长。
所述光学膜片组包括微结构亮度增亮膜片，该微结构亮度增亮膜片能够产生准直出光。
所述微结构亮度增亮膜片采用菱镜结构设计。
所述金属光栅反射片具有金属光栅图案，所述金属光栅图案的间距等于或小于可见光波长。所述液晶面板为单畴或双畴的VA型液晶面板。
本发明的有益效果：本发明的一种液晶显示装置，通过设置视角扩散膜片来将正视角出光分量给大视角出光，以大幅提高光线穿透率，解决大视角色偏问题；通过设置线栅偏振片来将偏振光进行分离，以产生偏极出光，大幅提高光线进入液晶面板的使用效率；通过设置金属光栅反射片来对偏振光进行转换，进一步提高光线进入液晶面板的使用效率；从而该液晶显示装置能够大幅提高光线穿透率与出光效率，并能够有效解决大视角色偏问题。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为现有的液晶显示装置的结构示意图；
图2为本发明液晶显示装置的结构示意图；
图3为本发明液晶显示装置中视角扩散膜片的一种实施方式的示意图；
图4为本发明液晶显示装置中视角扩散膜片的另一种实施方式的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2，本发明提供一种液晶显示装置，包括液晶面板1及为该液晶面板1提供光源的准直出光背光模组3。
所述液晶面板1包括彩色滤光片基板11、与该彩色滤光片基板11相对设置的阵列基板13、及填充于彩色滤光片基板11与阵列基板13之间的液晶层12。所述彩色滤光片基板11相对远离液晶层12的上表面上贴附有上偏光片15，相对靠近液晶层12的下表面上设有以像素为单位的彩色光阻。所述阵列基板13相对远离液晶层12的下表面上贴附有与上偏光片15轴向垂直的下偏光片17，相对靠近液晶层12的上表面上设有针对像素进行充放 电的TFT元件开关，TFT元件开关上面制作可控制液晶层12的ITO电极，该ITO电极的图案设计为适用于单畴或双畴的VA型液晶面板的图案。该单畴或双畴的VA型液晶面板采用UV2A、PVA或PSVA技术驱动，开口率较大，液晶效率较高，光线穿透率较高。
需要重点说明的是，所述上偏光片15上设有一视角扩散膜片19。进一步的，所述视角扩散膜片19贴附于上偏光片15上。所述视角扩散膜片19可为由扩散粒子组成的扩散光学膜片；或如图3所示，所述视角扩散膜片19采用菱镜结构设计，其下表面具有多个V形凸起191；也可如图4所示，所述视角扩散膜片19包括多个绕射光学单元193，所述绕射光学单元193为设于视角扩散膜片19上表面上的矩形凸起，每相邻两个绕射光学单元193之间的间距等于或小于可见光波长。所述视角扩散膜片19的作用是将正视角出光分量给大视角出光，即将相对于液晶面板1的垂直出光分量给倾斜出光，大幅减小大视角出光直接透过液晶面板1所产生的色偏，从而解决大视角色偏问题，大幅提高光线穿透率。
所述准直出光背光模组3包括两背光源31、相对所述两背光源31底端设于二者之间的金属光栅(Metallic Grating)反射片33、相对所述两背光源31顶端设于二者之间的线栅偏振片(Wire Grid Polarizer)35、及设于所述线栅偏振片35上方的光学膜片组37，所述两背光源31、金属光栅反射片33、与线栅偏振片35构成导光腔体39。
具体的，所述两背光源31分别设于液晶显示装置的两侧，且所述背光源31为LED光源。所述光学膜片组37包括一采用菱镜结构设计或其它形式的微结构亮度增亮膜片371，该微结构亮度增亮膜片371能够产生准直出光。
需要重点说明的是，所述线栅偏振片35包括透明基板351、及形成于该透明基板351上的金属线栅图案353，且所述金属线栅图案353的间距小于可见光波长。所述金属光栅反射片33具有金属光栅图案331，所述金属光栅图案331的间距等于或小于可见光波长。所述线栅偏振片35的作用是将偏振光进行S/P分离，以产生偏极出光，大幅提高光线进入液晶面板1的使用效率；同时，该线栅偏振片35将S或P型偏振光反射后经由导光腔体39传至金属光栅反射片33，所述金属光栅反射片33不仅能够对光线进行反射，而且能够将S或P型偏振光转换成P或S型偏振光以再次利用，减少吸收型的下偏光片17对光线的吸收比例，进一步提高了光线进入液晶面板1的使用效率。
综上所述，本发明的液晶显示装置，通过设置视角扩散膜片来将正视 角出光分量给大视角出光，以大幅提高光线穿透率，解决大视角色偏问题；通过设置线栅偏振片来将偏振光进行分离，以产生偏极出光，大幅提高光线进入液晶面板的使用效率；通过设置金属光栅反射片来对偏振光进行转换，进一步提高光线进入液晶面板的使用效率；从而该液晶显示装置能够大幅提高光线穿透率与出光效率，并能够有效解决大视角色偏问题。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (11)

  1. 一种液晶显示装置，包括：液晶面板及为该液晶面板提供光源的准直出光背光模组；所述液晶面板包括彩色滤光片基板、与该彩色滤光片基板相对设置的阵列基板、及填充于彩色滤光片基板与阵列基板之间的液晶层，所述彩色滤光片基板相对远离液晶层的上表面上设有上偏光片，所述阵列基板相对远离液晶层的下表面上设有下偏光片，所述上偏光片上设有一视角扩散膜片；所述准直出光背光模组包括两背光源、相对所述两背光源底端设于二者之间的金属光栅反射片、相对所述两背光源顶端设于二者之间的线栅偏振片、及设于所述线栅偏振片上方的光学膜片组，所述两背光源、金属光栅反射片、与线栅偏振片构成导光腔体。
  2. 如权利要求1所述的液晶显示装置，其中，所述视角扩散膜片为由扩散粒子组成的扩散光学膜片。
  3. 如权利要求1所述的液晶显示装置，其中，所述视角扩散膜片采用菱镜结构设计，该视角扩散膜片的下表面具有多个V形凸起。
  4. 如权利要求1所述的液晶显示装置，其中，所述视角扩散膜片包括多个绕射光学单元，所述绕射光学单元为设于视角扩散膜片上表面上的矩形凸起，每相邻两个绕射光学单元之间的间距等于或小于可见光波长。
  5. 如权利要求1所述的液晶显示装置，其中，所述线栅偏振片包括透明基板、及形成于该透明基板上的金属线栅图案。
  6. 如权利要求5所述的液晶显示装置，其中，所述金属线栅图案的间距小于可见光波长。
  7. 如权利要求1所述的液晶显示装置，其中，所述光学膜片组包括微结构亮度增亮膜片，该微结构亮度增亮膜片能够产生准直出光。
  8. 如权利要求7所述的液晶显示装置，其中，所述微结构亮度增亮膜片采用菱镜结构设计。
  9. 如权利要求1所述的液晶显示装置，其中，所述金属光栅反射片具有金属光栅图案，所述金属光栅图案的间距等于或小于可见光波长。
  10. 如权利要求1所述的液晶显示装置，其中，所述液晶面板为单畴或双畴的VA型液晶面板。
  11. 一种液晶显示装置，包括：液晶面板及为该液晶面板提供光源的准直出光背光模组；所述液晶面板包括彩色滤光片基板、与该彩色滤光片基板相对设置的阵列基板、及填充于彩色滤光片基板与阵列基板之间的液 晶层，所述彩色滤光片基板相对远离液晶层的上表面上设有上偏光片，所述阵列基板相对远离液晶层的下表面上设有下偏光片，所述上偏光片上设有一视角扩散膜片；所述准直出光背光模组包括两背光源、相对所述两背光源底端设于二者之间的金属光栅反射片、相对所述两背光源顶端设于二者之间的线栅偏振片、及设于所述线栅偏振片上方的光学膜片组，所述两背光源、金属光栅反射片、与线栅偏振片构成导光腔体；
    其中，所述视角扩散膜片为由扩散粒子组成的扩散光学膜片；
    其中，所述线栅偏振片包括透明基板、及形成于该透明基板上的金属线栅图案；
    其中，所述金属线栅图案的间距小于可见光波长；
    其中，所述光学膜片组包括微结构亮度增亮膜片，该微结构亮度增亮膜片能够产生准直出光；
    其中，所述微结构亮度增亮膜片采用菱镜结构设计；
    其中，所述金属光栅反射片具有金属光栅图案，所述金属光栅图案的间距等于或小于可见光波长；
    其中，所述液晶面板为单畴或双畴的VA型液晶面板。
PCT/CN2014/089620 2014-09-30 2014-10-28 液晶显示装置 WO2016049961A1 (zh)

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CN105807493A (zh) * 2016-05-25 2016-07-27 昆山龙腾光电有限公司 液晶显示屏
CN106094338B (zh) * 2016-08-11 2023-06-30 京东方科技集团股份有限公司 一种双面显示装置及电子设备
CN106094341B (zh) * 2016-08-19 2019-05-10 京东方科技集团股份有限公司 一种背光模组及显示装置
KR102646789B1 (ko) * 2016-09-22 2024-03-13 삼성전자주식회사 지향성 백라이트 유닛 및 이를 포함하는 입체 영상 표시 장치
CN106940491A (zh) * 2017-03-30 2017-07-11 惠科股份有限公司 液晶显示装置
CN106814499A (zh) * 2017-03-31 2017-06-09 武汉华星光电技术有限公司 透反式液晶显示装置
CN109375419B (zh) * 2018-10-29 2021-11-05 京东方科技集团股份有限公司 背光模组和显示装置
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