CN104516611A - 电容式内嵌触摸屏以及显示装置 - Google Patents
电容式内嵌触摸屏以及显示装置 Download PDFInfo
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Abstract
本发明公开了一种电容式内嵌触摸屏,包括相对设置的具有公共电极层的阵列基板和具有滤光单元阵列的彩膜基板,以及位于阵列基板和彩膜基板之间的液晶层,阵列基板中设置有与滤光单元阵列对应的像素单元阵列;其中,公共电极层中具有多条沿像素单元的行方向延伸的驱动电极;彩膜基板还包括用于间隔各个滤光单元的黑色矩阵,彩膜基板上还设置有多条沿像素单元的列方向延伸的感应电极,其中,感应电极在所述彩膜基板上的投影与对应列的黑色矩阵重合。本发明还公开了包含如上所述电容式内嵌触摸屏的显示装置。
Description
技术领域
本发明涉及触控技术领域,尤其涉及一种电容式内嵌触摸屏以及包含该触摸屏的显示装置。
背景技术
触摸显示屏作为一种输入媒介,是目前最简单、方便的一种人机交互方式,因此触摸显示屏越来越多地应用到各种电子产品中。基于不同的工作原理以及传输信息的介质,触摸屏产品可以分为四种:红外线触摸屏、电容式触摸屏、电阻触摸屏和表面声波触摸屏;其中电容式触摸屏由于具有寿命长、透光率高、可以支持多点触控等优点成为目前主流的触摸屏技术。电容式内嵌触摸屏将触摸屏的触控电极设置在显示屏内,可以减小模组的厚度,并且由于减少了结构层的数量,使得画面显示更加清晰。
现有的电容式内嵌(In Cell)触摸屏,主要是在薄膜晶体管(Thin FilmTransistor,TFT)阵列基板上制作两层相互正交的条状电极,其中一层为驱动电极,另一侧为扫描电极。如图1所示,现有的电容式内嵌触摸屏包括相对设置的阵列基板2和具有滤光单元4阵列的彩膜基板1,以及位于阵列基板2和彩膜基板1之间的液晶层3,彩膜基板1还包括用于间隔各个滤光单元4的黑色矩阵5。阵列基板2上依次制作两层相互正交的条状触控电极,包括驱动电极6和感应电极7。驱动电极6和感应电极7的材料为氧化铟锡(Indium tin oxide,ITO,一种透明的导电材料),两组电极交叉的地方将会形成耦合电容CM,即这两组电极分别构成了耦合电容CM的两极。当手指触摸到电容屏时,影响了触摸点附近两个电极之间的耦合,从而改变了这两个电极之间的耦合电容CM的大小。检测互电容大小时,驱动电极发出激励信号,所有感应电极接收信号,这样可以得到所有驱动电极与感应电极交汇点的电容值大小,即整个触摸屏的二维平面的电容大小。根据触摸屏二维电容变化量数据,可以计算出每一个触摸点的坐标,因此,屏上即使有多个触摸点,也能计算出每个触摸点的真实坐标。
然而,在以上结构的电容式内嵌触摸屏中,需要在阵列基板上制作两层相互正交的条状电极,工艺极为复杂;另外,阵列基板本身包含有薄膜晶体管阵列,其线路细小且结构复杂,当在阵列基板上增加更多的工序时,阵列基板极易损坏,降低了产品的良率。
发明内容
鉴于现有技术存在的不足,本发明提供了一种电容式内嵌触摸屏,通过对触控电极结构的改进,降低了触摸屏制备工艺的难度,提高了产品的良率,节省了生产成本。
为了实现上述目的,本发明采用了如下的技术方案:
一种电容式内嵌触摸屏,包括相对设置的具有公共电极层的阵列基板和具有滤光单元阵列的彩膜基板,以及位于所述阵列基板和彩膜基板之间的液晶层,所述阵列基板中设置有与所述滤光单元阵列对应的像素单元阵列,其中,
所述公共电极层中具有多条沿像素单元的行方向延伸的驱动电极;在一帧画面的显示时间内,所述驱动电极用于分时地传递公共电极信号和触控扫描信号;
所述彩膜基板还包括用于间隔各个滤光单元的黑色矩阵,所述彩膜基板上还设置有多条沿像素单元的列方向延伸的感应电极,其中,所述感应电极在所述彩膜基板上的投影与对应列的黑色矩阵重合。
优选地,所述感应电极与对应列的黑色矩阵合为一体,即,所述感应电极与所述黑色矩阵位于同一结构层中,两列滤光单元之间的黑色矩阵由所述感应电极替换。
优选地,所述彩膜基板与所述液晶层之间还设置有一保护层,所述感应电极位于所述黑色矩阵上方,并且位于所述彩膜基板与所述保护层之间。
优选地,所述彩膜基板与所述液晶层之间还设置有一保护层,所述感应电极位于所述黑色矩阵上方,并且位于所述液晶层与所述保护层之间。
优选地,所述感应电极为金属电极。
优选地,所述金属电极包括层叠设置的Mo/AL/Mo金属层。
优选地,所述感应电极为透明导电氧化物电极,所述透明导电氧化物为ITO。
优选地,所述公共电极层的材料为ITO。
优选地,所述滤光单元包括红色滤光单元、绿色滤光单元以及蓝色滤光单元。
本发明的另一方面是提供一种显示装置,包括显示屏及背光模组,所述显示屏与所述背光模组相对设置,所述背光模组提供显示光源给所述显示屏,以使所述显示屏显示影像,其中,所述显示屏为如上所述的电容式内嵌触摸屏。
相比于现有技术,本发明实施例提供的电容式内嵌触摸屏,其中的驱动电极位于阵列基板上,感应电极位于彩膜基板上,阵列基板上只需要增加制备驱动电极的工艺,减小了工艺难度,提供了产品的良率,节省了生产成本。另外,将阵列基板上的公共电极层分割为长条状,作为触摸屏的驱动电极,在一帧画面的显示时间内,驱动电极用于分时地传递公共电极信号和触控扫描信号,从结构上进一步降低了工艺难度,节省了成本。
附图说明
图1是现有的一种电容式内嵌触摸屏的结构示意图。
图2是本发明实施例1提供的电容式内嵌触摸屏的结构示意图。
图3是本发明实施例2提供的电容式内嵌触摸屏的结构示意图。
图4是本发明实施例3提供的电容式内嵌触摸屏的结构示意图。
图5是本发明实施例提供的显示装置的结构示意图。
具体实施方式
如前所述,本发明的目的是提供一种电容式内嵌触摸屏,通过对触控电极结构的改进,降低了触摸屏制备工艺的难度。该电容式内嵌触摸屏包括相对设置的具有公共电极层的阵列基板和具有滤光单元阵列的彩膜基板,以及位于所述阵列基板和彩膜基板之间的液晶层,所述阵列基板中设置有与所述滤光单元阵列对应的像素单元阵列,其中,所述公共电极层中具有多条沿像素单元的行方向延伸的驱动电极;在一帧画面的显示时间内,所述驱动电极用于分时地传递公共电极信号和触控扫描信号;所述彩膜基板还包括用于间隔各个滤光单元的黑色矩阵,所述彩膜基板上还设置有多条沿像素单元的列方向延伸的感应电极,其中,所述感应电极在所述彩膜基板上的投影与对应列的黑色矩阵重合。
通过将电容式内嵌触摸屏的触控电极设置于不同的基板上,其中的驱动电极位于阵列基板上,感应电极位于彩膜基板上,阵列基板上只需要增加制备驱动电极的工艺,减小了工艺难度,提高了产品的良率,节省了生产成本。
下面将对结合附图用实施例对本发明做进一步说明。
实施例1
如图2所示,本实施例提供的电容式内嵌触摸屏包括相对设置的具有公共电极层21的阵列基板20和具有滤光单元11阵列的彩膜基板10,以及位于阵列基板20和彩膜基板10之间的液晶层30。其中,滤光单元11包括红色滤光单元11R、绿色滤光单元11G以及蓝色滤光单元11B,阵列基板20中设置有与滤光单元11R、11G、11B阵列对应的像素单元22阵列,彩膜基板10还包括用于间隔各个滤光单元11R、11G、11B的黑色矩阵12。本实施例中,彩膜基板10与液晶层30之间还设置有一保护层60。
该内嵌触摸屏的触控电极包括驱动电极40和感应电极50,其中:
驱动电极40设置于阵列基板20上的公共电极层21中。即,将公共电极层21沿像素单元22的行方向分割为长条状,作为触摸屏的驱动电极40。进一步地,公共电极层21的材料为ITO。由于驱动电极40由公共电极层21分割形成,因此在一帧画面的显示时间内,驱动电极40用于分时地传递公共电极信号和触控扫描信号。
感应电极50设置于彩膜基板10上,感应电极50沿像素单元22的列方向延伸。在本实施例中,每一感应电极50与对应列的黑色矩阵12合为一体,即,感应电极50与黑色矩阵12位于同一结构层中,两列滤光单元11之间的黑色矩阵12由感应电极50替换。进一步地,感应电极50为金属电极;该金属电极可以是包括层叠设置的Mo/AL/Mo金属层。
以上提供的电容式内嵌触摸屏,其触控电极设置于不同的基板上,其中的驱动电极位于阵列基板上,感应电极位于彩膜基板上;并且,驱动电极由公共电极层分割形成,感应电极与对应列的黑色矩阵合为一体,由此减小了产品的工艺难度,提高了产品的良率,节省了生产成本。
实施例2
如图3所示,本实施例提供的电容式内嵌触摸屏包括相对设置的具有公共电极层21的阵列基板20和具有滤光单元11阵列的彩膜基板10,以及位于阵列基板20和彩膜基板10之间的液晶层30。其中,滤光单元11包括红色滤光单元11R、绿色滤光单元11G以及蓝色滤光单元11B,阵列基板20中设置有与滤光单元11R、11G、11B阵列对应的像素单元22阵列,彩膜基板10还包括用于间隔各个滤光单元11R、11G、11B的黑色矩阵12。本实施例中,彩膜基板10与液晶层30之间还设置有一保护层60。
该内嵌触摸屏的触控电极包括驱动电极40和感应电极50,其中:
驱动电极40设置于阵列基板20上的公共电极层21中。即,将公共电极层21沿像素单元22的行方向分割为长条状,作为触摸屏的驱动电极40。进一步地,公共电极层21的材料为ITO。由于驱动电极40由公共电极层21分割形成,因此在一帧画面的显示时间内,驱动电极40用于分时地传递公共电极信号和触控扫描信号。
感应电极50设置于彩膜基板10上,感应电极50沿像素单元22的列方向延伸。在本实施例中,感应电极50位于黑色矩阵12上方,并且位于彩膜基板10与所述保护层60之间,更具体地感应电极50位于黑色矩阵12和保护层60之间。进一步地,感应电极50的为金属电极;该金属电极可以是包括层叠设置的Mo/AL/Mo金属层。在本实施例中,感应电极50还可以选择为透明导电氧化物电极,具体地,透明导电氧化物为ITO。
实施例3
如图4所示,本实施例提供的电容式内嵌触摸屏包括相对设置的具有公共电极层21的阵列基板20和具有滤光单元11阵列的彩膜基板10,以及位于阵列基板20和彩膜基板10之间的液晶层30。其中,滤光单元11包括红色滤光单元11R、绿色滤光单元11G以及蓝色滤光单元11B,阵列基板20中设置有与滤光单元11R、11G、11B阵列对应的像素单元22阵列,彩膜基板10还包括用于间隔各个滤光单元11R、11G、11B的黑色矩阵12。本实施例中,彩膜基板10与液晶层30之间还设置有一保护层60。
该内嵌触摸屏的触控电极包括驱动电极40和感应电极50,其中:
驱动电极40设置于阵列基板20上的公共电极层21中。即,将公共电极层21沿像素单元22的行方向分割为长条状,作为触摸屏的驱动电极40。进一步地,公共电极层21的材料为ITO。由于驱动电极40由公共电极层21分割形成,因此在一帧画面的显示时间内,驱动电极40用于分时地传递公共电极信号和触控扫描信号。
感应电极50设置于彩膜基板10上,感应电极50沿像素单元22的列方向延伸。在本实施例中,感应电极50位于黑色矩阵12上方,并且位于液晶层30与所述保护层60之间,并设置在保护层60上。进一步地,感应电极50的为金属电极;该金属电极可以是包括层叠设置的Mo/AL/Mo金属层。在本实施例中,感应电极50还可以选择为透明导电氧化物电极,具体地,透明导电氧化物为ITO。
实施例4
本实施例提供了一种显示装置,如图5所示,该显示装置包括显示屏100及背光模组200,显示屏100与背光模组200相对设置,背光模组200提供显示光源给显示屏100,以使显示屏100显示影像。其中,显示屏100采用实施例1-3中提供的电容式内嵌触摸屏。
综上所述,本发明实施例提供的电容式内嵌触摸屏,其中的驱动电极位于阵列基板上,感应电极位于彩膜基板上,阵列基板上只需要增加制备驱动电极的工艺,减小了工艺难度,提供了产品的良率,节省了生产成本。另外,将阵列基板上的公共电极层分割为长条状,作为触摸屏的驱动电极,在一帧画面的显示时间内,驱动电极用于分时地传递公共电极信号和触控扫描信号,从结构上进一步降低了工艺难度,节省了成本。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本申请的具体实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本申请原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本申请的保护范围。
Claims (10)
1.一种电容式内嵌触摸屏,包括相对设置的具有公共电极层(21)的阵列基板(20)和具有滤光单元(11)阵列的彩膜基板(10),以及位于所述阵列基板(20)和彩膜基板(10)之间的液晶层(30),所述阵列基板(20)中设置有与所述滤光单元(11)阵列对应的像素单元(22)阵列,其特征在于,
所述公共电极层(21)中具有多条沿像素单元(22)的行方向延伸的驱动电极(40);在一帧画面的显示时间内,所述驱动电极(40)用于分时地传递公共电极信号和触控扫描信号;
所述彩膜基板(10)还包括用于间隔各个滤光单元(11)的黑色矩阵(12),所述彩膜基板(10)上还设置有多条沿像素单元(22)的列方向延伸的感应电极(50),其中,所述感应电极(50)在所述彩膜基板(10)上的投影与对应列的黑色矩阵(12)重合。
2.根据权利要求1所述的电容式内嵌触摸屏,其特征在于,所述感应电极(50)与对应列的黑色矩阵(12)合为一体,即,所述感应电极(50)与所述黑色矩阵(12)位于同一结构层中,两列滤光单元(11)之间的黑色矩阵(12)由所述感应电极(50)替换。
3.根据权利要求1所述的电容式内嵌触摸屏,其特征在于,所述彩膜基板(10)与所述液晶层(30)之间还设置有一保护层(60),所述感应电极(50)位于所述黑色矩阵(12)上方,并且位于所述彩膜基板(10)与所述保护层(60)之间。
4.根据权利要求1所述的电容式内嵌触摸屏,其特征在于,所述彩膜基板(10)与所述液晶层(30)之间还设置有一保护层(60),所述感应电极(50)位于所述黑色矩阵(12)上方,并且位于所述液晶层(30)与所述保护层(60)之间。
5.根据权利要求2-4任一所述的电容式内嵌触摸屏,其特征在于,所述感应电极(50)为金属电极。
6.根据权利要求5所述的电容式内嵌触摸屏,其特征在于,所述金属电极包括层叠设置的Mo/AL/Mo金属层。
7.根据权利要求3或4所述的电容式内嵌触摸屏,其特征在于,所述感应电极(50)为透明导电氧化物电极,所述透明导电氧化物为ITO。
8.根据权利要求1所述的电容式内嵌触摸屏,其特征在于,所述公共电极层(21)的材料为ITO。
9.根据权利要求1所述的电容式内嵌触摸屏,其特征在于,所述滤光单元(11)包括红色滤光单元(11R)、绿色滤光单元(11G)以及蓝色滤光单元(11B)。
10.一种显示装置,包括显示屏(100)及背光模组(200),所述显示屏(100)与所述背光模组(200)相对设置,所述背光模组(200)提供显示光源给所述显示屏(100),以使所述显示屏(100)显示影像,其特征在于,所述显示屏(100)为权利要求1-9任一所述的电容式内嵌触摸屏。
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- 2015-01-09 US US14/425,004 patent/US20160342259A1/en not_active Abandoned
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CN104865728A (zh) * | 2015-04-29 | 2015-08-26 | 重庆京东方光电科技有限公司 | 彩膜基板、彩膜基板的制造方法、触摸屏及显示装置 |
US9990068B2 (en) | 2015-04-29 | 2018-06-05 | Boe Technology Group Co., Ltd. | Color filter substrate, fabricating method of color filter substrate, touch screen and display device |
WO2016176960A1 (zh) * | 2015-05-04 | 2016-11-10 | 京东方科技集团股份有限公司 | 内嵌式触摸屏及显示装置 |
CN106557193A (zh) * | 2015-09-30 | 2017-04-05 | 南昌欧菲光科技有限公司 | 触摸显示装置 |
CN107544698A (zh) * | 2016-06-29 | 2018-01-05 | 张家港市鸿嘉数字科技有限公司 | 一种触控显示装置 |
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WO2016101354A1 (zh) | 2016-06-30 |
US20160342259A1 (en) | 2016-11-24 |
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