CN102722055A - 阵列基板及液晶显示装置 - Google Patents

阵列基板及液晶显示装置 Download PDF

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CN102722055A
CN102722055A CN2012101808223A CN201210180822A CN102722055A CN 102722055 A CN102722055 A CN 102722055A CN 2012101808223 A CN2012101808223 A CN 2012101808223A CN 201210180822 A CN201210180822 A CN 201210180822A CN 102722055 A CN102722055 A CN 102722055A
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electrode
opening
public electrode
pixel electrode
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CN102722055B (zh
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贾沛
杨流洋
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Changsha HKC Optoelectronics Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Abstract

本发明公开了一种阵列基板，包括薄膜晶体管、数据线、栅极线、像素电极，所述像素电极包括至少一条状电极和至少一主干电极，所述阵列基板还包括：一公共电极，所述公共电极上定义有：第一区域，所述第一区域为所述像素电极在所述公共电极所在平面上的投影；及第二区域，所述第二区域靠近所述第一区域的至少一侧边；所述公共电极在所述第二区域上设有至少一开口。本发明还公开了一种液晶显示装置。

Description

阵列基板及液晶显示装置
【技术领域】
本发明涉及液晶显示技术领域，特别涉及一种阵列基板及液晶显示装置。
【背景技术】
传统的液晶显示装置的阵列基板上设有多个像素电极，这些像素电极用于产生电场，以对液晶分子施加作用力，从而改变液晶分子的偏向。其中，像素电极上设置有至少两个主干电极以及多个条状电极，该两个主干电极相互垂直，这些条状电极与主干电极成一定的角度设置。当像素电极上的条状电极通电时，分布在像素电极边缘区域的电荷的密度与分布在像素电极中部区域的电荷的密度有较大的差别，即，分布在条状电极上远离两个主干电极的一端的电荷的密度大于分布在条状电极上其它部分的电荷的密度，导致像素电极的边缘区域对液晶分子产生的作用力的大小、方向与像素电极中部区域对液晶分子产生的作用力的大小、方向均不同，因此，在像素电极的边缘区域，液晶分子会出现排列紊乱的现象，降低了液晶显示装置的显示效果。
【发明内容】
本发明的一个目的在于提供一种阵列基板，其能防止液晶分子在像素电极的边缘区域出现偏向紊乱的现象，降低液晶显示装置的显示效果。
为解决上述问题，本发明提供了一种阵列基板，包括薄膜晶体管、数据线、栅极线、像素电极，所述像素电极包括至少一条状电极和至少一主干电极，所述阵列基板还包括：一公共电极，所述公共电极上定义有：第一区域，所述第一区域为所述像素电极在所述公共电极所在平面上的投影；及第二区域，所述第二区域靠近所述第一区域的至少一侧边；所述公共电极在所述第二区域上设有至少一开口。
在上述阵列基板中，所述开口的位置为在所述第二区域上靠近像素电极的边缘处。
在上述阵列基板中，所述第二区域处在所述第一区域的四周。
在上述阵列基板中，所述开口的深度小于或等于所述公共电极的厚度。
在上述阵列基板中，所述开口的中心与一所述条状电极在公共电极所在的平面上的投影共线。
本发明的另一个目的在于提供一种液晶显示装置，其能防止液晶分子在像素电极的边缘区域出现偏向紊乱的现象，降低液晶显示装置的显示效果。
为解决上述问题，本发明提供了一种液晶显示装置，包括：背光源、阵列基板、彩色滤光片基板；所述阵列基板包括：薄膜晶体管、数据线、栅极线；所述阵列基板还包括：一像素电极，所述像素电极包括至少一条状电极和至少一主干电极；一公共电极，所述公共电极上定义有：第一区域，所述第一区域为所述像素电极在所述公共电极所在平面上的投影；及第二区域，所述第二区域靠近所述第一区域的至少一侧边；所述公共电极在所述第二区域上设有至少一开口。
在上述液晶显示装置中，所述开口的位置为在所述第二区域上靠近像素电极的边缘处。
在上述液晶显示装置中，所述第二区域处在所述第一区域的四周。
在上述液晶显示装置中，所述开口的深度小于或等于所述公共电极的厚度。
在上述液晶显示装置中，所述开口的中心与一所述条状电极在公共电极所在的平面上的投影共线。
本发明相对现有技术，由于在公共电极上靠近像素电极的区域边缘处设有开口，并且该开口的位置设置于像素电极的四周边缘附近，该开口的开口方向设置于公共电极上面向像素电极的一面或背对像素电极的一面，该开口的内壁会聚集电荷，因此该开口与条状电极远离主干电极的一端之间会形成一电场，另外，由于该开口具有一深度，该深度小于或等于公共电极的厚度，可以根据对液晶分子施加的作用力的大小和方向来设置该开口的开口方向以及深度，从而调整开口内壁上聚集的电荷的数量，进而调整开口与条状电极远离主干电极的一端之间的电场，调整对像素电极边缘处液晶分子的排列，使得处在像素电极边缘处的液晶分子的取向与像素电极除边缘处以外的部位（中部区域）的液晶分子的取向大致相同，防止液晶分子在像素电极的边缘区域出现偏向紊乱的现象，提高了液晶显示装置的显示效果。
为让本发明的上述内容能更明显易懂，下文特举优选实施例，并配合所附图式，作详细说明如下：
【附图说明】
图1为本发明的阵列基板的局部示意图；
图2为图1中的A-A’截面的第一个实施例的局部示意图；
图3为图1中的A-A’截面的第二个实施例的局部示意图。
【具体实施方式】
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。
参考图1，图1为本发明的阵列基板的局部示意图。本发明的阵列基板包括栅极线103、数据线101、薄膜晶体管102、像素电极109、公共电极203（如图2和3所示）。像素电极109上设有两个相互垂直的主干电极107和多个条状电极104，这些条状电极104的一端与主干电极107相连，另一端朝向远离主干电极107的方向。公共电极203上设有两个区域，分别记为第一区域105和第二区域106，第一区域105和第二区域106共面，均在公共电极203所在的平面上，并且不重叠。该第一区域105与该像素电极109所在的位置对应，具体地，该第一区域105为像素电极109的外围轮廓在公共电极203所在平面上的投影，该第一区域105的形状、面积与像素电极109的外围轮廓的形状、面积一致，该外围轮廓是指多个条状电极104的远离主干电极107的一端的端点连成的形状。该第二区域106与第一区域105相邻，具体地，该第二区域106靠近该第一区域106的至少一侧边，该第二区域106可以对称地设置于该第一区域105的两侧，或者，该第二区域106三面围绕该第一区域105，或者，该第二区域106四面包围该第一区域105。该第二区域106上设置有多个开口108，该开口108的形状为矩形、圆形、三角形或其它任意形状。该开口108的位置面向一个条状电极104远离主干电极107的一端，即，该开口108的中心与一个条状电极104在公共电极203所在的平面上的投影共线（虚线110）。
参考图2，图2为图1中的A-A’截面的第一个实施例的局部示意图。在本实施例中，玻璃基板204、公共电极203、绝缘层202、像素电极109（条状电极104）和钝化层201依先后次序层叠组合为一体。公共电极203的第二区域106上设有开口108，该开口108的位置为在第二区域106上靠近像素电极109（条状电极104）的边缘处。具体地，该开口108设置在面向一个条状电极104的远离主干电极107的一端的位置上，即，该开口108的中心与一个条状电极104在公共电极203所在的平面上的投影共线（直线110）。该开口108设置在公共电极203面向像素电极109（条状电极104）的一面上并具有一第一预定深度h1，该第一预定深度h1小于或等于公共电极203的厚度H。
参考图3，图3为图1中的A-A’截面的第二个实施例的局部示意图。在本实施例中，玻璃基板204、公共电极203、绝缘层202、像素电极109（条状电极104）和钝化层201依先后次序层叠组合为一体。公共电极203的第二区域106上设有开口108，该开口108的位置为在第二区域106上靠近像素电极109（条状电极104）的边缘处。具体地，该开口108设置在面向一个条状电极104的远离主干电极107的一端的位置上，即，该开口108的中心与一个条状电极104在公共电极203所在的平面上的投影共线（虚线110）。该开口108设置在公共电极203背向像素电极109（条状电极104）的一面上并具有一第二预定深度第二预定深度h2，该第二预定深度第二预定深度h2小于或等于公共电极203的厚度H。
本发明的液晶显示装置包括背光源、阵列基板、彩色滤光片基板，该背光源、阵列基板和彩色滤光片基板依次叠加组合为一体。如图1、2和3所示，该阵列基板包括栅极线103、数据线101、薄膜晶体管102、像素电极109、公共电极203（图中未示出）。像素电极109上设有两个相互垂直的主干电极107和多个条状电极104，这些条状电极104的一端与主干电极107相连，另一端朝向远离主干电极107的方向。公共电极上设有两个区域，分别记为第一区域105和第二区域106，第一区域105和第二区域106共面，均在公共电极所在的平面上，并且不重叠。该第一区域105与该像素电极109所在的位置对应，具体地，该第一区域105为像素电极109的外围轮廓在公共电极所在平面上的投影，该第一区域105的形状、面积与像素电极109的外围轮廓的形状、面积一致，该外围轮廓是指多个条状电极104的远离主干电极107的一端的端点连成的形状。该第二区域106与第一区域105相邻，具体地，该第二区域106靠近该第一区域106的至少一侧边，该第二区域106可以对称地设置于该第一区域105的两侧，或者，该第二区域106三面围绕该第一区域105，或者，该第二区域106四面包围该第一区域105。该第二区域106上设置有多个开口108，该开口108的形状为矩形、圆形、三角形或其它任意形状。该开口的位置面向一个条状电极104远离主干电极107的一端，即，该开口108的中心与一个条状电极104在公共电极203所在的平面上的投影共线（虚线110）。从图1所示的阵列基板的A-A’截面观察（如图2和图3所示），阵列基板包括，玻璃基板204、公共电极203、绝缘层202、像素电极109（条状电极104）和钝化层201，玻璃基板204、公共电极203、绝缘层202、像素电极109（条状电极104）和钝化层201依先后次序层叠组合为一体。公共电极203的第二区域106上设有开口108，该开口108的位置为在第二区域106上靠近像素电极109（条状电极104）的边缘处。具体地，该开口108设置在面向一个条状电极104的远离主干电极107的一端的位置上，即，该开口108的中心与一个条状电极104在公共电极203所在的平面上的投影共线（虚线110）。该开口108设置在公共电极203面向像素电极109（条状电极104）的一面上并具有一第一预定深度h1，该第一预定深度h1小于或等于公共电极203的厚度H，和/或者，该开口108设置在公共电极203背向像素电极109（条状电极104）的一面上并具有一第二预定深度第二预定深度h2，该第二预定深度第二预定深度h2小于或等于公共电极203的厚度H。
在本发明中，由于在公共电极上靠近像素电极109的区域边缘处设有开口，并且该开口的位置设置于像素电极109的四周边缘附近，该开口的开口方向设置于公共电极上面向像素电极109的一面或背对像素电极109的一面，该开口的内壁会聚集电荷，因此该开口与条状电极远离主干电极的一端之间会形成一电场，另外，由于该开口具有一深度，该深度小于或等于公共电极的厚度，可以根据对液晶分子施加的作用力的大小和方向来设置该开口的开口方向以及深度，从而调整开口内壁上聚集的电荷的数量，进而调整开口与条状电极远离主干电极的一端之间的电场，调整对像素电极109边缘处液晶分子的排列，使得处在像素电极109边缘处的液晶分子的取向与像素电极109除边缘处以外的部位（中部区域）的液晶分子的取向大致相同，防止液晶分子在像素电极109的边缘区域出现偏向紊乱的现象，提高了液晶显示装置的显示效果。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (10)

1.一种阵列基板，包括薄膜晶体管、数据线、栅极线、像素电极，所述像素电极包括至少一条状电极和至少一主干电极，其特征在于，所述阵列基板还包括：
一公共电极，所述公共电极上定义有：
第一区域，所述第一区域为所述像素电极在所述公共电极所在平面上的投影；及
第二区域，所述第二区域靠近所述第一区域的至少一侧边；
所述公共电极在所述第二区域上设有至少一开口。
2.根据权利要求1所述的阵列基板，其特征在于，所述开口的位置为在所述第二区域上靠近像素电极的边缘处。
3.根据权利要求1所述的阵列基板，其特征在于，所述第二区域处在所述第一区域的四周。
4.根据权利要求1所述的阵列基板，其特征在于，所述开口的深度小于或等于所述公共电极的厚度。
5.根据权利要求1所述的阵列基板，其特征在于，所述开口的中心与一所述条状电极在公共电极所在的平面上的投影共线。
6.一种液晶显示装置，包括：背光源、阵列基板、彩色滤光片基板；所述阵列基板包括：薄膜晶体管、数据线、栅极线；其特征在于，所述阵列基板还包括：
一像素电极，所述像素电极包括至少一条状电极和至少一主干电极；
一公共电极，所述公共电极上定义有：
第一区域，所述第一区域为所述像素电极在所述公共电极所在平面上的投影；及
第二区域，所述第二区域靠近所述第一区域的至少一侧边；
所述公共电极在所述第二区域上设有至少一开口。
7.根据权利要求6所述的液晶显示装置，其特征在于，所述开口的位置为在所述第二区域上靠近像素电极的边缘处。
8.根据权利要求6所述的液晶显示装置，其特征在于，所述第二区域处在所述第一区域的四周。
9.根据权利要求6所述的液晶显示装置，其特征在于，所述开口的深度小于或等于所述公共电极的厚度。
10.根据权利要求6所述的液晶显示装置，其特征在于，所述开口的中心与一所述条状电极在公共电极所在的平面上的投影共线。
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