WO2014198087A1 - 一种常白型液晶显示装置 - Google Patents

一种常白型液晶显示装置 Download PDF

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Publication number
WO2014198087A1
WO2014198087A1 PCT/CN2013/082340 CN2013082340W WO2014198087A1 WO 2014198087 A1 WO2014198087 A1 WO 2014198087A1 CN 2013082340 W CN2013082340 W CN 2013082340W WO 2014198087 A1 WO2014198087 A1 WO 2014198087A1
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WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
film
light
display device
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PCT/CN2013/082340
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English (en)
French (fr)
Inventor
胡君文
李林
洪胜宝
黄学勇
何基强
Original Assignee
信利半导体有限公司
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Application filed by 信利半导体有限公司 filed Critical 信利半导体有限公司
Priority to US14/896,563 priority Critical patent/US20160216551A1/en
Publication of WO2014198087A1 publication Critical patent/WO2014198087A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • 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
    • G02F1/133502—Antiglare, refractive index matching layers
    • 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
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/66—Normally white display, i.e. the off state being white

Definitions

  • the present invention relates to the field of liquid crystal display technology, and more particularly to a normally white liquid crystal display device. Background technique
  • the liquid crystal display device is classified into a normally black liquid crystal display device and a normally white liquid crystal display device.
  • the normally black liquid crystal display device is called a NB (Normally Black) liquid crystal device, and the polarities of the upper and lower polarizers are parallel to each other. Therefore, when no voltage is applied between the upper and lower polarizers, the liquid crystal is opaque. The display screen is dark; when a voltage is applied, the liquid crystal transmits light and the display screen is bright.
  • the normally white liquid crystal display device is called a NW (Normally White) liquid crystal device, and the polarities of the upper and lower polarizers are perpendicular to each other, so that the liquid crystal is transmitted without applying a voltage between the upper and lower polarizers.
  • FIG. 1 it is a schematic structural diagram of a conventional white-light display device, including a liquid crystal display and a backlight, and the liquid crystal display is located above the backlight.
  • the liquid crystal display includes an upper polarizer 1, a CF (Color Filter) substrate under the upper polarizer 1, a liquid crystal cell 3 located under the CF substrate 2, and a TFT located under the liquid crystal cell 3.
  • the backlight includes a diffuser plate 6 located below the lower polarizer 5, a light guide plate 7 located below the diffuser plate 6, and a reflective layer 8 located below the light guide plate 7.
  • the upper polarizer and the lower polarizer have the same hierarchical structure, as shown in FIG. 2, both of which include: The protective film 21, a first TAC (Triacetyl Cellulose) film 22 located under the protective film 21, a PVA (Polyvinyl Alcohol) film 23 under the first TAC film 22, and a PVA film 23 under the PVA film 23
  • normally white liquid crystal display devices are normally white liquid crystal display devices.
  • a normally white liquid crystal display device when a normally white liquid crystal display device is applied to a desktop computer or a notebook computer, since the general computer software is running, the entire screen is mostly bright, mostly white. Black characters. The highlight of the whole screen is the majority. It is not only convenient to use the normally white liquid crystal display device, but also the bright spot of the normally white liquid crystal display device does not need to be applied with voltage, and the power consumption is also relatively high. However, in the case where no voltage is applied between the backlight of the normally white liquid crystal display device and the upper and lower polarizers, that is, when it does not work, when natural light is incident, a large amount of natural light is reflected, stimulating the human eye, causing human generation. Dazzling.
  • the present invention provides a normally white type liquid crystal display device which effectively reduces glare.
  • the present invention provides the following technical solutions:
  • a normally white liquid crystal display device comprising: a liquid crystal display and a backlight, further comprising a light reduction film, the light reduction film being located on a side of the liquid crystal display facing away from the backlight, or In the liquid crystal display, or between the liquid crystal display and the backlight, or within the backlight.
  • the light-reducing film is located in the liquid crystal display, and specifically: the light-reducing film is located in the upper polarizer, or between the upper polarizer and the CF substrate, or the CF substrate and the liquid crystal cell Between, or between the liquid crystal cell and the TFT substrate, or between the TFT substrate and the lower polarizer, or Inside the polarizer.
  • the thickness of the light-reducing film is 0.1 ⁇ -20 ⁇ , including the endpoint value.
  • the thickness of the light-reducing film ranges from 0.01 mm to 0.50 mm, including the endpoint value. .
  • the thickness of the light-reducing film is 0.1 mm.
  • the light-reducing film is located in the upper polarizer, and specifically: the light-reducing film is located between the protective film of the upper polarizer and the first TAC film, or the first of the upper polarizer Between the TAC film and the PVA film, or between the PVA film and the second TAC film of the upper polarizer, or between the second TAC film and the pressure sensitive layer of the upper polarizer, or the upper polarizer Between the pressure sensitive layer and the release film.
  • the light-reducing film is located in the lower polarizer, and specifically: the light-reducing film is located between the protective film of the lower polarizer and the first TAC film, or the first of the lower polarizer Between the TAC film and the PVA film, or between the PVA film and the second TAC film of the lower polarizer, or between the second TAC film and the pressure sensitive layer of the lower polarizer, or the lower polarizer Between the pressure sensitive layer and the release film.
  • the light-reducing film is located in the backlight.
  • the light-reducing film is located between the diffusion plate of the backlight and the light guide plate or between the light guide plate and the reflective layer of the backlight.
  • the light-reducing film has a light transmittance ranging from 10% to 90%, inclusive.
  • the light reducing film is a black resin film or a gray resin film.
  • the normally white liquid crystal display device provided by the present invention has a light-reducing film.
  • the light-reducing film absorbs a part, and when the incident natural light is reflected and emitted through the reflective layer, it passes through the light-reducing film again, and is absorbed a part, thereby effectively reducing the intensity of the natural light emitted, thereby reducing the existing normally white liquid crystal display.
  • the glare generated by the device is not limited to no voltage applied between the upper and lower polarizers of the normally white liquid crystal display device and the backlight.
  • the display background color of the normally white liquid crystal display device is changed from gray to black, which not only makes the normally white liquid crystal display device beautiful, but also makes it easier for most people to accept, and increases The range of use of the normally white liquid crystal display device.
  • FIG. 1 is a schematic structural view of a conventional normally white liquid crystal display device
  • FIG. 2 is a schematic structural view of an upper or lower polarizer
  • 3a-3j are schematic views showing the position of the light-reducing film provided in the embodiment.
  • the normally white liquid crystal display device reflects a large amount of light, irritating the human eye, making the person Produces a sense of glare.
  • the inventors have found that the cause of such defects is mainly caused by natural light passing through the liquid crystal display device and incident on the backlight when no voltage is applied between the backlight of the normally white liquid crystal display device and the upper and lower polarizers.
  • the layer reflects a large amount of natural light through the backlight reflective layer, thereby irritating the human eye and causing a glare.
  • the display background color of the normally white liquid crystal display device is gray, which is not aesthetically pleasing.
  • the present invention provides a normally white liquid crystal display device, the normally white liquid crystal display device comprising: a liquid crystal display and a backlight, further comprising a light reduction film, wherein the light reduction film is located away from the liquid crystal display One side of the backlight, or within the liquid crystal display, or between the liquid crystal display and the backlight, or within the backlight.
  • the normally white liquid crystal display device provided by the invention has a light-reducing film.
  • the light-reducing film absorbs a part, and when the incident natural light is reflected and emitted through the reflective layer, it passes through the light-reducing film again, and is absorbed a part, effectively reducing the intensity of the emitted natural light, thereby reducing the existing normally white liquid crystal display. The glare generated by the device.
  • the display background color of the normally white liquid crystal display device tends to be black from gray, which not only makes the white-white liquid crystal display device beautiful, but makes it more acceptable to most people. Moreover, the use range of the normally white liquid crystal display device is increased.
  • the normally white liquid crystal display device includes: a liquid crystal display, a backlight, and a light reduction film, the light reduction film being located on a side of the liquid crystal display facing away from the backlight, or in the liquid crystal display, or the liquid crystal display Between the backlight and the backlight.
  • the light transmittance of the light-reducing film ranges from 10% to 90%, inclusive.
  • the transmittance of the light-reducing film is 80%
  • the incident light is specifically divided into 100 parts, and 100 parts of incident light enters when no voltage is applied between the upper polarizer and the lower polarizer of the liquid crystal display and the backlight.
  • the normally white liquid crystal display device passes through a light-reducing film, and the remaining 80 parts of light are incident on the reflective layer, reflected by the reflective layer, and passed through the light-reducing film to reflect 64 parts of light, thereby reducing glare; and when a voltage is applied thereto When the light from the backlight passes through the dimming film only once, although the display brightness has an effect, the effect is small.
  • the light-reducing film is a dark transparent film.
  • the light reduction film is a black resin film or a gray resin film.
  • the liquid crystal display comprises: an upper polarizer 1, a CF substrate 2, a liquid crystal cell 3, a TFT substrate 4, And the lower polarizer 5.
  • the backlight includes: a diffusion plate 6, a light guide plate 7, and a reflective layer 8.
  • the light-reducing film 11 is sequentially located on a side of the liquid crystal display 101 facing away from the backlight 102, in the upper polarizer 1, the upper polarizer 1 and the CF substrate. Between 2, between the CF substrate 2 and the liquid crystal cell 3, between the liquid crystal cell 3 and the TFT substrate 4, between the TFT substrate 4 and the lower polarizer 5, and below In the polarizer 5, between the liquid crystal display 101 and the backlight 102.
  • the thickness of the light-reducing film between the liquid crystal cell and the TFT substrate, or between the TFT substrate and the lower polarizer, or between the liquid crystal display and the backlight The range is 0.1 ⁇ -20 ⁇ , including the endpoint value, and the preferred thickness range is 1 ⁇ - 2 ⁇ , inclusive.
  • the thickness of the light-reducing film ranges from 0.01 mm to 0.50 mm, inclusive.
  • the thickness of the light-reducing film is 0.1 mm. Setting the dimming film to different positions, adjusting the most suitable thickness and density of the dimming film, adjusting the transmittance thereof, does not affect the internal structure of the liquid crystal display, and when the normally white liquid crystal display device is not working, When the upper and lower polarizers and the backlight are not applied with voltage, the transmittance of the incident natural light and the transmittance of the natural light reflected by the liquid crystal display device are lowered, and the glare is effectively reduced.
  • the light-reducing film is located in the upper polarizer. Specifically, the light-reducing film is located in the upper polarizer. Specifically, the light-reducing film is located on the protective film of the upper polarizer and the first TAC. Between the membranes, or between the first TAC film and the PVA film of the upper polarizer, or between the PVA film and the second TAC film of the upper polarizer, or the second TAC film of the upper polarizer Between the pressure sensitive layers, or the upper polarized light Between the pressure sensitive layer of the sheet and the release film.
  • the light-reducing film is located in the lower polarizer, and specifically: the light-reducing film is located between the protective film of the lower polarizer and the first TAC film, or the first TAC film of the lower polarizer Between the PVA films, or between the PVA film of the lower polarizer and the second TAC film, or between the second TAC film of the lower polarizer and the pressure sensitive layer, or the pressure sensitive layer of the lower polarizer Between the release film and the release film.
  • the light-reducing film is disposed in the upper polarizer or the lower polarizer to reduce the light transmittance of the polarizer.
  • the PVA film is formed by dyeing and stretching, and the film is a main part of the polarizer, which is also called a polarizing film, which determines the polarizing performance of the polarizer, and the poles of the upper and lower polarizers of the normally white liquid crystal display device.
  • the first TAC film and the second TAC film both protect the PVA film from moisture and air, and the pressure sensitive layer determines the adhesion performance and the chip processing performance of the polarizer.
  • the release film mainly serves as a protective pressure.
  • the function of the sensitive layer; the protective film is a polyethylene film coated with the EVA layer on one side, has a low viscosity, and functions to protect the first TAC film.
  • the light-reducing film may be located on either side of the first TAC film, or the PVA film, or the second TAC film, or the pressure-sensitive layer, and the light-reducing film may be formed on the surface of each layer by coating or sputtering; It may be a separate film formed between the layers.
  • the dimming film is located within the backlight.
  • the light reduction film 11 is located between the diffusion plate 6 of the backlight and the light guide plate 7 or is located at the guide of the backlight. Between the light plate 7 and the reflective layer 8.
  • the above-mentioned light-reducing film is formed on the above-described hierarchical structure by coating or sputtering.
  • the light-reducing film is positioned between the upper polarizer and the CF substrate, and the material is formed on one surface of the upper polarizer facing the CF substrate or on the side of the CF substrate facing the upper polarizer by coating or sputtering.
  • the light-reducing film is provided as a separate film between the upper polarizer and the CF substrate.
  • the normally white liquid crystal display device provided by the present invention has a light-reducing film.
  • the transmittance of the incident light and the reflected light is reduced due to the presence of the light-reducing film, thereby effectively reducing the present Some glare generated by a normally white liquid crystal display device.
  • the normally white liquid crystal display device operates, the brightness of the light emitted by the backlight is large, and the light-reducing film has little effect on the light transmission from the backlight, and although the display brightness is lowered, the problem of glare is solved. .

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

一种常白型液晶显示装置，包括：液晶显示器（101）和背光源（102），还包括减光膜（11），减光膜（11）位于液晶显示器（101）背离背光源（102）的一面、或液晶显示器（101）内、或液晶显示器（101）与背光源（102）之间、或背光源（102）内。在常白型液晶显示装置的上、下偏光片（1，5）之间以及背光源（101）均不施加电压的情况下，由于减光膜（11）的存在，降低了入射光与反射光的透过率，有效地降低了现有的常白型液晶显示装置所产生的眩目感。同时，由于反射光的透过率降低，使常白型液晶显示装置的显示背景色由灰色趋向于黑色，不仅使常白型液晶显示装置美观，更容易使大多数的人接受，而且增加了常白型液晶显示装置的使用范围。

Description

一种常白型液晶显示装置 本申请要求于 2013 年 06 月 09 日提交中国专利局、 申请号为 201310231661.0、 发明名称为 "一种常白型液晶显示装置" 的中国专利申请的 优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及液晶显示技术领域， 更具体地说， 涉及一种常白型液晶显示装 置。 背景技术
液晶显示装置分为常黑型液晶显示装置与常白型液晶显示装置。常黑型液 晶显示装置筒称 NB ( Normally Black )液晶装置， 其上、 下偏光片的极性是相 互平行的， 所以在不对上、 下偏光片间施加电压的情况下， 液晶不透光， 显示 画面为暗； 在施加电压的情况下， 液晶透光， 显示画面为亮。 而常白型液晶显 示装置筒称 NW ( Normally White ) 液晶装置， 其上、 下偏光片的极性是相互 垂直的， 所以在不对上、 下偏光片间施加电压的情况下， 液晶透光， 显示画面 为亮； 在施加电压的情况下， 液晶不透光， 显示画面为暗。 参考图 1 , 为现有的常白型液晶显示装置结构示意图， 包括液晶显示器和 背光源， 液晶显示器位于背光源上方。 其中， 液晶显示器包括上偏光片 1、 位 于上偏光片 1下方的 CF ( Color Filter, 彩色滤光）基板 2、 位于 CF基板 2下方的 液晶盒 3、 位于液晶盒 3下方的 TFT ( thin film transistor array substrate, 薄膜晶 体管阵列基板）基板 4、 位于 TFT基板 4下方的下偏光片 5。 背光源包括位于下 偏光片 5下方的扩散板 6、 位于扩散板 6下方的导光板 7、 位于导光板 7下方的反 射层 8。其中，上偏光片与下偏光片具有相同的层次结构，如图 2所示， 均包括： 保护膜 21、 位于保护膜 21下方的第一 TAC ( Triacetyl Cellulose, 三醋酸纤维素） 膜 22、 位于第一 TAC膜 22下方的 PVA ( PolyvinylAlcohol, 聚乙烯醇）膜 23、 位 于 PVA膜 23下方的第二 TAC膜 24、 位于第二 TAC膜 24下方的压敏层 25、 以及位 于压敏层 25下方的离型膜 26。
目前， 现有的液晶显示装置大多为常白型液晶显示装置， 例如， 常白型液 晶显示装置应用于台式计算机或笔记本电脑时，因为一般计算机软件运行时整 个屏幕大多是亮点， 多为白底黑字。 整个屏幕的亮点占大多数， 使用常白型液 晶显示装置不仅方便， 而且常白型液晶显示装置的亮点不需要加电压，使用时 也会比较省电。但是在对常白型液晶显示装置的背光源以及上、 下偏光片间均 不施加电压的情况下， 即当其不工作， 自然光入射时， 会反射出大量自然光， 刺激人眼， 使人产生眩目感。
发明内容
有鉴于此， 本发明提供了一种常白型液晶显示装置， 该常白型液晶显示装 置有效的降低了眩目感。
为实现上述目的， 本发明提供如下技术方案：
一种常白型液晶显示装置， 所述常白型液晶显示装置包括： 液晶显示器和 背光源，还包括减光膜， 所述减光膜位于所述液晶显示器背离所述背光源的一 面、 或所述液晶显示器内、 或所述液晶显示器与所述背光源之间、 或所述背光 源内。
优选的， 所述减光膜位于液晶显示器内， 具体的： 所述减光膜位于所述上 偏光片内、 或所述上偏光片与 CF基板之间、 或所述 CF基板与液晶盒之间、 或所述液晶盒与 TFT基板之间、 或所述 TFT基板与下偏光片之间、 或所述下 偏光片内。
优选的， 当所述减光膜位于所述液晶显示器背离所述背光源的一面、或所 述上偏光片与所述 CF基板之间、 或所述 CF基板与所述液晶盒之间、 或所述 液晶盒与所述 TFT基板之间、 或所述 TFT基板与所述下偏光片之间、 或所述 液晶显示器与所述背光源之间时， 所述减光膜的厚度范围为 0.1μηι-20μηι, 包 括端点值。
优选的， 当所述减光膜位于所述上偏光片内、 或所述下偏光片内、 或所述 背光源内时， 所述减光膜的厚度范围为 0.01mm-0.50mm, 包括端点值。
优选的， 所述减光膜的厚度为 0.1mm。
优选的， 所述减光膜位于所述上偏光片内， 具体的： 所述减光膜位于所述 上偏光片的保护膜与第一 TAC膜之间、或所述上偏光片的第一 TAC膜与 PVA 膜之间、 或所述上偏光片的 PVA膜与第二 TAC膜之间、 或所述上偏光片的第 二 TAC膜与压敏层之间、 或所述上偏光片的压敏层与离型膜之间。
优选的， 所述减光膜位于所述下偏光片内， 具体的： 所述减光膜位于所述 下偏光片的保护膜与第一 TAC膜之间、或所述下偏光片的第一 TAC膜与 PVA 膜之间、 或所述下偏光片的 PVA膜与第二 TAC膜之间、 或所述下偏光片的第 二 TAC膜与压敏层之间、 或所述下偏光片的压敏层与离型膜之间。
优选的， 所述减光膜位于所述背光源内， 具体的： 所述减光膜位于所述背 光源的扩散板与导光板之间或位于所述背光源的导光板与反射层之间。
优选的， 所述减光膜的透光率范围为 10%-90%, 包括端点值。
优选的， 所述减光膜为黑色树脂膜或灰色树脂膜。
与现有技术相比， 本发明所提供的技术方案具有以下优点： 本发明所提供的常白型液晶显示装置， 具有一层减光膜。在常白型液晶显 示装置的上、 下偏光片之间以及背光源均不施加电压的情况下， 由于减光膜的 存在， 当自然光入射时， 通过所述减光膜后会被所述减光膜吸收一部分， 当入 射自然光经过所述反射层反射出射时，再次经过所述减光膜， 又会被吸收一部 分，有效降低了出射自然光的强度，从而降低了现有的常白型液晶显示装置所 产生的眩目感。
同时， 由于反射光的透过率降低，使常白型液晶显示装置的显示背景色由 灰色趋向于黑色，不仅使常白型液晶显示装置美观，更容易使大多数的人接受， 而且增加了常白型液晶显示装置的使用范围。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍，显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付 出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为现有的常白型液晶显示装置的结构示意图；
图 2为上或下偏光片结构示意图；
图 3a-图 3j为本实施例所提供的减光膜设置位置示意图。
具体实施方式
正如背景技术所述，在对常白型液晶显示装置的背光源以及上、 下偏光片 间均不施加电压的情况下， 常白型液晶显示装置反射出大量的光， 刺激人眼， 使人产生眩目感。 发明人研究发现，造成这种缺陷的原因主要是在对常白型液晶显示装置的 背光源以及上、 下偏光片间均不施加电压的情况下， 自然光透过液晶显示装置 入射到背光源反射层，经由背光源反射层反射出大量的自然光，从而刺激人眼， 使人产生眩目感。
并且在对常白型液晶显示装置的背光源以及上、下偏光片间均不施加电压 的情况下， 常白型液晶显示装置的显示背景色为灰色， 不美观。
基于此， 本发明提供了一种常白型液晶显示装置， 所述常白型液晶显示装 置包括： 液晶显示器和背光源， 还包括减光膜， 所述减光膜位于所述液晶显示 器背离所述背光源的一面、或所述液晶显示器内、或所述液晶显示器与所述背 光源之间、 或所述背光源内。
本发明提供的常白型液晶显示装置， 具有一层减光膜。在常白型液晶显示 装置的上、 下偏光片之间以及背光源均不施加电压的情况下， 由于减光膜的存 在， 当自然光入射时， 通过所述减光膜后会被所述减光膜吸收一部分， 当入射 自然光经过所述反射层反射出射时，再次经过所述减光膜，又会被吸收一部分， 有效降低了出射自然光的强度，从而降低了现有的常白型液晶显示装置所产生 的眩目感。
同时， 由于入射光与反射光的透过率低， 进而使常白型液晶显示装置的显 示背景色由灰色趋向于黑色， 不仅使常白型液晶显示装置美观，使大多数的人 更容易接受， 而且增加了常白型液晶显示装置的使用范围。 以上是本发明的核心思想， 为使本发明的上述目的、特征和优点能够更加 明显易懂， 下面结合附图对本发明的具体实施方式做详细的说明。 在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是本发明 还可以采用其他不同于在此描述的其它方式来实施，本领域技术人员可以在不 违背本发明内涵的情况下做类似推广，因此本发明不受下面公开的具体实施例 的限制。
其次， 本发明结合示意图进行详细描述， 在详述本发明实施例时， 为便于 说明，表示装置结构的示意图会不依一般比例作局部放大， 而且所述示意图只 是示例，其在此不应限制本发明保护的范围。此外，在实际制作中应包含长度、 宽度及深度的三维空间尺寸。 本实施例提供了一种常白型液晶显示装置， 结合图 3a-3i对本实施例进行 说明。
该常白型液晶显示装置包括： 液晶显示器、 背光源、 以及减光膜， 所述减 光膜位于所述液晶显示器背离所述背光源的一面、或所述液晶显示器内、或所 述液晶显示器与所述背光源之间、 或所述背光源内。
本实施例优选的， 减光膜的透光率范围为 10%-90%, 包括端点值。 例如 减光膜的透过率为 80%时，将入射光具体拟划为 100份，在液晶显示器的上偏 光片与下偏光片之间以及背光源均不施加电压时， 100份入射光进入该常白型 液晶显示装置， 经过减光膜， 剩余 80份光入射到反射层， 经由反射层反射， 经过减光膜， 反射出 64份光， 降低了眩目感； 而当对其施加电压时， 背光源 发出的光仅一次经过减光膜， 虽然显示亮度虽有影响， 但是影响较小。 所述减 光膜为深色透明膜。 所述减光膜为黑色树脂膜或灰色树脂膜。
所述液晶显示器包括： 上偏光片 1、 CF基板 2、 液晶盒 3、 TFT基板 4、 以及下偏光片 5。 所述背光源包括： 扩散板 6、 导光板 7、 以及反射层 8。
如图 3a-3h所示， 依次为所述减光膜 11位于所述液晶显示器 101背离所 述背光源 102的一面、 所述上偏光片 1内、 所述上偏光片 1与所述 CF基板 2 之间、 所述 CF基板 2与所述液晶盒 3之间、 所述液晶盒 3与所述 TFT基板 4 之间、 所述 TFT基板 4与所述下偏光片 5之间、 所述下偏光片 5内、 所述液 晶显示器 101与所述背光源 102之间。
本实施例优选的，当所述减光膜位于所述液晶显示器背离所述背光源的一 面、 或所述上偏光片与所述 CF基板之间、 或所述 CF基板与所述液晶盒之间、 或所述液晶盒与所述 TFT基板之间、 或所述 TFT基板与所述下偏光片之间、 或所述液晶显示器与所述背光源之间时， 所述减光膜的厚度范围为 0.1μηι-20μηι, 包括端点值， 优选的厚度范围为 1μιη-2μιη, 包括端点值。 当所 述减光膜位于所述上偏光片内、 或所述下偏光片内、 或所述背光源内时， 所述 减光膜的厚度范围为 0.01mm-0.50mm, 包括端点值。 优选的， 所述减光膜的 厚度为 0.1mm。将该减光膜设置为不同位置，调整减光膜的最适合的厚度和密 度， 调整其透过率， 既不影响液晶显示器的内部结构， 同时在该常白型液晶显 示装置不工作时， 即上、 下偏光片以及背光源不施加电压时， 降低了入射的自 然光的透过率以及液晶显示装置反射出的自然光的透过率，有效的降低了眩目 感。
所述减光膜位于所述上偏光片内， 具体的， 所述减光膜位于所述上偏光片 内， 具体的： 所述减光膜位于所述上偏光片的保护膜与第一 TAC膜之间、 或 所述上偏光片的第一 TAC膜与 PVA膜之间、 或所述上偏光片的 PVA膜与第 二 TAC膜之间、 或所述上偏光片的第二 TAC膜与压敏层之间、 或所述上偏光 片的压敏层与离型膜之间。
所述减光膜位于所述下偏光片内， 具体的： 所述减光膜位于所述下偏光片 的保护膜与第一 TAC膜之间、 或所述下偏光片的第一 TAC膜与 PVA膜之间、 或所述下偏光片的 PVA膜与第二 TAC膜之间、 或所述下偏光片的第二 TAC 膜与压敏层之间、或所述下偏光片的压敏层与离型膜之间。将该减光膜设置于 上偏光片内或下偏光片内， 降低了偏光片的透光率。
上述 PVA膜经染色拉伸后制成， 该膜是偏光片的主要部分， 也称偏光原 膜， 该层决定了偏光片的偏光性能， 常白型液晶显示装置的上、 下偏光片的极 性相互垂直； 第一 TAC膜与第二 TAC膜均起到隔绝水分和空气， 保护 PVA 膜的作用； 压敏层决定了偏光片的粘着性能及贴片加工性能； 离型膜主要起保 护压敏层的作用； 保护膜为单侧涂布 EVA层的聚乙烯膜， 具有低粘性， 起到 保护第一 TAC膜的作用。 减光膜可以位于上述第一 TAC膜、 或 PVA膜、 或 第二 TAC膜、 或压敏层的任意一面， 该减光膜可以由涂布、 溅射方法形成于 上述各层的表面； 也可以为单独制成的一层膜， 设置于各层之间。
所述减光膜位于所述背光源内。 如图 3i、 3j所示， 为本实施例提供的常白 型液晶显示装置示意图， 所述减光膜 11位于所述背光源的扩散板 6与导光板 7之间或位于所述背光源的导光板 7与反射层 8之间。
需要说明的是， 上述减光膜是通过涂布或溅射方法形成于上述层次结构 的。 例如， 减光膜位于所述上偏光片与 CF基板之间， 通过涂布或溅射方法， 将材料形成于上偏光片朝向 CF基板的一面或者形成于 CF基板朝向上偏光片 的一面。 或该减光膜作为单独的膜设置于上偏光片与 CF基板之间。 本发明所提供的常白型液晶显示装置， 具有一层减光膜。在常白型液晶显 示装置的上、 下偏光片之间以及背光源均不施加电压的情况下， 由于减光膜的 存在， 降低了入射光与反射光的透过率，有效的降低了现有的常白型液晶显示 装置所产生的眩目感。 并且， 该常白型液晶显示装置工作时， 背光源发出的光 的亮度大，该减光膜对于背光源发出的光透过影响小，虽然显示亮度有所降低， 但是解决了眩目感问题。 同时， 由于反射光的透过率降低， 使常白型液晶显示 装置的显示背景色由灰色趋向于黑色， 不仅使常白型液晶显示装置美观， 更容 易使大多数的人接受， 而且增加了常白型液晶显示装置的使用范围。 对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本 发明。 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见 的， 本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在 其它实施例中实现。 因此， 本发明将不会被限制于本文所示的这些实施例， 而 是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims

1、 一种常白型液晶显示装置， 所述常白型液晶显示装置包括： 液晶显示 器和背光源， 其特征在于， 还包括减光膜， 所述减光膜位于所述液晶显示器背 离所述背光源的一面、或所述液晶显示器内、或所述液晶显示器与所述背光源 之间、 或所述背光源内。 权
2、 根据权利要求 1所述的常白利型液晶显示装置， 其特征在于， 所述减光
- I o
膜位于液晶显示器内， 具体的： 所述减光要膜位于上偏光片内、 或所述上偏光片 与 CF基板之间、 或所述 CF基板与液晶盒之求间、 或所述液晶盒与 TFT基板之 间、 或所述 TFT基板与下偏光片之间、 或所述下偏光片内。
3、 根据权利要求 2所述的常白型液晶显示装置， 其特征在于， 当所述减 光膜位于所述液晶显示器背离所述背光源的一面、 或所述上偏光片与所述 CF 基板之间、或所述 CF基板与所述液晶盒之间、或所述液晶盒与所述 TFT基板 之间、 或所述 TFT基板与所述下偏光片之间、 或所述液晶显示器与所述背光 源之间时， 所述减光膜的厚度范围为 0.1μηι-20μηι, 包括端点值。
4、 根据权利要求 2所述的常白型液晶显示装置， 其特征在于， 当所述减 光膜位于所述上偏光片内、 或所述下偏光片内、 或所述背光源内时， 所述减光 膜的厚度范围为 0.01mm-0.50mm, 包括端点值。
5、 根据权利要求 4所述的常白型液晶显示装置， 其特征在于， 所述减光 膜的厚度为 0.1mm。
6、 根据权利要求 4所述的常白型液晶显示装置， 其特征在于， 所述减光 膜位于所述上偏光片内， 具体的： 所述减光膜位于所述上偏光片的保护膜与第 一 TAC膜之间、 或所述上偏光片的第一 TAC膜与 PVA膜之间、 或所述上偏 光片的 PVA膜与第二 TAC膜之间、 或所述上偏光片的第二 TAC膜与压敏层 之间、 或所述上偏光片的压敏层与离型膜之间。
7、 根据权利要求 4所述的常白型液晶显示装置， 其特征在于， 所述减光 膜位于所述下偏光片内， 包括： 所述减光膜位于所述下偏光片的保护膜与第一
TAC膜之间、或所述下偏光片的第一 TAC膜与 PVA膜之间、或所述下偏光片 的 PVA膜与第二 TAC膜之间、 或所述下偏光片的第二 TAC膜与压敏层之间、 或所述下偏光片的压敏层与离型膜之间。
8、 根据权利要求 4所述的常白型液晶显示装置， 其特征在于， 所述减光 膜位于所述背光源内， 包括： 所述减光膜位于所述背光源的扩散板与导光板之 间或位于所述背光源的导光板与反射层之间。
9、 根据权利要求 1-8任意一项所述的常白型液晶显示装置， 其特征在于， 所述减光膜的透光率范围为 10%-90%, 包括端点值。
10、 根据权利要求 9所述的常白型液晶显示装置， 其特征在于， 所述减光 膜为黑色树脂膜或灰色树脂膜。
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Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN103605235B (zh) * 2013-11-29 2016-08-24 信利半导体有限公司 一种常白液晶显示装置及其盖板

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1319778A (zh) * 2000-03-31 2001-10-31 夏普株式会社 液晶显示器
CN101231359A (zh) * 2006-10-31 2008-07-30 三星电子株式会社 偏光片和包括其的液晶显示器
CN102295833A (zh) * 2011-06-14 2011-12-28 柯瑞林 一种纳米光学复合材料及其制备方法和应用
CN102449542A (zh) * 2009-03-30 2012-05-09 住友化学株式会社 液晶显示装置
CN102566120A (zh) * 2010-12-13 2012-07-11 三星移动显示器株式会社 具有液晶显示盖板的显示装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI447443B (zh) * 2006-02-28 2014-08-01 Fujifilm Corp 偏光板及液晶顯示器
US8371065B2 (en) * 2007-08-03 2013-02-12 Rain Bird Corporation Root watering system and method therefor
JP4640446B2 (ja) * 2008-05-26 2011-03-02 ソニー株式会社 液晶装置、カラーフィルタ基板及びアレイ基板
KR101087244B1 (ko) * 2009-09-29 2011-11-29 엘지디스플레이 주식회사 액정표시장치 및 백라이트유닛
KR101437139B1 (ko) * 2010-12-29 2014-09-02 제일모직주식회사 편광판, 광학장치 및 편광판 제조방법
KR102096554B1 (ko) * 2013-02-28 2020-04-02 엘지디스플레이 주식회사 디스플레이 장치
CN203365853U (zh) * 2013-06-09 2013-12-25 信利半导体有限公司 一种常白型液晶显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1319778A (zh) * 2000-03-31 2001-10-31 夏普株式会社 液晶显示器
CN101231359A (zh) * 2006-10-31 2008-07-30 三星电子株式会社 偏光片和包括其的液晶显示器
CN102449542A (zh) * 2009-03-30 2012-05-09 住友化学株式会社 液晶显示装置
CN102566120A (zh) * 2010-12-13 2012-07-11 三星移动显示器株式会社 具有液晶显示盖板的显示装置
CN102295833A (zh) * 2011-06-14 2011-12-28 柯瑞林 一种纳米光学复合材料及其制备方法和应用

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