CN104698696A - 一种阵列基板、液晶面板及显示装置 - Google Patents

一种阵列基板、液晶面板及显示装置 Download PDF

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CN104698696A
CN104698696A CN201510137036.9A CN201510137036A CN104698696A CN 104698696 A CN104698696 A CN 104698696A CN 201510137036 A CN201510137036 A CN 201510137036A CN 104698696 A CN104698696 A CN 104698696A
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electrode
liquid crystal
display device
slit
base palte
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韩帅
王建
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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Priority to CN201510137036.9A priority Critical patent/CN104698696A/zh
Publication of CN104698696A publication Critical patent/CN104698696A/zh
Priority to PCT/CN2015/088826 priority patent/WO2016150106A1/zh
Priority to US14/913,275 priority patent/US10042228B2/en
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    • G—PHYSICS
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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 
    • 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
    • G02F1/137—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
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    • 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
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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 
    • 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
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    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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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
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    • 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
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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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
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    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
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    • G—PHYSICS
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    • 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
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    • 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
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Abstract

本发明公开了一种阵列基板、液晶面板及显示装置，以改善显示装置的残影现象，提高显示装置的显示品质。阵列基板包括由多条栅线和多条数据线交叉界定的呈阵列排布的多个像素单元，每个像素单元对应包含有薄膜晶体管、板状电极以及位于板状电极上方的狭缝电极，狭缝电极包括多个电极条，相邻的电极条之间具有狭缝，其中，狭缝电极的各条狭缝的两端分别具有拐角。拐角设计可以减小狭缝宽度，从而增大控制液晶分子偏转的电场强度。当显示装置进行画面内容切换时，大部分液晶分子能够迅速偏转，从而使得光效增大，暗区减弱，并且，暗区不会产生移位，可以设计地被黑矩阵遮挡，因此，在宏观上不可见。

Description

一种阵列基板、液晶面板及显示装置
技术领域
本发明涉及显示技术领域，特别是涉及一种阵列基板、液晶面板及显示装置。
背景技术
在平板显示装置中，薄膜晶体管液晶显示器(Thin Film Transistor LiquidCrystal Display，TFT-LCD)具有体积小、功耗低、制造成本相对较低和无辐射等特点，在当前的平板显示器市场占据了主导地位。
目前，TFT-LCD的显示模式主要有TN(Twisted Nematic，扭曲向列)模式、VA(Vertical Alignment，垂直取向)模式、IPS(In-Plane-Switching，平面方向转换)模式和AD-SDS(ADvanced Super Dimension Switch，高级超维场转换技术，简称ADS)模式等。
其中，基于ADS模式的显示器通过同一平面内狭缝电极边缘所产生的电场以及狭缝电极与板状电极间产生的电场形成多维电场，使液晶盒内狭缝电极间、电极正上方的取向液晶分子产生旋转，从而提高了液晶工作效率并增大了透光效率。高级超维场转换技术可以提高TFT-LCD产品的画面品质，具有高分辨率、高透过率、低功耗、宽视角、高开口率、低色差、无挤压水波纹(pushMura)等优点。
ADS模式的阵列基板通常包括呈阵列排布的多个像素单元，每个像素单元对应包含有薄膜晶体管、栅线、数据线、板状电极以及位于板状电极上方的狭缝电极，狭缝电极包括多个电极条，相邻的电极条之间具有狭缝。
图1a为现有技术中像素单元右下方的狭缝区域的液晶分子偏转及模拟光效示意图；图1b为现有技术中液晶面板对应像素单元右下方的狭缝区域的截面示意图；图1c为现有技术中像素单元的实际点亮图。如图1a和图1b所示，现有ADS模式的显示装置在显示时，由于该部分狭缝的宽度较大，这使得电场对某些位置的液晶分子的锚定力比较弱，如果显示装置进行画面内容的切换，则这些位置液晶分子的偏转角度会比较小，从而产生暗区。如图1c所示，像素单元在实际点亮时，该暗区会沿着液晶分子的取向方向移动较大的位移，从而无法被黑矩阵遮挡。宏观上，从显示装置的屏幕会看到残影，这严重影响到用户的视觉体验。
发明内容
本发明实施例的目的是提供一种阵列基板、液晶面板及显示装置，以改善显示装置的残影现象，提高显示装置的显示品质。
本发明实施例提供了一种阵列基板，包括由多条栅线和多条数据线交叉界定的呈阵列排布的多个像素单元，每个像素单元对应包含有薄膜晶体管、板状电极以及位于板状电极上方的狭缝电极，所述狭缝电极包括多个电极条，相邻的电极条之间具有狭缝，其中，所述狭缝电极的各条狭缝的两端分别具有拐角。
在本发明实施例的技术方案中，狭缝电极的各条狭缝的两端分别具有拐角，拐角形状设计可以减小狭缝宽度，从而增大控制液晶分子偏转的电场强度。当显示装置进行画面内容切换时，大部分液晶分子能够迅速偏转，从而使得光效增大，暗区减弱，并且，暗区不会产生移位，可以设计地被黑矩阵遮挡，因此，在宏观上不可见。通过该方案，可以显著改善显示装置的残影现象，提高显示装置的显示品质。
优选的，靠近所述栅线的拐角朝向所述数据线，远离所述栅线的拐角背向所述数据线。采用该结构设计，像素单元开口区的液晶分子旋向基本相同，液晶分子的排列较为统一、整齐、规则。
优选的，所述拐角角度为30度～60度。
更优的，所述拐角角度为45度。
优选的，所述狭缝电极中，位于边界的电极条覆盖所述数据线，且所述位于边界的电极条的每一侧边至所述数据线的距离≥3.0微米。
优选的，所述狭缝的宽度≥3.6微米。
本发明实施例还提供了一种液晶面板，包括：如前述任一技术方案所述的阵列基板。将该液晶面板应用于显示装置，残影现象可以被较好的改善，从而使显示装置具有较佳的显示品质。
本发明实施例还提供了一种显示装置，包括前述实施例所述的液晶面板。该显示装置无残影现象，具有较高的显示品质。
附图说明
图1a为现有技术中像素单元右下方的狭缝区域的液晶分子偏转及模拟光效示意图；
图1b为现有技术中液晶面板对应像素单元右下方的狭缝区域的截面示意图；
图1c为现有技术中像素单元的实际点亮图；
图2a为本发明一实施例阵列基板的像素结构示意图；
图2b为本发明另一实施例阵列基板的像素结构示意图；
图3a为本发明实施例中像素单元右下方的狭缝区域的液晶分子偏转及模拟光效示意图；
图3b为本发明实施例中液晶面板对应像素单元右下方的狭缝区域的截面示意图；
图3c为本发明实施例中像素单元的实际点亮图。
附图标记：
10-薄膜晶体管；
1-栅线；
2-数据线；
3-板状电极；
4-狭缝电极；
5-电极条；
6-狭缝；
7-暗区；
8-拐角。
具体实施方式
为了改善显示装置的残影现象，提高显示装置的显示品质，本发明实施例提供了一种阵列基板、液晶面板及显示装置。为使本发明的目的、技术方案和优点更加清楚，以下举实施例对本发明作进一步详细说明。
说明书附图中，图2a为本发明一实施例阵列基板的像素结构示意图；图2b为本发明另一实施例阵列基板的像素结构示意图；图3a为本发明实施例中像素单元右下方的狭缝区域的液晶分子偏转及模拟光效示意图；图3b为本发明实施例中液晶面板对应像素单元右下方的狭缝区域的界面示意图；图3c为本发明实施例中像素单元的实际点亮图。
本发明实施例提供的阵列基板，包括由多条栅线1和多条数据线2交叉界定的呈阵列排布的多个像素单元，如图2a和图2b所示，每个像素单元对应包含有薄膜晶体管10、板状电极3以及位于板状电极3上方的狭缝电极4，狭缝电极4包括多个电极条5，相邻的电极条5之间具有狭缝6，其中，狭缝电极4的各条狭缝6的两端分别具有拐角8。
阵列基板上通常沿第一方向(例如行方向)设置有一组栅线，沿第二方向(例如列方向)设置有一组数据线，这一组栅线和一组数据线交叉设置，界定了呈阵列排布的多个像素单元。具体的，每个像素单元中，薄膜晶体管的栅极与栅线连接，源极与数据线连接，漏极与板状电极连接。在本发明的下述各实施例中，所提及的薄膜晶体管10、栅线1、数据线2、板状电极3、狭缝电极4等均是相对同一像素单元而言的。
对比图3a和图1a，现有技术中，液晶面板通电后，靠近数据线的狭缝在靠近栅线的一端(通常位于像素单元的右下方)，其中间区域的液晶分子由于受到不同方向电场的驱动，几乎不偏转，会产生暗区；而右侧区域由于距离中间区域较近，液晶分子受反方向电场的干扰也比较大，因此，液晶分子的偏转也比较小，从而产生短暗区。采用本发明实施例的像素结构后，靠近数据线的狭缝在靠近栅线的一端，由于狭缝宽度增大，狭缝中受不同方向电场驱动的区域也相应减小，从而使得液晶分子的偏转增大，因此中间区域的暗区变弱。此外，拐角设计增大了右侧区域，这使得右侧区域的液晶分子受反方向电场的干扰减小，偏转增大，从而减弱了短暗区。对比图1b和图3b也可看出，本发明实施例的设计拉近了电极条之间的距离，从而使得该区域的电场强度增加，对液晶分子的锚定力增强，从而尽增大了液晶分子的偏转角度。
综上，拐角设计可以使狭缝的宽度相比现有技术有所减小(也就是狭缝两侧的电极条间距减小)。将本实施例方案的阵列基板应用于液晶面板中，液晶面板通电后，该区域的电场强度增强，因此对液晶分子的锚定力增强。当显示装置进行画面内容切换时，大部分液晶分子能够迅速偏转，从而使得光效增大，暗区减弱，并且，暗区不会产生移位，可以设计地被黑矩阵遮挡，因此，在宏观上不可见。通过该方案，可以显著改善显示装置的残影现象，提高显示装置的显示品质。
此外，暗区的减弱也有利于减小黑矩阵的线宽，从而有利于提高像素单元的开口率(像素单元的开口率是指像素可发光面积占像素面积的比率，是决定像素单元透过率的主要因素)，进而提高液晶面板的透过率。
如图3c所示，采用上述实施例结构后，像素单元的暗区7变短变弱，并且可以设计的被黑矩阵阻挡(图中黑矩阵未示出)，暗区7也不会产生移动，因此，可以显著的改善显示装置的残影现象。
请继续参照图2a和图2b所示，靠近栅线1的拐角8朝向数据线2，远离栅线1的拐角8背向数据线2。采用该结构设计，像素单元开口区的液晶分子旋向基本相同，液晶分子的排列较为统一、整齐、规则。
本申请的发明人通过大量实验后发现，优选的，在阵列基板的像素结构中，将拐角8的角度α设计为30度～60度，可以使液晶分子的排列较为有序、规则，其中，拐角角度设计为45度时效果更佳。狭缝电极4中，位于边界的电极条覆盖数据线2，且位于边界的电极条的每一侧边至数据线2的距离l≥3.0微米，这样可以减少数据线2对狭缝内电场的影响。狭缝电极4的狭缝宽度s≥3.6微米。通过以上设计，可以较大限度的减弱暗区，改善残影现象，以使显示装置的显示品质更佳。
本发明实施例还提供了一种液晶面板，包括：如前述任一实施例的阵列基板。将该液晶面板应用于显示装置，残影现象可以被较好的改善，从而使显示装置具有较佳的显示品质。
本发明实施例还提供了一种显示装置，包括前述实施例的液晶面板。该显示装置无残影现象，具有较高的显示品质。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (8)

1.一种阵列基板，包括由多条栅线和多条数据线交叉界定的呈阵列排布的多个像素单元，每个像素单元对应包含有薄膜晶体管、板状电极以及位于板状电极上方的狭缝电极，所述狭缝电极包括多个电极条，相邻的电极条之间具有狭缝，其特征在于：
所述狭缝电极的各条狭缝的两端分别具有拐角。
2.如权利要求1所述的阵列基板，其特征在于，靠近所述栅线的拐角朝向所述数据线，远离所述栅线的拐角背向所述数据线。
3.如权利要求1或2所述的阵列基板，其特征在于，所述拐角角度为30度～60度。
4.如权利要求3所述的阵列基板，其特征在于，所述拐角角度为45度。
5.如权利要求1或2所述的阵列基板，其特征在于，所述狭缝电极中，位于边界的电极条覆盖所述数据线，且所述位于边界的电极条的每一侧边至所述数据线的距离≥3.0微米。
6.如权利要求1或2所述的阵列基板，其特征在于，所述狭缝的宽度≥3.6微米。
7.一种液晶面板，其特征在于，包括：如权利要求1～6任一项所述的阵列基板。
8.一种显示装置，其特征在于，包括如权利要求7所述的液晶面板。
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