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CN104461145A - 一种触摸屏及其制造方法 - Google Patents

一种触摸屏及其制造方法 Download PDF

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CN104461145A
CN104461145A CN201410765254.2A CN201410765254A CN104461145A CN 104461145 A CN104461145 A CN 104461145A CN 201410765254 A CN201410765254 A CN 201410765254A CN 104461145 A CN104461145 A CN 104461145A
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touch
glass layer
induction line
screen
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郭星灵
黄耀立
李曼
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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 CN201410765254.2A priority Critical patent/CN104461145A/zh
Priority to US14/422,670 priority patent/US20160342271A1/en
Priority to PCT/CN2015/070118 priority patent/WO2016090714A1/zh
Publication of CN104461145A publication Critical patent/CN104461145A/zh
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Abstract

本发明公开了一种触摸屏，包括：从下至上依次堆叠设置的液晶显示层、触摸感应层和面板保护层，所述触摸感应层包括滤光玻璃层、触控线路和中间玻璃层，所述触控线路包括分别设于所述中间玻璃层两个相对面的感应线路层和驱动线路层。本发明还公开了一种上述触摸屏的制造方法。通过将触控线路的感应线路层和驱动线路层分别设于中间玻璃层的两个相对面上，实现了触摸屏的轻薄化，同时，感应线路层受到TFT阵列基板上的TFT电场干扰相对减小，有利于提高触摸屏的触控性能。

Description

一种触摸屏及其制造方法
技术领域
本发明涉及显示屏设计制造领域，尤其涉及一种触摸屏及其制造方法。
背景技术
随着触摸显示产品市场竞争的激烈化程度日益加深，手机、平板电脑等电子产品的轻薄化结构设计成为目前各生产厂商所关注的重点之一，而实现显示屏幕的轻薄化的一个重要手段便是利用全贴合技术代替原始的、简单的以双面胶将触摸屏与显示屏的四边固定的框贴技术。
全贴合技术包含以触屏厂商主导的OGS(One Glass Solution,即一体化触控)技术和以显示屏厂商主导的On-Cell(表面覆盖式)技术和In-Cell(嵌入式)技术，其中OGS技术是在保护玻璃上直接形成ITO(氧化铟锡)导电膜及传感器的一种技术，一块玻璃同时起到保护玻璃和触摸传感器的双重作用；In-Cell技术是指将触摸面板功能嵌入到液晶像素中的方法；On-Cell技术是指将触摸面板功能嵌入到彩色滤光片基板和偏光板之间的方法。
相比框贴技术，OGS技术和On-Cell技术节省了一片玻璃和一次贴合，以使触摸屏能够做得更薄且成本更低，但前者需要在保护玻璃上制备一层触控面板，后者需要在CF(Color Filter，彩色滤光片)玻璃和偏光板之间做一层触控面板，因而限制了显示屏厚度的进一步降低。而In-Cell技术虽然可以通过把触控面板制作在LCD里面来达到进一步轻薄化的目标，但由于In-Cell技术是在现有的TFT(Thin Film Transistor，薄膜场效应晶体管)阵列基板上直接增加异面相交的触控感应线和触控驱动线实现的，因此存在着内部噪声干扰和良率的问题，影响了触摸屏的触控性能。
发明内容
鉴于现有技术存在的不足，本发明提供了一种触摸屏机器制造方法，有利于进一步实现触摸屏的轻薄化和改善触摸屏的触控性能。
为了实现上述的目的，本发明采用了如下的技术方案：
一种触摸屏，包括：从下至上依次堆叠设置的液晶显示层、触摸感应层和面板保护层，所述触摸感应层包括滤光玻璃层、触控线路和中间玻璃层，所述触控线路包括分别设于所述中间玻璃层两个相对面的感应线路层和驱动线路层。
其中，所述感应线路层紧贴所述面板保护层下表面。
其中，所述感应线路层和所述驱动线路层均包括多个平行的电极条，所述感应线路层的电极条与所述驱动线路层的电极条相互垂直。
其中，所述触摸感应层为透明的掺锡氧化铟材料制成。
其中，所述感应线路层通过粘合层粘贴于所述中间玻璃层上表面。
其中，所述液晶显示层包括从上至下依次堆叠的液晶玻璃层、TFT阵列基板和玻璃基板，所述液晶玻璃层紧贴所述滤光玻璃层的下表面。
其中，所述感应线路层通过刻蚀形成于所述面板保护层的下表面。
其中，所述驱动线路层刻蚀形成于所述滤光玻璃层上表面。
本发明还提供了一种上述触摸屏的制造方法，包括：将所述感应线路层通过刻蚀制作在所述面板保护层的下表面；制作所述滤光玻璃层时，先将所述驱动线路层通过刻蚀制作在所述滤光玻璃层上，然后制作RGB色阻，使所述驱动线路层一体形成于所述滤光玻璃层上表面。
本发明将触控线路的感应线路层和驱动线路层分别设于中间玻璃层的两个相对面上，实现了触摸屏的轻薄化，同时，感应线路层受到TFT阵列基板上的TFT电场干扰相对减小，有利于提高触摸屏的触控性能。
附图说明
图1为本发明实施例的触摸屏的剖面结构示意图。
图2为本发明实施例的触摸屏的结构示意图。
图3为本发明实施例的触摸屏的制造方法原理示意图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
参阅图1，本发明实施例的触摸屏包括：从下至上依次堆叠设置的液晶显示层100、触摸感应层200和面板保护层300，触摸感应层200包括滤光玻璃层201、触控线路202和中间玻璃层203，其中，触控线路202包括分别设于中间玻璃层203两个相对面上的感应线路层202a和驱动线路层202b。
具体地，感应线路层202a紧贴面板保护层300下表面，感应线路层202a通过粘合层204粘贴于中间玻璃层203上表面。这里，粘合层204为OCA(Optically Clear Adhesive，即光学透明胶)或OCR(Optically ClearAdhesive，即液态透明光学胶)。
结合图2所示，感应线路层202a和驱动线路层202b分别包括多个平行的第一电极条A、第二电极条B，感应线路层202a的第一电极条A与驱动线路层202b的第二电极条B相互垂直设置。本实施例的触摸感应层200的第一电极条A、第二电极条B采用透明的ITO(掺锡氧化铟)材料制成。
进一步地，液晶显示层100包括从上至下依次堆叠的液晶玻璃层102、TFT阵列基板101和玻璃基板103，液晶玻璃层102紧贴滤光玻璃层201的下表面，感应线路层202a通过刻蚀形成于面板保护层300的下表面，驱动线路层202b刻蚀形成于滤光玻璃层201上表面、与滤光玻璃层201一体形成，其中，本实施例的刻蚀方法采用黄光刻蚀工艺。触控面板被制作成分别设置在面板保护层300和滤光玻璃层201上的两层导电电极，不仅可以使触摸屏进一步做得更轻薄，而且感应线路层202a制作在面板保护层300的下面，因此离手指更近，触控面板的反应会更灵敏；感应线路层202a离TFT阵列基板101的距离更远，因此受到TFT阵列基板101上的TFT电场干扰相对减小，提高了触控操作的可靠性。
如图3所示，上述触摸屏的制造方法包括：S1、将感应线路层202a通过刻蚀制作在面板保护层300的下表面；S2、制作滤光玻璃层201时，先将驱动线路层202b通过刻蚀制作在滤光玻璃层201上，然后制作RGB色阻，使驱动线路层202b一体形成于滤光玻璃层201上表面。同时，该制造方法还包括：将驱动线路层202b通过粘合层204粘贴于中间玻璃层203的上表面；将中间玻璃层203的下表面通过机械加工或者通过OCA或OCR粘贴在包含驱动线路层202b的滤光玻璃层201上表面；在滤光玻璃层201下表面依次堆叠液晶玻璃层102、TFT阵列基板101和玻璃基板103等。
本发明通过将现有技术的触控面板制作成分别设置在面板保护层300和滤光玻璃层201上的两层导电电极，不仅可以使触摸屏进一步做得更轻薄，而且简化了制程；同时，由于将感应线路层202a制作在面板保护层300的下面，相比原来的设计，感应线路层202a离手指更近，触控面板的反应会更灵敏；进一步地，相比现有技术，感应线路层202a离TFT阵列基板101的距离更远，受到TFT阵列基板101上的TFT电场干扰相对减小，进一步提高了触控性能。
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 (9)

1.一种触摸屏，其特征在于，包括：从下至上依次堆叠设置的液晶显示层(100)、触摸感应层(200)和面板保护层(300)，所述触摸感应层(200)包括滤光玻璃层(201)、触控线路(202)和中间玻璃层(203)，所述触控线路(202)包括分别设于所述中间玻璃层(203)两个相对面的感应线路层(202a)和驱动线路层(202b)。
2.根据权利要求1所述的触摸屏，其特征在于，所述感应线路层(202a)紧贴所述面板保护层(300)下表面。
3.根据权利要求2所述的触摸屏，其特征在于，所述感应线路层(202a)和所述驱动线路层(202b)均包括多个平行的电极条，所述感应线路层(202a)的电极条与所述驱动线路层(202b)的电极条相互垂直。
4.根据权利要求4所述的触摸屏，其特征在于，所述触摸感应层(200)为透明的掺锡氧化铟材料制成。
5.根据权利要求1-4任一所述的触摸屏，其特征在于，所述感应线路层(202a)通过粘合层(204)粘贴于所述中间玻璃层(203)上表面。
6.根据权利要求5所述的触摸屏，其特征在于，所述液晶显示层(100)包括从上至下依次堆叠的液晶玻璃层(102)、TFT阵列基板(101)和玻璃基板(103)，所述液晶玻璃层(102)紧贴所述滤光玻璃层(201)的下表面。
7.根据权利要求5所述的触摸屏，其特征在于，所述感应线路层(202a)通过刻蚀形成于所述面板保护层(300)的下表面。
8.根据权利要求5所述的触摸屏，其特征在于，所述驱动线路层(202b)刻蚀形成于所述滤光玻璃层(201)上表面。
9.根据权利要求1-8任一所述触摸屏的制造方法，其特征在于，包括：
将所述感应线路层(202a)通过刻蚀制作在所述面板保护层(300)的下表面；
制作所述滤光玻璃层(201)时，先将所述驱动线路层(202b)通过刻蚀制作在所述滤光玻璃层(201)上，然后制作RGB色阻，使所述驱动线路层(202b)一体形成于所述滤光玻璃层(201)上表面。
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