CN100430807C - 凹部垂直配向模式液晶显示装置 - Google Patents

凹部垂直配向模式液晶显示装置 Download PDF

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CN100430807C
CN100430807C CNB2005100814049A CN200510081404A CN100430807C CN 100430807 C CN100430807 C CN 100430807C CN B2005100814049 A CNB2005100814049 A CN B2005100814049A CN 200510081404 A CN200510081404 A CN 200510081404A CN 100430807 C CN100430807 C CN 100430807C
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金成云
崔祥彦
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Hydis Technologies Co Ltd
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    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
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    • 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 
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    • 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
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    • G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells

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Abstract

一种VVA模式液晶显示装置，其能够提高透过率和应答速度。该VVA模式液晶显示装置具有：下部基板以及上部基板，其隔开规定距离相对配置；液晶层，其介于所述上下部基板间，且介电常数各向异性为负(-)；彩色树脂层，其形成在所述上部基板的内侧面上，具有规则地形成在各单位像素的内部的规定个数的凹部(Valley)；对向电极，其形成在含有所述凹部的彩色树脂层上；像素电极，其形成在所述下部基板的内侧面上，具有以所述上部基板的凹部为中心配置在凹部的内部和其周围而形成的“+”形态的缝隙；配向膜，其分别介于所述像素电极和液晶层之间以及对向电极和液晶层之间，其特征在于，凹部以环(Ring)的形态形成，通过缩小所述凹部和缝隙图案之间的间隔在凹部的内部和外部都具有透过率，从而防止透过率损失以及色彩再现性降低。

Description

凹部垂直配向模式液晶显示装置
技术领域
本发明涉及一种VVA(Valley Vertical Align：凹部垂直配向)模式液晶显示装置，更加详细地，涉及能够提高透过率以及应答速度的VVA液晶显示装置。
背景技术
液晶显示装置(Liquid Crystal Display)取代CRT(Cathode-ray tube：阴极射线管)而正在被开发。特别是，薄膜晶体管液晶显示装置由于实现了可与上述CRT相匹敌的显示画面的高图像质量、大型化以及彩色化等，所以在笔记本PC以及显示器市场上受到广大青睐，进而，可以设想其将垄断电视市场。
一般，使用垂直配向的液晶显示装置将施加在上部基板和下部基板的电场歪曲而将液晶配向在两个或四个方向上提高视场角。以往，VVA(ValleyVertical Align：凹部垂直配向)模式提案有针对风车(Pinwheel)结构的形态，但是，其是由使电场歪曲成圆形以风车形态驱动液晶的结构来提高视场角的方法。在上述上部基板上设置突起和缝隙(Slit)等倾斜源(TiltingSource)而取而代之的是，通过形成使液晶以风车形态放倒的倾斜源即凹部(Valley)，能够提高视场角。
另外，代替在上述基板上形成突起的工序，而进行在上部基板或下部基板上以圆形形成槽而形成凹部的工序，所以能够在上部基板上形成滤色片并且形成凹部，能够使工序单纯化，通过在凹部的中心形成旋转位移线，从而降低透过率的损失。
下面说明现有的VVA(Valley Vertical Align：凹部垂直配向)模式液晶显示装置。
虽然未作图示，但是现有的分别具有像素电极和对向电极的下部基板和上部基板在介电常数各向异性的负(-)的液晶层介于其间的情况下进行粘合，在介于上述下部基板和液晶层之间以及上部基板和液晶层之间分别设置垂直配向膜，并且，偏振板附着在基板等的相对面的背面的各个之上，它们的各偏振轴相互交叉。
另外，在介于上述上部基板和对向电极之间设置用于呈现色彩的红(R)、绿(G)以及蓝(B)的彩色树脂层，这时，上述彩色树脂层上与像素对应的每个部分规则地形成规定个数、例如2～10个凹部(Valley)。
但是，如图1A所示，以上述凹部3为中心生成任意的旋转位移线(A)。这样，使透过率减少、应答特性降低。在此，附图标记1表示像素电极，附图标记2表示缝隙图案、附图标记4表示液晶。
另外，如图1B所示，在上部基板的中心部形成多个凹部3，从而提供倾斜源，由此，造成透过率损失以及色彩特性损失。在此，附图标记6表示数据线，附图标记7表示栅线(ゲ一トライン)，附图标记8表示薄膜晶体管。即，凹部和缝隙之间的距离对驱动安全性以及应答速度有影响，若凹部和缝隙之间的距离远离，则使驱动安全性和应答速度降低。因此，为了驱动安全性和快速的应答速度必须增大凹部的尺寸。由此，在色彩再现性上存在问题。
发明内容
本发明是鉴于上述问题而研发的，其目的在于提供一种VVA模式液晶显示装置，其能够提高透过率和应答速度。
为解决上述问题，本发明的VVA模式液晶显示装置具有：一种凹部垂直配向模式液晶显示装置，其具有：下部基板以及上部基板，在它们之间具有间隔地相对配置；液晶层，其介于所述上下部基板间，且介电常数各向异性为负；彩色树脂层，其形成在所述上部基板的内侧面上，具有规则地形成在各单位像素的内部的多个凹部；对向电极，其形成在含有所述凹部的彩色树脂层上；像素电极，其形成在所述下部基板的内侧面上，并且对应所述凹部设置，所述像素电极被构图为具有缝隙图案，其中，当俯视所述上部基板时，缝隙以“+”、钩形态以及条纹形态中的任一个形态形成在所述凹部的内部和外部；配向膜，其分别介于所述像素电极和液晶层之间以及对向电极和液晶层之间，其特征在于，凹部以环的形态形成，减少所述凹部和缝隙图案之间的间隔而在所述凹部的内部和外部都具有透过率。
在此，所述凹部以圆形或多边形的环形态形成。
位于上述上部基板的凹部的内部以及外部而形成的缝隙以各不相同的形态形成。其形成在用于控制在凹部和缝隙之间形成的电场方向的方向上。
本发明的另一VVA模式液晶显示装置具有：下部基板以及上部基板，在它们之间具有间隔地相对配置；液晶层，其介于所述上下部基板间，且介电常数各向异性为负；彩色树脂层，其形成在所述上部基板的内侧面上，具有规则地形成在各单位像素的内部的多个凹部；对向电极，其形成在含有所述凹部的彩色树脂层上；像素电极，其形成在所述下部基板的内侧面上，并且相对于所述凹部设置，所述像素电极被构图为具有缝隙图案，其中，当俯视所述上部基板时，缝隙形成在所述凹部的内部和外部；配向膜，其分别介于所述像素电极和液晶层之间以及对向电极和液晶层之间，其特征在于，凹部以环的形态形成，减少所述凹部和缝隙图案之间的间隔而在所述凹部的内部和外部都具有透过率，缝隙以“+”的形态位于所述上部基板的凹部的内部以及外部。
如上所述，本发明中，以环形态形成在上部基板上形成的凹部，将像素电极的缝隙图案形成在凹部的内部以及外部，缩小凹部和缝隙图案之间的间隔，从而，能够在凹部的内部以及外部都能够具有透过率，防止透过率损失和色彩再现性降低。由此，能够提高液晶显示装置的透过率和确保驱动安全性，从而提高应答速度。
附图说明
图1A～图1B是表示现有的VVA模式液晶显示装置的问题点的说明图；
图2是说明本发明的一实施方式的VVA模式液晶显示装置的剖面图；
图3是说明本发明的一实施方式的VVA模式液晶显示装置的像素的平面图；
图4是表示本发明的一实施方式的VVA模式液晶显示装置的子像素的图示。
具体实施方式
下面参照附图详细说明本发明的优选实施方式。
图2是用于说明本发明的一实施方式的VVA模式液晶显示装置的剖面图。
如图2所示，本发明的VVA液晶显示装置具有上部基板31和下部基板21。上述上部基板31在内侧面上形成含有凹部(Valley)的彩色树脂层32，在上述彩色树脂层32上形成对向电极33，在上述对向电极33上形成配向膜34；上述下部基板21在内侧面上形成绝缘膜22，在上述绝缘膜22上形成含有缝隙的像素电极23，在上述像素电极23上形成配向膜。在介于上述上下部基板间设置介电常数各向异性为负(-)的液晶层50。另外，上述下部基板21和上部基板31的相对面的背面的各个之上附着偏振板(未图示)，此时，上述上下偏振板的偏振轴相互交叉。
如图3所示，本发明中，为提高透过率以及应答速度，以环(Ring)形态形成上述凹部35。另外，与上述上部基板31的凹部对应的下部基板21的像素电极23上形成缝隙图案25，在环形态的凹部35的内部以及外部都缩小凹部与缝隙图案25之间的间隔，从而，能够在凹部的内部也具有透过率，提高透过率并确保驱动安全性，从而提高应答速度。这时，上述缝隙图案25以“+“形态形成，或者，为减少视场角以及旋转位移线，以钩或条纹形态形成。
图4是表示本发明的一实施方式的VVA模式液晶显示装置的子像素的图。
如图4所示，上述栅线70以及数据线80相互交叉形成，栅线70和数据线80交叉的部分形成薄膜晶体管(TFT)60。在与上述上部基板31的凹部对应的下部基板21的像素电极23上形成缝隙图案25，在凹部35的内部以及外部以“+”、钩形态以及条纹形态中的任一个形态形成像素电极23的缝隙图案25。
上面举例说明了本发明，但是本发明不限于此，显然本发明所属的技术领域内具有通常知识的本领域技术人员可以在不脱离本发明要旨的范围内进行修改和变形。

Claims (3)

1.一种凹部垂直配向模式液晶显示装置，其具有：下部基板以及上部基板，在它们之间具有间隔地相对配置；液晶层，其介于所述上下部基板间，且介电常数各向异性为负；彩色树脂层，其形成在所述上部基板的内侧面上，具有规则地形成在各单位像素的内部的多个凹部；对向电极，其形成在含有所述凹部的彩色树脂层上；像素电极，其形成在所述下部基板的内侧面上，并且对应所述凹部设置，所述像素电极被构图为具有缝隙图案，其中，当俯视所述上部基板时，缝隙以“+”、钩形态以及条纹形态中的任一个形态形成在所述凹部的内部和外部；配向膜，其分别介于所述像素电极和液晶层之间以及对向电极和液晶层之间，其特征在于，凹部以环的形态形成，减少所述凹部和缝隙图案之间的间隔而在所述凹部的内部和外部都具有透过率。
2.如权利要求1所述的凹部垂直配向模式液晶显示装置，其特征在于，所述凹部以圆形或多边形的环形态形成。
3.一种凹部垂直配向模式液晶显示装置，其具有：下部基板以及上部基板，在它们之间具有间隔地相对配置；液晶层，其介于所述上下部基板间，且介电常数各向异性为负；彩色树脂层，其形成在所述上部基板的内侧面上，具有规则地形成在各单位像素的内部的多个凹部；对向电极，其形成在含有所述凹部的彩色树脂层上；像素电极，其形成在所述下部基板的内侧面上，并且相对于所述凹部设置，所述像素电极被构图为具有缝隙图案，其中，当俯视所述上部基板时，缝隙形成在所述凹部的内部和外部；配向膜，其分别介于所述像素电极和液晶层之间以及对向电极和液晶层之间，其特征在于，凹部以环的形态形成，减少所述凹部和缝隙图案之间的间隔而在所述凹部的内部和外部都具有透过率，缝隙以“+”的形态位于所述上部基板的凹部的内部以及外部。
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KR100701074B1 (ko) * 2003-06-12 2007-03-29 비오이 하이디스 테크놀로지 주식회사 액정표시장치
JP4745013B2 (ja) * 2005-10-07 2011-08-10 三菱電機株式会社 液晶表示装置
US8885127B2 (en) * 2010-06-10 2014-11-11 Sharp Kabushiki Kaisha Liquid crystal display device and method for fabricating the same
KR102059641B1 (ko) 2013-03-06 2019-12-27 삼성디스플레이 주식회사 액정 표시 장치
KR102106007B1 (ko) 2013-08-26 2020-05-04 삼성디스플레이 주식회사 액정 표시 장치
CN104199224A (zh) * 2014-09-18 2014-12-10 深圳市华星光电技术有限公司 一种液晶显示面板
WO2018079411A1 (ja) * 2016-10-28 2018-05-03 シャープ株式会社 液晶表示装置

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US6342938B1 (en) * 1998-05-19 2002-01-29 Samsung Electronics Co., Ltd. Liquid crystal display having electrodes with apertures wherein the apertures have different shapes
CN1477426A (zh) * 2002-06-27 2004-02-25 ��������ʾ���Ƽ���˾ Vva模式的液晶显示装置

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KR20060053562A (ko) 2006-05-22
JP4217915B2 (ja) 2009-02-04
CN1776507A (zh) 2006-05-24
TW200617540A (en) 2006-06-01
TWI282894B (en) 2007-06-21
KR100719920B1 (ko) 2007-05-18
US7064348B2 (en) 2006-06-20

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