CN105353920A - 一种集成触控显示面板和触控显示设备 - Google Patents

一种集成触控显示面板和触控显示设备 Download PDF

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CN105353920A
CN105353920A CN201510897262.7A CN201510897262A CN105353920A CN 105353920 A CN105353920 A CN 105353920A CN 201510897262 A CN201510897262 A CN 201510897262A CN 105353920 A CN105353920 A CN 105353920A
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touch
control
data line
display
electrode
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CN105353920B (zh
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简守甫
曹兆铿
秦锋
夏志强
王艳丽
孙丽娜
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Tianma Microelectronics Co Ltd
Shanghai AVIC Optoelectronics Co Ltd
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Tianma Microelectronics Co Ltd
Shanghai AVIC Optoelectronics Co Ltd
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Publication of CN105353920A publication Critical patent/CN105353920A/zh
Priority to US15/162,111 priority patent/US20170160858A1/en
Priority to DE102016113525.9A priority patent/DE102016113525A1/de
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Abstract

本发明提供一种集成触控显示面板，其特征在于，包括：基板；设置在所述基板上的多条数据线，所述多条数据线为显示像素提供显示信号，所述多条数据线沿第一方向依次排布，沿第二方向延伸，所述第一方向与所述第二方向相交；多个条状的触控电极，沿所述第一方向依次排布，沿所述第二方向延伸；在垂直所述基板方向上，至少一个所述触控电极与N条数据线重叠，N为自然数，在触控阶段，所述N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等。本发明实施例提供的集成触控显示面板能够有效地降低触控噪音从而提高触控精度。

Description

一种集成触控显示面板和触控显示设备
技术领域
本发明涉及显示技术领域，尤其是涉及一种集成内置触控结构的显示面板。
背景技术
随着现代电子技术的发展，会在显示装置的显示面板中设置相应的结构来实现相应的功能，例如通过设置触控结构来实现触控功能等，以给使用者带来应用上的便利。
目前，为了减小显示面板的厚度并实现触控功能，通常将触控结构集成在显示面板中，在使用电容式触控结构时，可以将电容式触控结构中的触控电极直接与显示结构制作在同一基板上，这种设置方式带来的问题是，显示面板在工作中，显示结构和触控结构中都会输入复杂且不断变化的电信号，这些电信号之间会相互影响，从而影响集成触控结构的显示面板的触控性能或者显示性能。
发明内容
有鉴于此，本发明提供一种集成触控显示面板和触控显示设备。
本发明的第一方面提供一种集成触控显示面板，包括：
基板；
设置在所述基板上的多条数据线，所述多条数据线为显示像素提供显示信号，所述多条数据线沿第一方向依次排布，沿第二方向延伸，所述第一方向与所述第二方向相交；
多个条状的触控电极，沿所述第一方向依次排布，沿所述第二方向延伸；
在垂直所述基板方向上，至少一个所述触控电极与N条数据线重叠，N为自然数，在触控阶段，所述N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等。
本发明的第二方面提供一种触控显示设备，包括上述的集成触控显示面板。
本发明提供的集成触控显示面板，在触控阶段，触控电极所覆盖的数据线中，显示驱动电压为正极性的条数和显示驱动电压为负极性的条数相等，显示驱动电压为正极性的数据线对触控电极的影响和显示驱动电压为负极性的数据线对触控电极的影响能够在一定程度上得到抵消，最大限度地减小数据线上的显示驱动电压对触控电极上触控信号的影响，因此，能够有效地降低触控噪音从而提高触控精度。
附图说明
图1为本发明的一种集成触控显示装置的示意图；
图2为本发明提供的集成触控显示面板的俯视示意图；
图3为本发明的集成触控显示面板的一种局部俯视示意图；
图4为本发明的集成触控显示面板的另一种局部俯视示意图；
图5为本发明的集成触控显示面板的触控电极的俯视示意图；
图6为本发明实施例的互电容式触控结构的示意图；
图7为图6中CD方向的一种截面示意图；
图8为图6中CD方向的另一种截面示意图；
图9为本发明的集成触控显示面板的再一种局部俯视示意图。
具体实施方式
为了更详细地解释本发明的技术内容，特举具体实施例并配合所附图示说明如下，但是以下附图和具体实施方式并不是对本发明的限制，任何所属技术领域中具有通常知识者，在不脱离本发明的精神和范围内，当可作些许的更动与润饰，因此本发明的保护范围当视权利要求书所界定者为准。
图1为本发明的一种集成触控显示装置的示意图，如图1所示，本发明的实施例提供一种集成触控显示装置，该集成触控显示装置10包括集成触控显示面板100，还可以包括用于支持集成触控显示装置10正常工作的其他部件，集成触控显示装置10可以为手机、台式电脑、笔记本、平板电脑、电子相册等，其中集成触控显示面板100是将触控结构与显示结构制作在同一基板上实现显示与触控两个功能的集成，这种情况下，减少了集成触控显示面板的基板数量，能够显著的减小集成触控显示面板的厚度，从而使集成触控显示装置具有便捷的触控功能的同时，还能获得更薄的尺寸，使用更加轻便，当然，对于集成触控显示面板100，将触控结构与显示结构制作在同一基板上必然会带来更多的问题和困难，本发明提供集成触控显示装置，对于其中的集成触控显示面板100，在现有技术的基础上作了改进，提高了集成触控显示面板100的可靠性，对于集成触控显示面板的具体描述如下。
本发明提供的集成触控显示面板包括：基板；设置在基板上的多条数据线，多条数据线为显示像素提供显示驱动电压，多条数据线沿第一方向依次排布，沿第二方向延伸；多个条状的触控电极，沿第一方向依次排布，沿第二方向延伸；在垂直基板方向上，至少一个触控电极与N条数据线重叠，N为自然数，在触控阶段，N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等。具体可以参考图2，图2为本发明提供的集成触控显示面板的俯视示意图，如图2所示，集成触控显示面板100包括：基板200；设置在基板200上的多条数据线DL，多条数据线DL为显示像素PL提供显示信号，多条数据线DL沿第一方向D1依次排布，沿第二方向D2延伸；多个条状的触控电极TPE，沿第一方向D1依次排布，沿第二方向D2延伸；在垂直基板方向上，至少一个触控电极TPE与N条数据线DL重叠，N为自然数，例如，在垂直基板方向上，触控电极TPE1与4条数据线DL重叠，在触控阶段，触控电极TPE1所覆盖的4条数据线中，显示驱动电压为正极性的条数和显示驱动电压为负极性的条数相等，可以均为2条，当然图2仅是示意性的，并不局限于触控电极覆盖4条数据线的情况，仅需要满足触控电极覆盖的数据线中显示驱动电压为正极性的条数和显示驱动电压为负极性的条数相等即可。由于数据线与触控电极之间的耦合作用，数据线上的显示驱动电压会干扰触控电极上的信号：若触控电极为触控驱动电极，触控阶段，触控驱动电极上会施加触控驱动信号，触控驱动信号通常为脉冲信号，数据线上的显示驱动电压会影响触控驱动信号，使触控驱动信号不稳定；若触控电极为触控检测电极，触控阶段，触控检测电极上会输出触控检测信号，触控检测信号通常也是脉冲信号，数据线上的显示驱动电压会影响触控检测信号，使触控检测信号不能准确地反应触控情况，最终，数据线上的显示驱动电压对触控驱动信号和触控检测信号的影响都会导致触控结果的精准性下降。本发明实施例提供的集成触控显示面板，在触控阶段，触控电极所覆盖的数据线中，显示驱动电压为正极性的条数和显示驱动电压为负极性的条数相等，显示驱动电压为正极性的数据线对触控电极的影响和显示驱动电压为负极性的数据线对触控电极的影响能够在一定程度上得到抵消，最大限度地减小数据线上的显示驱动电压对触控电极上触控信号的影响，因此，能够有效地降低触控噪音从而提高触控精度。
液晶显示的驱动必须要有显示像素阵列的极性反转以避免液晶的直流残留，常见的显示像素阵列极性反转的方式有帧反转、列反转、行反转和点反转，扩展性地，还有两点反转、两行反转、两列反转等反转形式，对于点反转或者行反转，在同一时刻，各条数据线上的显示驱动电压的极性是不相同的，并且，正极性和负极性将间隔排列，将这种极性反转的显示驱动方式应用到集成触控显示面板中，使触控电极所覆盖的数据线中，显示驱动电压为正极性的条数和显示驱动电压为负极性的条数相等，便可以达到提高集成触控显示面板的触控精度的效果。
本发明提供的集成触控显示面板的触控电极为多个条状的触控电极，且多个条状触控电极依次排布，因此，多个触控电极之间具有间隙，可选地，在垂直基板的方向上，相邻的触控电极之间的间隙与数据线不重叠，具体可以参考图3，图3为本发明的集成触控显示面板的一种局部俯视示意图，如图3所示，相邻的触控电极TPE之间具有间隙101，在垂直基板的方向上，间隙101与数据线DL不重叠，这种实施方式下，在垂直基板的方向上，触控电极与数据线基本完全重叠，因此，每一条数据线对触控电极的干扰作用基本是等效的，显示驱动电压为正极性的数据线对触控电极的影响和显示驱动电压为负极性的数据线对触控电极的影响能够基本完全抵消，从而可以最大限度地提高集成触控显示面板的触控精度。
在另一种实施方式中，在垂直基板的方向上，相邻的触控电极之间的间隙与数据线重叠，在触控阶段，与一个触控电极两侧的间隙重叠的两条数据线对应的显示驱动电压的极性相反。具体参考图4，图4为本发明的集成触控显示面板的另一种局部俯视示意图，如图4所示，相邻的触控电极之间具有间隙101，在垂直基板的方向上，相邻的触控电极TPE之间的间隙101与数据线DL重叠，图4中示出了数据线DL与间隙101完全重叠的情形，当然，数据线与间隙也可以部分重叠，在触控阶段，与一个触控电极TPE两侧的间隙101重叠的两条数据线DL对应的显示驱动电压的极性相反，具体地，如图4所示，与触控电极TPE2两侧的间隙1011和1012重叠的两条数据线DL分别为DL1和DL2，在触控阶段，数据线DL1和数据线DL2对应的显示驱动电压的极性相反，另外，数据线DL3、DL4、DL5和DL6认为是与触控电极TPE重叠的数据线DL，而与间隙101重叠或者部分重叠的数据线DL不计入与触控电极TPE重叠的数据线DL中，因此，在触控阶段，数据线DL3、DL4、DL5和DL6中显示驱动电压为正极性的条数和显示驱动电压为负极性的条数相等。在间隙处的数据线对触控电极的影响作用趋于等效，一个触控电极会受到其两侧地间隙处的两条数据线的影响，当这两条数据线上的显示驱动电压极性相反时，其中一条显示驱动电压为正极性的数据线对触控电极的影响和另一条显示驱动电压为负极性的数据线对触控电极的影响能够基本完全抵消，从而可以最大限度地提高集成触控显示面板的触控精度。
可选地，触控电极上可以具有缝隙，一个触控电极对应的N条数据线中包括M条数据线，在垂直基板的方向上，缝隙与M条数据线重叠，在触控阶段，M条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等，其中，M为自然数，且M≤N。具体可以参考图5，图5为本发明的集成触控显示面板的触控电极的俯视示意图，如图5所示，在垂直基板的方向上，一个触控电极TPE与8条数据线DL重叠，即一个触控电极TPE对应8条数据线DL11、DL12、DL13、DL14、DL15、DL16、DL17和DL18，在触控阶段，这8条数据线DL11、DL12、DL13、DL14、DL15、DL16、DL17中对应显示驱动电压为正极性的条数和为负极性的条数相等。触控电极TPE上具有多个缝隙102，缝隙102与4条数据线DL重叠，4条数据线分别为DL11、DL13、DL14、DL16，在触控阶段，这4条数据线DL11、DL13、DL14、DL16中对应显示驱动电压为正极性的条数和为负极性的条数相等。在触控电极上与数据线对应的位置设置缝隙可以减小数据线对触控电极的影响，因此，为了使显示驱动电压为正极性的数据线对触控电极的影响可以与显示驱动电压为负极性的数据线对触控电极的影响有效地抵消，需要分别地考虑触控电极上与数据线对应的位置是否设置有缝隙，与缝隙对应的数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等，可以最大限度地提高集成触控显示面板的触控精度。
可选地，集成触控显示面板还可以包括公共电极层，公共电极层可以包括多个彼此绝缘的条状子电极，条状子电极沿第一方向依次排布，沿第二方向延伸，条状子电极复用为触控电极。具体地，继续参考图2，集成触控显示面板100包括多个显示像素PL，每个显示像素PL都包括一个像素电极、一个公共电极和一个薄膜晶体管，像素电极电连接到薄膜晶体管的漏极，薄膜晶体管的源极电连接到数据线DL，薄膜晶体管的栅极连接到扫描线SL，扫描线SL可以通过输入扫描驱动电路500产生的扫描信号来控制薄膜晶体管的导通和关断，因而扫描线SL可以控制数据线DL上的显示驱动电压是否输入到显示像素中，像素电极接收显示信号，公共电极接收公共信号，显示像素中的像素电极和公共电极之间形成的电场，可以控制液晶的偏转，从而实现显示。通常，每个显示像素中的公共电极可以接收相同的公共信号，因此，现有技术中会将整个显示面板的显示像素中的公共电极连接在一起形成一个整体。本发明实施例提供的集成触控显示面板包括公共电极层，而公共电极层又包括多个彼此绝缘的条状子电极，条状子电极可以通过对公共电极层的分割得到，一个条状子电极用作为多个显示像素的公共电极，同时，条状子电极还可以复用为触控电极。在条状子电极复用为触控电极的情况下，集成触控显示面板的工作状态包括显示工作状态和触控工作状态，显示工作状态和触控工作状态可以采用分时工作模式，显示阶段为显示工作状态，触控阶段为触控工作状态，显示阶段和触控阶段相互独立。具体地，对于集成触控显示面板而言，显示工作状态是其常态。在显示阶段，条状子电极被施加公共信号或者被接地；在触控阶段，停止显示工作状态，条状子电极接收或者生成触控信号。条状子电极复用为触控电极可以减少集成触控显示面板的制程工序，节约制造时间和制造成本，并且由于在集成触控显示面板中单独设置触控电极时，还需要辅助地设置绝缘层以保护触控电极不被其他元件干扰，因此，条状子电极复用为触控电极还可以减少集成触控显示面板中的层结构，从而减小集成触控显示面板的厚度。
集成触控显示面板的触控功能可以通过互电容式触控实现，继续参考图2，公共电极层包括多个条状子电极TPE，条状子电极TPE复用为触控电极TPE，因此，条状子电极TPE和触控电极TPE事实上是同一电极，条状子电极TPE沿第一方向D1依次排布，沿第二方向D2延伸。并且从图中可以看出，一个条状子电极TPE对应了多个显示像素PL，因此，一个条状子电极TPE用作为多个显示像素PL的公共电极。条状子电极TPE可以作为互电容式触控的触控驱动电极和触控检测电极中的一个。互电容式触控中，对触控驱动电极输入脉冲式的触控驱动信号，触控驱动电极和触控检测电极之间形成电容，当集成触控显示面板上发生触控时，会影响触摸点附近触控驱动电极和触控检测电极之间的耦合，从而改变触控驱动电极和触控检测电极之间的电容量。检测触摸点位置的方法为，对触控驱动电极依次输入触控驱动信号，触控检测电极同时输出触控检测信号，这样可以得到所有触控驱动电极和触控检测电极交汇点的电容值大小，即整个集成触控显示面板的二维平面的电容大小，根据集成触控显示面板二维电容变化量数据，可以计算出触摸点的坐标。
可选地，条状子电极复用为触控驱动电极，集成触控显示面板还包括与基板相对设置的对置基板，以及设置在对置基板上的触控检测电极，数据线与公共电极层均设置在基板面对对置基板的一侧。具体参考图6，图6为本发明实施例的互电容式触控结构的示意图，条状子电极TPE可以作为触控驱动电极，在触控阶段，为条状子电极TPE提供触控驱动信号。相应地，集成触控显示面板还包括触控检测电极，可选地，继续参考图6，触控检测电极包括多个依次排列的条状触控检测电极TPE3，条状触控检测电极TPE3沿第一方D1延伸，条状触控检测电极TPE3的延伸方向与触控驱动电极TPE即条状子电极TPE的延伸方向相交，多个条状触控检测电极TPE3并列排布，条状触控检测电极TPE3用于提供触控检测信号，即条状触控检测电极TPE3可以作为触控检测电极。进一步地，条状子电极TPE和条状触控检测电极TPE3的相对位置还有以下两种可选方式。图7为图6中CD方向的一种截面示意图，如图7所示，条状子电极TPE设置在基板200上，集成触控显示面板还包括与基板200相对设置的对置基板900，条状触控检测电极TPE3设置在对置基板900上，数据线与公共电极层均设置在基板200面对对置基板900的一侧，条状触控检测电极TPE3设置在对置基板900面对基板200的一侧，基板200和对置基板900之间充有液晶。图8为图6中CD方向的另一种截面示意图，如图8所示，条状子电极TPE设置在基板200上，集成触控显示面板还包括与基板200相对设置的对置基板900，条状触控检测电极TPE3设置在对置基板900上，与图7所示的方式不同的是，条状触控检测电极TPE3设置在对置基板900远离基板200的一侧。在以上可选实施方式中，条状触控检测电极均设置在条状子电极即触控驱动电极远离基板的一侧，由于通常在存在对置基板的情况下，对置基板远离基板的一侧为触控操作侧，因此，将条状触控检测电极设置在条状子电极即触控驱动电极远离基板的一侧，可以使得条状触控检测电极更加靠近触控操作面，使得触控操作对条状触控检测电极的影响更强，从而条状触控检测电极将产生更加准确的触控信号，使触控操作结果更加精确。优选地，条状触控检测电极设置在对置基板远离基板的一侧，触控操作结果相对更加精确。
除了在触控阶段，一个触控电极对应的N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等，进一步地，可以在显示阶段，该触控电极对应的N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等。由于数据线和触控电极之间的耦合作用是相互的，数据线影响触控电极导致触控电极上的电位发生变化，这个变化也会反过来影响数据线，因此，在显示阶段，触控电极对应的N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等，显示驱动电压为正极性的数据线对触控电极的影响和显示驱动电压为负极性的数据线对触控电极的影响能够相互抵消，使触控电极的电位保持稳定，从而触控电极不会对数据线上的显示驱动电压信号造成扰动，使显示效果更加稳定。
特别地，在显示一些纯色画面时，例如显示纯红画面时，即使在显示驱动电压的极性相同的情况下，红色显示像素的显示驱动电压与蓝色显示像素或者绿色显示像素的显示驱动电压的差距较大，因此，相同颜色的显示像素的正负极性的显示驱动电压对触控电极的影响的相互抵消效果更好，因此，可选地，在触控阶段或者在显示阶段，一个触控电极对应的N条数据线中，显示驱动电压为正极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数与显示驱动电压为负极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数相等。具体可以参考图9，图9为本发明的集成触控显示面板的再一种局部俯视示意图，如图9所示，一个触控电极TPE对应6条数据线DL，在触控阶段或者在显示阶段，这6条触控线中，显示驱动电压为正极性的数据线的条数与显示驱动电压为负极性的数据线的条数相等，即均为3条。进一步地，例如对于图9中左侧的触控电极TPE，其对应6条数据线DL，在触控阶段或者在显示阶段，这6条数据线中有2条为红色显示像素提供显示信号的数据线DLR，有2条为绿色显示像素提供显示信号的数据线DLG，有2条为蓝色显示像素提供显示信号的数据线DLB，2条数据线DLR的显示驱动电压的极性相反，2条数据线DLG的显示驱动电压的极性相反，2条数据线DLB的显示驱动电压的极性相反，显示驱动电压为正极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数与显示驱动电压为负极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数相等，使得本发明提供的集成触控显示面板可以更有效地提高触控精度或者更稳定的显示效果。
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。

Claims (11)

1.一种集成触控显示面板，其特征在于，包括：
基板；
设置在所述基板上的多条数据线，所述多条数据线为显示像素提供显示信号，所述多条数据线沿第一方向依次排布，沿第二方向延伸，所述第一方向与所述第二方向相交；
多个条状的触控电极，沿所述第一方向依次排布，沿所述第二方向延伸；
在垂直所述基板方向上，至少一个所述触控电极与N条数据线重叠，N为自然数，在触控阶段，所述N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等。
2.如权利要求1所述的集成触控显示面板，其特征在于，在垂直所述基板的方向上，相邻的所述触控电极之间的间隙与所述数据线不重叠。
3.如权利要求1所述的集成触控显示面板，其特征在于，在垂直所述基板的方向上，相邻的所述触控电极之间的间隙与所述数据线重叠，在所述触控阶段，与一个所述触控电极两侧的所述间隙重叠的两条所述数据线对应的显示驱动电压的极性相反。
4.如权利要求1所述的集成触控显示面板，其特征在于，一个所述触控电极对应的所述N条数据线中包括M条所述数据线，在垂直所述基板的方向上，所述触控电极具有缝隙，所述缝隙与所述M条数据线重叠，在所述触控阶段，所述M条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等，其中，M为自然数，且M≤N。
5.如权利要求1所述的集成触控显示面板，其特征在于，所述集成触控显示面板包括公共电极层，所述公共电极层包括多个彼此绝缘的条状子电极，所述条状子电极沿所述第一方向依次排布，沿所述第二方向延伸，所述条状子电极复用为所述触控电极。
6.如权利要求5所述的集成触控显示面板，其特征在于，所述条状子电极复用为触控驱动电极，所述集成触控显示面板还包括与所述基板相对设置的对置基板，以及设置在所述对置基板上的触控检测电极，所述数据线与所述公共电极层均设置在所述基板面对所述对置基板的一侧。
7.如权利要求6所述的集成触控显示面板，其特征在于，所述触控检测电极包括多个依次排列的条状触控检测电极，所述条状触控检测电极的延伸方向与所述触控驱动电极的延伸方向相交。
8.如权利要求5所述的集成触控显示面板，其特征在于，在显示阶段，所述N条数据线中对应的显示驱动电压为正极性的条数和为负极性的条数相等。
9.如权利要求1所述的集成触控显示面板，其特征在于，在触控阶段，在所述N条数据线中，所述显示驱动电压为正极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数与所述显示驱动电压为负极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数相等。
10.如权利要求8所述的集成触控显示面板，其特征在于，在显示阶段，在所述N条数据线中，所述显示驱动电压为正极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数与所述显示驱动电压为负极性且为红色/绿色/蓝色显示像素提供显示信号的数据线的条数相等。
11.一种触控显示设备，其特征在于，所述触控显示设备包括如权利要求1-10任一所述的集成触控显示面板。
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