CN104461209A - 一种内嵌式触摸屏及显示装置 - Google Patents
一种内嵌式触摸屏及显示装置 Download PDFInfo
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- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Abstract
本发明公开了一种内嵌式触摸屏及显示装置,由于在各自电容电极在与沿列方向相邻的两个像素单元之间的间隙对应的区域设置有纵向狭缝,和/或各自电容电极在与沿行方向相邻的两个像素单元之间的间隙对应的区域设置有横向狭缝,因此可以保证整个内嵌式触摸屏中自电容电极中的狭缝以及自电容电极之间的间隙的均匀分布,从而避免内嵌式触摸屏出现亮线或者暗线等不良问题。
Description
技术领域
本发明涉及触控技术领域,尤其涉及一种内嵌式触摸屏及显示装置。
背景技术
随着显示技术的飞速发展,触摸屏(Touch Screen Panel)已经逐渐遍及人们的生活中。目前,触摸屏按照组成结构可以分为:外挂式触摸屏(Add on ModeTouch Panel)、覆盖表面式触摸屏(On Cell Touch Panel)、以及内嵌式触摸屏(InCell Touch Panel)。其中,外挂式触摸屏是将触摸屏与液晶显示屏(Liquid CrystalDisplay,LCD)分开生产,然后贴合到一起成为具有触摸功能的液晶显示屏,外挂式触摸屏存在制作成本较高、光透过率较低、模组较厚等缺点。而内嵌式触摸屏将触摸屏的触控电极内嵌在液晶显示屏内部,可以减薄模组整体的厚度,又可以大大降低触摸屏的制作成本,受到各大面板厂家青睐。
目前,现有的内嵌(In cell)式触摸屏是利用互电容或自电容的原理实现检测手指触摸位置。其中,利用自电容的原理可以在触摸屏中设置多个同层设置且相互绝缘的自电容电极,当人体未触碰屏幕时,各自电容电极所承受的电容为一固定值,当人体触碰屏幕时,对应的自电容电极所承受的电容为固定值叠加人体电容,触控侦测芯片在触控时间段通过检测各自电容电极的电容值变化可以判断出触控位置。由于人体电容可以作用于全部自电容,相对于人体电容仅能作用于互电容中的投射电容,由人体碰触屏幕所引起的触控变化量会大于利用互电容原理制作出的触摸屏,因此,相对于互电容的触摸屏能有效提高触控的信噪比,从而提高触控感应的准确性。
现有的内嵌式触摸屏,具体结构一般如图1所示,一个自电容电极1对应液晶显示屏中的多个像素单元2,相邻自电容电极1之间通过间隙S相互绝缘。但是在上述内嵌式触摸屏中,由于相邻自电容电极1之间存在间隙S,因此,在显示时,显示屏的相邻自电容电极1之间的间隙附件(图1中A区域)与自电容电极1内部(图1中B区域)存在亮度差异,从而导致显示屏出现亮线或者暗线等不良问题。
发明内容
有鉴于此,本发明实施例提供了一种内嵌式触摸屏,用以解决现有技术中存在的显示画面出现亮线或者暗线等不良问题。
因此,本发明实施例提供了一种内嵌式触摸屏,包括:相对设置的上基板和下基板,位于所述下基板上呈矩阵排列的若干像素单元,位于所述上基板面向所述下基板一侧或所述下基板面向所述上基板一侧的若干相互独立的且与多个所述像素单元对应的自电容电极、以及与各所述自电容电极对应电连接的导线;
各所述自电容电极在与沿列方向相邻的两个像素单元之间的间隙对应的区域设置有纵向狭缝;和/或
各自电容电极在与沿行方向相邻的两个像素单元之间的间隙对应的区域设置有横向狭缝。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,各自电容电极在与各像素单元对应的区域还设置有多个纵向狭缝和/或多个横向狭缝。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,所述纵向狭缝的宽度等于相邻两列自电容电极之间的间隙宽度。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,所述横向狭缝的宽度等于相邻两行自电容电极之间的间隙宽度。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,在各自电容电极中,各所述纵向狭缝的长度相等;和/或各所述横向狭缝的长度相等。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,各自电容电极中的横向狭缝和纵向狭缝的排布规律均相同。
较佳地,为了简化制作工艺,在本发明实施例提供的上述内嵌式触摸屏中,所述多个相互独立的自电容电极同层设置。
较佳地,为了简化制作工艺,以及降低制作成本,在本发明实施例提供的上述内嵌式触摸屏中,各所述自电容电极组成位于所述下基板面向所述上基板一侧的公共电极层,所述内嵌式触摸屏还包括:触控芯片;
所述触控侦测芯片用于在显示时间段对各所述自电容电极加载公共电极信号,在触控时间段通过检测各所述自电容电极的电容值变化以判断触控区域。
较佳地,为了简化制作工艺,以及降低制作成本,在本发明实施例提供的上述内嵌式触摸屏中,还包括:位于所述自电容电极下方的数据线;
各所述导线与所述数据线设置为同层同材质。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,还包括:位于所述下基板面向所述上基板一侧,或位于所述上基板面向所述下基板一侧的黑矩阵层;
相邻的两个所述自电容电极之间的分割间隙在所述下基板的正投影均位于所述黑矩阵层的图形所在区域内。
相应地,本发明实施例还提供了一种显示装置,包括本发明实施例提供的上述任一种内嵌式触摸屏。
本发明实施例提供的一种内嵌式触摸屏及显示装置,由于在各自电容电极在与沿列方向相邻的两个像素单元之间的间隙对应的区域设置有纵向狭缝,和/或各自电容电极在与沿行方向相邻的两个像素单元之间的间隙对应的区域设置有横向狭缝,因此可以保证整个内嵌式触摸屏中自电容电极中的狭缝以及自电容电极之间的间隙的均匀分布,从而避免内嵌式触摸屏出现亮线或者暗线等不良问题。
附图说明
图1为现有的内嵌式触摸屏的结构示意图;
图2a为本发明实施例提供的内嵌式触摸屏的结构示意图之一;
图2b为本发明实施例提供的内嵌式触摸屏的结构示意图之二;
图2c为本发明实施例提供的内嵌式触摸屏的结构示意图之三;
图3a为本发明实施例提供的内嵌式触摸屏的结构示意图之四;
图3b为图3a所示的内嵌式触摸屏中一个自电容电极的结构示意图;
图4a为本发明实施例提供的内嵌式触摸屏的结构示意图之五;
图4b为图4a所示的内嵌式触摸屏中一个自电容电极的结构示意图;
图5a为本发明实施例提供的内嵌式触摸屏的结构示意图之六;
图5b为图5a所示的内嵌式触摸屏中一个自电容电极的结构示意图;
图6a为本发明实施例提供的内嵌式触摸屏的结构示意图之七;
图6b为图6a所示的内嵌式触摸屏中一个自电容电极的结构示意图;
图7a为本发明实施例提供的内嵌式触摸屏的驱动时序示意图之一;
图7b为本发明实施例提供的内嵌式触摸屏的驱动时序示意图之二。
具体实施方式
下面结合附图,对本发明实施例提供的内嵌式触摸屏及显示装置的具体实施方式进行详细地说明。
附图中各膜层的厚度和形状不反映真实比例,目的只是示意说明本发明内容。
本发明实施例提供了一种内嵌式触摸屏,如图2a至图2c所示,包括:相对设置的上基板(图中未示出)和下基板01,位于下基板01上呈矩阵排列的若干像素单元,位于上基板面向下基板01一侧或下基板01面向上基板一侧的若干相互独立的且与多个像素单元02对应的自电容电极03、以及与各自电容电极03对应电连接的导线04;在图2a至图2c示出了自电容电极03和导线04设置于下基板01面向上基板一侧的结构;
各自电容电极03在与沿列方向相邻的两个像素单元02之间的间隙对应的区域还设置有纵向狭缝051;和/或
各自电容电极03在与沿行方向相邻的两个像素单元02之间的间隙对应的区域还设置有横向狭缝052。
本发明实施例提供的上述内嵌式触摸屏,由于在各自电容电极在与沿列方向相邻的两个像素单元之间的间隙对应的区域设置有纵向狭缝,和/或各自电容电极在与沿行方向相邻的两个像素单元之间的间隙对应的区域设置有横向狭缝,因此可以保证整个内嵌式触摸屏中自电容电极中的狭缝以及自电容电极之间的间隙的均匀分布,从而避免内嵌式触摸屏出现亮线或者暗线等不良问题。
较佳地,为了进一步保证狭缝在整个显示屏的均匀性,在本发明实施例提供的上述内嵌式触摸屏中,如图3a至图6b所示,各自电容电极03在与各像素单元02对应的区域也设置有多个纵向狭缝051和/或多个横向狭缝052。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,纵向狭缝的宽度等于相邻两列自电容电极之间的间隙宽度。具体地,在具体实施时,相邻两列自电容电极之间的间隙宽度一般为5μm左右,在此不作限定。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,横向狭缝的宽度等于相邻两行自电容电极之间的间隙宽度。具体地,在具体实施时,相邻两行自电容电极之间的间隙宽度一般为5μm左右,在此不作限定。
具体地,在具体实施时,为了保证狭缝分布的均匀性,在本发明实施例提供的上述内嵌式触摸屏中,在各自电容电极中,各纵向狭缝的长度相等;或各横向狭缝的长度相等。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,在各自电容电极中,各纵向狭缝的长度相等;且各横向狭缝的长度相等。
较佳地,为了保证狭缝分布的均匀性,在本发明实施例提供的上述内嵌式触摸屏中,各自电容电极中的横向狭缝和纵向狭缝的排布规律均相同。
较较佳地,为了简化制作工艺,在本发明实施例提供的上述内嵌式触摸屏中,多个相互独立的自电容电极同层设置。这样,只需要通过一次构图工艺就可形成所有自电容电极的图形,能够简化工艺步骤,节省制备成本。当然也可以分层制备自电容电极,在此不做限定。
进一步地,在具体实施时,本发明实施例提供的上述内嵌式触摸屏,既适用于扭转向列(Twisted Nematic,TN)型液晶显示屏,也适用于高级超维场开关(Adwanced Dimension Switch,ADS)型液晶显示屏、高开口率、高级超维场开关(High-Adwanced Dimension Switch,HADS)型液晶显示屏和平面内开关(In-Plane Switch,IPS)型液晶显示屏。
具体地,在具体实施时,由于在HADS型液晶显示屏中,公共电极的结构一般为狭缝电极结构,即公共电极在与各像素单元对应的区域设置有多个狭缝。因此,本发明实施例提供的上述内嵌式触摸屏尤其适用于HADS型液晶显示屏。
进一步,当本发明实施例提供的上述内嵌式触摸屏应用于HADS型液晶显示屏时,采用HADS型液晶显示屏中狭缝电极结构的公共电极层复用自电容电极,即各自电容电极组成位于下基板面向上基板一侧的公共电极层,内嵌式触摸屏还包括:触控芯片;
触控侦测芯片用于在显示时间段对各自电容电极加载公共电极信号,在触控时间段通过检测各自电容电极的电容值变化以判断触控位置。这样,将公共电极层的结构进行变更分割成自电容电极以实现触控功能时,在现有的下基板制备工艺的基础上,不需要增加额外的工艺,可以节省生产成本,提高生产效率。
具体地,由于本发明实施例提供的上述触摸屏采用公共电极层复用作为自电容电极,为了减少显示和触控信号之间的相互干扰,在具体实施时,需要采用触控和显示阶段分时驱动的方式,并且,在具体实施时还可以将显示驱动芯片和触控侦测芯片整合为一个芯片,进一步降低生产成本。
具体地,例如:如图7a和图7b所示的驱动时序图中,将触摸屏显示每一帧(V-sync)的时间分成显示时间段(Display)和触控时间段(Touch),例如如图7a和图7b所示的驱动时序图中触摸屏的显示一帧的时间为16.7ms,选取其中5ms作为触控时间段,其他的11.7ms作为显示时间段,当然也可以根据IC芯片的处理能力适当的调整两者的时长,在此不做具体限定。在显示时间段(Display),对触摸屏中的每条栅极信号线Gate1,Gate2……Gate n依次施加栅扫描信号,对数据信号线Data施加灰阶信号,与各自电容电极Cx1……Cx n连接的触控侦测芯片向各自电容电极Cx1……Cx n分别施加公共电极信号,以实现液晶显示功能。在触控时间段(Touch),如图7a所示,与各自电容电极Cx1……Cx n连接的触控侦测芯片向各自电容电极Cx1……Cx n同时施加驱动信号,同时接收各自电容电极Cx1……Cx n的反馈信号;也可以如图7b所示,与各自电容电极Cx1……Cx n连接的触控侦测芯片向各自电容电极Cx1……Cxn依次施加驱动信号,分别接收各自电容电极Cx1……Cx n的反馈信号,在此不做限定,通过对反馈信号的分析判断是否发生触控,以实现触控功能。
进一步地,为了简化制作工艺,以及降低制作成本,在本发明实施例提供的上述内嵌式触摸屏中,还包括:位于自电容电极下方的数据线;各导线与数据线设置为同层同材质。这样在制备时,可以将各导线与数据线同层制备,从而不用增加新的制备工艺,仅需变更对应的膜层的构图即可实现,简化了工艺步骤,节省了生产成本,提高了生产效率。
一般地,触摸屏的密度通常在毫米级,因此,在具体实施时,可以根据所需的触控密度选择各自电容电极的密度和所占面积以保证所需的触控密度,通常各自电容电极设计为5mm*5mm左右的方形电极。而显示屏的密度通常在微米级,因此,一般一个自电容电极会对应显示屏中的多个像素单元。
并且,本发明实施例提供的上述内嵌式触摸屏是将现有的整层设置在下基板上的公共电极层分割成多个自电容电极,为了不影响正常的显示功能,在对公共电极层进行分割时,分割线一般都会避开显示的开口区域,设置在黑矩阵层的图形区域。
较佳地,在本发明实施例提供的上述内嵌式触摸屏中,还可以包括:位于下基板面向上基板一侧,或位于上基板面向下基板一侧的黑矩阵层;
相邻的两个自电容电极之间的分割间隙在下基板的正投影均位于黑矩阵层的图形所在区域内。
基于同一发明构思,本发明实施例还提供了一种显示装置,包括本发明实施例提供的上述内嵌式触摸屏,该显示装置可以为:手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述内嵌式触摸屏的实施例,重复之处不再赘述。
本发明实施例提供的一种内嵌式触摸屏及显示装置,由于在各自电容电极在与沿列方向相邻的两个像素单元之间的间隙对应的区域设置有纵向狭缝,和/或各自电容电极在与沿行方向相邻的两个像素单元之间的间隙对应的区域设置有横向狭缝,因此可以保证整个内嵌式触摸屏中自电容电极中的狭缝以及自电容电极之间的间隙的均匀分布,从而避免内嵌式触摸屏出现亮线或者暗线等不良问题。
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 (11)
1.一种内嵌式触摸屏,包括:相对设置的上基板和下基板,位于所述下基板上呈矩阵排列的若干像素单元,位于所述上基板面向所述下基板一侧或所述下基板面向所述上基板一侧的若干相互独立的且与多个所述像素单元对应的自电容电极、以及与各所述自电容电极对应电连接的导线;其特征在于:
各所述自电容电极在与沿列方向相邻的两个像素单元之间的间隙对应的区域设置有纵向狭缝;和/或
各自电容电极在与沿行方向相邻的两个像素单元之间的间隙对应的区域设置有横向狭缝。
2.如权利要求1所述的内嵌式触摸屏,其特征在于,各自电容电极在与各像素单元对应的区域还设置有多个纵向狭缝和/或多个横向狭缝。
3.如权利要求1或2所述的内嵌式触摸屏,其特征在于,所述纵向狭缝的宽度等于相邻两列自电容电极之间的间隙宽度。
4.如权利要求1或2所述的内嵌式触摸屏,其特征在于,所述横向狭缝的宽度等于相邻两行自电容电极之间的间隙宽度。
5.如权利要求1或2所述的内嵌式触摸屏,其特征在于,在各所述自电容电极中,各所述纵向狭缝的长度相等;和/或各所述横向狭缝的长度相等。
6.如权利要求1或2所述的内嵌式触摸屏,其特征在于,各自电容电极中的横向狭缝和纵向狭缝的排布规律均相同。
7.如权利要求1或2所述的内嵌式触摸屏,其特征在于,所述多个相互独立的自电容电极同层设置。
8.如权利要求7所述的内嵌式触摸屏,其特征在于,各所述自电容电极组成位于所述下基板面向所述上基板一侧的公共电极层,所述内嵌式触摸屏还包括:触控芯片;
所述触控侦测芯片用于在显示时间段对各所述自电容电极加载公共电极信号,在触控时间段通过检测各所述自电容电极的电容值变化以判断触控区域。
9.如权利要求8所述的内嵌式触摸屏,其特征在于,还包括:位于所述自电容电极下方的数据线;
各所述导线与所述数据线设置为同层同材质。
10.如权利要求8所述的内嵌式触摸屏,其特征在于,还包括:位于所述下基板面向所述上基板一侧,或位于所述上基板面向所述下基板一侧的黑矩阵层;
相邻的两个所述自电容电极之间的分割间隙在所述下基板的正投影均位于所述黑矩阵层的图形所在区域内。
11.一种显示装置,其特征在于,包括如权利要求1-10任一项所述的内嵌式触摸屏。
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US20160357308A1 (en) | 2016-12-08 |
US9927908B2 (en) | 2018-03-27 |
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WO2016110045A1 (zh) | 2016-07-14 |
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