CN104483787A - 一种阵列基板、显示装置 - Google Patents

一种阵列基板、显示装置 Download PDF

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CN104483787A
CN104483787A CN201410856599.9A CN201410856599A CN104483787A CN 104483787 A CN104483787 A CN 104483787A CN 201410856599 A CN201410856599 A CN 201410856599A CN 104483787 A CN104483787 A CN 104483787A
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electrode
transparency electrode
switch pipe
signal
switching tube
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CN104483787B (zh
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唐岳军
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to PCT/CN2015/070940 priority patent/WO2016106873A1/zh
Priority to US14/418,199 priority patent/US9939690B2/en
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Abstract

本发明公开了一种阵列基板、显示装置，属于显示技术领域，可明显克服显示装置的残像缺陷。该阵列基板包括阵列排布的多个亚像素单元，各亚像素单元包括相互配合的第一透明电极和第二透明电极、第一开关管和第二开关管；所述第一开关管连接所述第一透明电极，为所述第一透明电极提供像素电极信号或公共电极信号；所述第二开关管连接所述第二透明电极，为所述第二透明电极提供公共电极信号或像素电极信号；所述第一开关管和所述第二开关管提供的信号不同，每经过一定时长，所述第一开关管和所述第二开关管所提供的信号互换。本发明可用于液晶电视、液晶显示器、手机、平板电脑等显示装置。

Description

一种阵列基板、显示装置
技术领域
本发明涉及显示技术领域，具体地说，涉及一种阵列基板、显示装置。
背景技术
在平板显示器中，液晶显示面板(Liquid Crystal Display，简称LCD)由于具有装置薄、重量轻、功耗低、低电磁发射等诸多优点，被广泛应用于如手机、计算机、电视和个人数字助理(Personal Digital Assistant，简称PDA)等信息装置上。
残像是现今LCD存在的显著缺陷之一。所谓残像是指LCD长时间显示同一固定的画面，当切换至下一个画面时，会隐约残留上一个画面的图像。这是因为LCD内的极性粒子会沿着电场方向往LCD的上下基板移动，聚集在上下基板表面上，聚集的极性粒子会产生直流残留电压。当极性粒子的浓度产生的直流残留电压足以影响液晶盒内的液晶分子的偏转角度时，会使LCD的显示出现差异。因此切换至下一个画面时，聚集的极性粒子仍残存在基板表面，继续保持原来的图像，因此出现图像残留。
为了克服LCD存在残像的缺陷，现有技术中，可通过优化制程环境和条件，以减少LCD中杂质的含量；可通过优化材料选择，例如选择污染性小的封装材料、选择稳定性好和极性粒子含量少的液晶材料或选择适当的配向膜，以此减少LCD内极性粒子的含量；可通过调整伽马电压，以减小LCD内的不同位置的公共电极信号的差异，进而减小不同灰阶的公共电极信号的差异，找到最适合的克服残像的黑白电压。
发明人发现，现有技术中所采用的克服残像缺陷的方法受限于材料、制程、人工误差等因素，无法很好地克服LCD的残像缺陷。
发明内容
本发明的目的在于提供一种阵列基板、显示装置，可明显地克服显示装置的残像缺陷。
本发明第一方面提供了一种阵列基板，该阵列基板包括阵列排布的多个亚像素单元，各亚像素单元包括相互配合的第一透明电极和第二透明电极、第一开关管和第二开关管；
所述第一开关管连接所述第一透明电极，为所述第一透明电极提供像素电极信号或公共电极信号；所述第二开关管连接所述第二透明电极，为所述第二透明电极提供公共电极信号或像素电极信号；所述第一开关管和所述第二开关管提供的信号不同，每经过预设时长，所述第一开关管和所述第二开关管所提供的信号互换。
进一步的，每经过第一预设时长，所述第一开关管由提供像素电极信号变为提供公共电极信号，所述第二开关管由提供公共电极信号变为提供像素电极信号；
每经过第二预设时长，所述第一开关管由提供公共电极信号变为提供像素电极信号，所述第二开关管由提供像素电极信号变为提供公共电极信号。
进一步的，各亚像素单元对应设置有第一数据线、第一栅线和第二数据线、第二栅线，其中，
所述第一数据线连接所述第一开关管的源极，所述第一栅线连接所述第一开关管的栅极；
所述第二数据线连接所述第二开关管的源极，所述第二栅线连接所述第二开关管的栅极。
进一步的，各亚像素单元对应设置有数据线、第一栅线和第二栅线，其中，
所述数据线连接所述第一开关管和所述第二开关管的源极，所述第一栅线连接所述第一开关管的栅极，所述第二栅线连接所述第二开关管的栅极。
进一步的，各亚像素单元对应设置有第一数据线、第二数据线和栅线，其中，
所述第一数据线连接所述第一开关管的源极，所述第二数据线连接所述第二开关管的源极，所述栅线连接所述第一开关管和所述第二开关管的栅极。
进一步的，所述第一透明电极为狭缝电极，所述第二透明电极为板状电极，所述第一透明电极位于所述第二透明电极之上。
进一步的，所述第一透明电极和所述第二透明电极均为狭缝电极，且所述第一透明电极和所述第二透明电极交错设置。
进一步的，所述预设时长小于或等于残像出现所需的时长。
本发明带来了以下有益效果：本发明实施例的技术方案提供了一种阵列基板，该阵列基板的每一亚像素单元包括相互配合的第一透明电极和第二透明电极，并且设置有第一开关管和第二开关管。第一开关管连接第一透明电极，为第一透明电极提供像素电极信号或公共电极信号；第二开关管连接第二透明电极，为第二透明电极提供公共电极信号或像素电极信号；第一开关管和第二开关管提供的信号不同，且每经过预设时长，第一开关管和第二开关管所提供的信号互换。每一次第一透明电极和第二透明电极提供的信号互换后，被前一阶段的第一透明电极吸引而聚集的极性粒子将散开，或极性粒子所带的电荷被中和；第二透明电极的情况相同。如此，可从本质上防止由极性粒子积累导致的残像缺陷的出现，提高了显示装置的成像质量。
本发明第二方面提供了一种显示装置，该显示装置包括上述的阵列基板。
进一步的，该显示装置还包括与阵列基板对盒设置的彩膜基板。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要的附图做简单的介绍：
图1是本发明实施例提供的阵列基板的结构示意图；
图2至4是本发明实施例提供的亚像素单元的结构示意图一至三；
图5是本发明实施例提供的信号时序图；
图6至7是本发明实施例提供的第一透明电极和第二透明电极的配合示意图；
图8是本发明实施例提供的亚像素单元的结构示意图四。
附图标记说明：
1—亚像素单元；  2—第一透明电极；  3—第二透明电极；
4—极性粒子；    5—绝缘层；        6—配向膜。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例以及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
本实施例中提供了一种阵列基板，如图1所示，该阵列基板包括阵列排布的多个亚像素单元1。如图2所示，各亚像素单元1包括相互配合的第一透明电极2和第二透明电极3、第一开关管T1和第二开关管T2。
具体的，第一开关管T1连接第一透明电极2，为第一透明电极2提供像素电极信号或公共电极信号；第二开关管T2连接第二透明电极3，为第二透明电极3提供公共电极信号或像素电极信号；第一开关管T1和第二开关管T2提供的信号不同，每经过一定时长，第一开关管T1和第二开关管T2所提供的信号互换。
在本发明实施例中，如图2所示，各亚像素单元1包括第一开关管T1和第二开关管T2，且第一开关管T1和第二开关管T2分别对应第一透明电极2和第二透明电极3设置。即第一开关管T1的漏极连接第一透明电极2，为第一透明电极2提供信号；第二开关管T2的漏极连接第二透明电极3，为第二透明电极3提供信号。
相应的，如图2所示，各亚像素单元1对应设置有第一数据线D1、第一栅线G1和第二数据线D2、第二栅线G2。其中，第一数据线D1连接第一开关管T1的源极，第一栅线G1连接第一开关管T1的栅极；第二数据线D2连接第二开关管T2的源极，第二栅线G2连接第二开关管T2的栅极。
如图2所示，第一数据线D1和第二数据线D2可分别设置在亚像素单元1的左右两侧，第一栅线G1和第二栅线G2可分别设置在亚像素单元1的上下两侧。此时，第一开关管T1可位于第一数据线D1和第一栅线G1相交处，例如图2中的亚像素单元1的左上角；相应的，第二开关管T2可位于第二数据线D2和第二栅线G2相交处，例如图2中的亚像素单元1的右下角。显然，若是改变图2中的第一数据线D1、第一栅线G1、第二数据线D2、第二栅线G2中部分或全部的位置，则第一开关管T1和第二开关管T2在亚像素单元1中的位置也可能发生改变，本发明实施例对此不进行限制。
其中，第一开关管T1、第二开关管T2优选为薄膜晶体管(Thin FilmTransistor，简称TFT)。
为了提高各亚像素单元1的开口率，如图3所示，各亚像素单元1可仅对应设置有数据线D0、第一栅线G1和第二栅线G2。其中，数据线D0连接第一开关管T1和第二开关管T2的源极，第一栅线G1连接第一开关管T1的栅极，第二栅线G2连接第二开关管T2的栅极。
此时，数据线D0为第一开关管T1和第二开关管T2共用，数据线D0间隔输出第一开关管T1和第二开关管T2对应的电极信号。即当第一栅线G1上有栅极驱动信号时，数据线D0应输出对应第一开关管T1的电极信号；当第二栅线G2上有栅极驱动信号时，数据线D0应输出对应第二开关管T2的电极信号。以保证第一透明电极2和第二透明电极3可获取到对应的电极信号，使得该阵列基板可正常工作。
类似的，如图4所示，各亚像素单元1也可仅对应设置有第一数据线D1、第二数据线D2和栅线G0。其中，第一数据线D1连接第一开关管T1的源极，第二数据线D2连接第二开关管T2的源极，栅线G0连接第一开关管T1和第二开关管T2的栅极。
此时，栅线G0为第一开关管T1和第二开关管T2共用，第一开关管T1和第二开关管T2被栅线G0同时驱动，第一数据线D1为第一开关管T1提供电极信号，第二数据线D2为第二开关管T2提供电极信号。如此，即可保证第一透明电极2和第二透明电极3获取到对应的电极信号。
具体的，在本发明实施例中，每经过第一预设时长t1，第一开关管T1由提供像素电极信号变为提供公共电极信号，第二开关管T2由提供公共电极信号变为提供像素电极信号；每经过第二预设时长t2，第一开关管T1由提供公共电极信号变为提供像素电极信号，第二开关管T2由提供像素电极信号变为提供公共电极信号。第一预设时长t1和第二预设时长t2可以相等，也可以不等，但应保证第一预设时长t1、第二预设时长t2小于或等于残像出现所需的时长，以防止包括该阵列基板的显示装置出现残像。第一预设时长t1、第二预设时长t2可为显示一帧画面所需的时长，可为几秒钟、几分钟甚至达到一个小时。残像出现所需的时长与显示装置有关，本发明实施例不对此进行限制。
在本发明实施例中，如图2、3或4所示，该阵列基板的驱动方式可为边缘场开关技术型(Fringe Field Switching简称FFS)。所谓FFS，其核心技术特性描述为：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层间产生的电场形成多维电场，使液晶盒内狭缝电极间、电极正上方所有取向液晶分子都能够产生旋转，从而提高了液晶工作效率并增大了透光效率。FFS可以提高液晶显示面板等显示装置的画面品质，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(push Mura)等优点。
因此，第一透明电极2可设置为狭缝电极，相应的第二透明电极3设置为板状电极，此时，第一透明电极2位于第二透明电极3之上。为了保证第一透明电极2和第二透明电极3之间绝缘，第一透明电极2和第二透明电极3之间设置有绝缘层5。
另外，第一透明电极2和第二透明电极3之上还覆盖有一层配向膜6，用于给液晶分子提供一个预倾角，使得液晶分子的旋转方向一致性更好。在本发明实施例中，例如图5所示，第一预设时长t1内，第一透明电极2接收到像素电极信号、相当于像素电极；相应的，此时第二透明电极3接收到公共电极信号、相当于公共电极。如图6所示，受到像素结构、工艺技术等的限制，第一透明电极2接入的像素电极信号中存在直流偏置电压，使得第一透明电极2的电位高于第二透明电极3的电位。由于液晶显示面板内存在极性粒子，此时第一透明电极2上的直流偏置电压会吸引带负电荷的极性粒子，带正电的极性粒子则会受到第二透明电极3的吸引。第一透明电极2或第二透明电极3吸引的极性粒子都将停留在配向膜6的表面。
第一预设时长t1结束后，第二预设时长t2开始时，第一透明电极2接收到公共电极信号、相当于公共电极，而第二透明电极3接收到像素电极信号、相当于像素电极。此时，如图7所示，第二透明电极3的电位高于第一透明电极2的电位，将导致在前一阶段被第二透明电极3吸引的带正电的极性粒子将被中和，或受到第二透明电极3的排斥分散开。第一透明电极2的情况相同。显然，本发明实施例所提供的阵列基板可明显克服显示装置的残像缺陷，甚至可说是从本质上解决了显示装置出现残像缺陷的问题。
另外，本发明实施例中的阵列基板的驱动方式还可为平面转换型(In-PlaneSwitching，简称IPS)。IPS最大的特点就是它的两个电极都在同一个阵列基板的同一层面上，而不像其它驱动模式中的两个电极不位于同一层、立体排列。即如图8所示，该阵列基板中的每一亚像素单元1的第一透明电极2和第二透明电极3均为狭缝电极，且第一透明电极2和第二透明电极3交错设置。
综上，本发明实施例的技术方案提供了一种阵列基板，该阵列基板的每一亚像素单元包括相互配合的第一透明电极和第二透明电极，并且设置有第一开关管和第二开关管。第一开关管连接第一透明电极，为第一透明电极提供像素电极信号或公共电极信号；第二开关管连接第二透明电极，为第二透明电极提供公共电极信号或像素电极信号；第一开关管和第二开关管提供的信号不同，且每经过预设时长，第一开关管和第二开关管所提供的信号互换。每一次第一透明电极和第二透明电极提供的信号互换后，被前一阶段的第一透明电极吸引而聚集的极性粒子将散开，或极性粒子所带的电荷被中和；第二透明电极的情况相同。如此，可从本质上防止由极性粒子积累导致的残像缺陷的出现，提高了显示装置的成像质量。
进一步的，本发明实施例还提供了一种包括上述的阵列基板的显示装置，该显示装置可为液晶电视、液晶显示器、手机、平板电脑等。
虽然本发明所公开的实施方式如上，但所述的内容只是为了便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发明所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (10)

1.一种阵列基板，其特征在于，包括阵列排布的多个亚像素单元，各亚像素单元包括相互配合的第一透明电极和第二透明电极、第一开关管和第二开关管；
所述第一开关管连接所述第一透明电极，为所述第一透明电极提供像素电极信号或公共电极信号；所述第二开关管连接所述第二透明电极，为所述第二透明电极提供公共电极信号或像素电极信号；所述第一开关管和所述第二开关管提供的信号不同，每经过一定时长，所述第一开关管和所述第二开关管所提供的信号互换。
2.根据权利要求1所述的阵列基板，其特征在于，
每经过第一预设时长，所述第一开关管由提供像素电极信号变为提供公共电极信号，所述第二开关管由提供公共电极信号变为提供像素电极信号；
每经过第二预设时长，所述第一开关管由提供公共电极信号变为提供像素电极信号，所述第二开关管由提供像素电极信号变为提供公共电极信号。
3.根据权利要求2所述的阵列基板，其特征在于，各亚像素单元对应设置有第一数据线、第一栅线和第二数据线、第二栅线，其中，
所述第一数据线连接所述第一开关管的源极，所述第一栅线连接所述第一开关管的栅极；
所述第二数据线连接所述第二开关管的源极，所述第二栅线连接所述第二开关管的栅极。
4.根据权利要求2所述的阵列基板，其特征在于，各亚像素单元对应设置有数据线、第一栅线和第二栅线，其中，
所述数据线连接所述第一开关管和所述第二开关管的源极，所述第一栅线连接所述第一开关管的栅极，所述第二栅线连接所述第二开关管的栅极。
5.根据权利要求2所述的阵列基板，其特征在于，各亚像素单元对应设置有第一数据线、第二数据线和栅线，其中，
所述第一数据线连接所述第一开关管的源极，所述第二数据线连接所述第二开关管的源极，所述栅线连接所述第一开关管和所述第二开关管的栅极。
6.根据权利要求1所述的阵列基板，其特征在于，
所述第一透明电极为狭缝电极，所述第二透明电极为板状电极，所述第一透明电极位于所述第二透明电极之上。
7.根据权利要求1所述的阵列基板，其特征在于，
所述第一透明电极和所述第二透明电极均为狭缝电极，且所述第一透明电极和所述第二透明电极交错设置。
8.根据权利要求2所述的阵列基板，其特征在于，所述第一预设时长、所述第二预设时长小于或等于残像出现所需的时长。
9.一种显示装置，其特征在于，包括如权利要求1-8任一项所述的阵列基板。
10.根据权利要求9所述的显示装置，其特征在于，还包括与所述阵列基板对盒设置的彩膜基板。
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