WO2015010425A1 - 电容式触摸屏 - Google Patents

电容式触摸屏 Download PDF

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Publication number
WO2015010425A1
WO2015010425A1 PCT/CN2013/089600 CN2013089600W WO2015010425A1 WO 2015010425 A1 WO2015010425 A1 WO 2015010425A1 CN 2013089600 W CN2013089600 W CN 2013089600W WO 2015010425 A1 WO2015010425 A1 WO 2015010425A1
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Prior art keywords
pattern
touch
electrostatic protection
layer
signal receiving
Prior art date
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PCT/CN2013/089600
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English (en)
French (fr)
Inventor
鲁友强
邱云
王静
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/367,757 priority Critical patent/US9495051B2/en
Publication of WO2015010425A1 publication Critical patent/WO2015010425A1/zh

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0448Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds

Definitions

  • Embodiments of the invention relate to a capacitive touch screen. Background technique
  • a conventional capacitive touch screen usually has an electrostatic protection layer and a touch sensing layer on the back side of the color filter substrate.
  • the electrostatic protection layer is used to reduce the influence of static electricity in the external environment on the display quality
  • the touch sensing layer is used to implement touch sensing.
  • this design creates a large capacitance between the electrostatic protection layer and the touch sensing layer, thereby affecting the touch sensing sensitivity and increasing the thickness of the touch screen. Therefore, it is desirable to provide a capacitive touch screen capable of reducing the thickness of the touch screen while achieving both touch sensing and electrostatic protection, and eliminating capacitance formed between the electrostatic protection layer and the touch sensing layer.
  • Embodiments of the present invention provide a capacitive touch screen.
  • the capacitive touch screen is provided with an electrostatic protection touch layer on the other surface of the color matrix substrate to form a black matrix layer, and the electrostatic protection touch layer is protected by a touch array pattern and static electricity.
  • a discharge pattern is formed, the electrostatic protection discharge pattern being disposed in a gap of the touch array pattern and complementary to the touch array pattern.
  • the electrostatic protection discharge pattern and the touch array pattern are mutually preferred.
  • the touch array pattern is composed of spaced-apart multi-column touch units arranged side by side, and the multi-column touch units are mutually They are insulated from each other.
  • the touch unit includes a charging pattern and a plurality of signal receiving patterns.
  • the charging pattern is a comb pattern
  • the signal receiving pattern is an "EJ"-shaped pattern
  • a protrusion of the charging pattern is inserted into a slot of the signal receiving pattern
  • the charging pattern One of the signal receiving patterns is inserted at intervals, and the charging pattern and the signal receiving pattern are insulated from each other.
  • the charging pattern and each of the signal receiving patterns are respectively provided with connection traces.
  • the electrostatic protection touch layer is provided with a binding area, and a connection trace of the charging pattern and the signal receiving pattern extends to the binding area.
  • the electrostatic protection touch layer is fabricated by a one-step mask process.
  • FIG. 1 is an exemplary structural diagram of a capacitive touch screen according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of an electrostatic protection touch layer according to an embodiment of the present invention. detailed description
  • the capacitive touch panel of the embodiment of the present invention is composed of an array substrate 101, a color filter substrate 102, and a liquid crystal 103 between the array substrate 101 and the color filter substrate 102, as shown in FIG.
  • An electrostatic protection touch layer 104 is formed on the back surface of the color filter substrate 102, that is, on the other surface of the color film substrate on which the black matrix layer is formed.
  • the electrostatic protection touch layer 104 is used for electrostatic protection and touch sensing, and can be made of a transparent metal oxide material.
  • the electrostatic protection touch layer 104 is composed of a touch array pattern and an electrostatic protection discharge pattern.
  • the electrostatic protection discharge pattern and the touch array pattern are insulated from each other, that is, not connected to each other.
  • the electrostatic protection discharge pattern is disposed in the gap of the touch array pattern to complement the touch array pattern.
  • the touch array pattern is used to implement the touch sensing function, and the touch array pattern and shape together with the complementary electrostatic protection discharge pattern realize electrostatic protection.
  • the electrostatic protection layer and the touch sensing layer are formed together, which not only reduces the thickness of the touch screen, saves materials, but also eliminates capacitance generated between the electrostatic protection layer and the touch sensing layer in the prior art, thereby The sensitivity of the touch screen is improved, and the electrostatic protection touch layer can be fabricated by a one-step mask process, thereby reducing the manufacturing process of the touch screen and improving the production efficiency of the device.
  • the touch unit includes a charging pattern 205 and a plurality of signal receiving patterns 206.
  • the charging pattern 205 may be a comb pattern, and the signal receiving pattern 206 may be a "concave" pattern.
  • the protrusion 207 of the charging pattern 205 is inserted into the groove 208 of the signal receiving pattern 206.
  • the charging pattern is inserted with a protrusion 207 A signal receiving pattern 206 is entered.
  • the charging pattern 205 and the signal receiving pattern 206 are insulated from each other, that is, not connected to each other.
  • the charging pattern 205 is provided with a charging pattern connection trace 209.
  • Each of the signal receiving patterns 206 is provided with a signal receiving pattern connecting trace 210.
  • the charging pattern connection trace 209 of the charging pattern and the signal receiving pattern connection trace 210 of the signal receiving pattern extend to the bonding region 202.
  • the touch unit of the touch array pattern given in this embodiment is only an example. Those skilled in the art can make touch arrays by using other prior art touch sensing patterns, and only need to change the shape of the electrostatic protection discharge pattern to set the electrostatic protection discharge pattern. In the gap of the touch array pattern, complementary to the touch array pattern, electrostatic protection can be achieved while implementing touch sensing.
  • the electrostatic protection discharge pattern 203 is provided with an electrostatic discharge discharge pattern connecting trace 211.
  • the electrostatic protection discharge pattern connection wiring 211 can be connected to the electrostatic protection discharge pattern 203 and the electrostatic protection discharge pattern 203, and insulated from the touch array pattern, and the electrostatic protection discharge pattern connection trace 211 extends to the binding area 202.
  • the charging pattern connection trace 209, the signal receiving pattern connection trace 210 and the electrostatic protection discharge pattern connection trace 211 are connected to the circuit board by binding in the binding area. Since the electrostatic protection touch layer is made of a transparent metal oxide material, it is difficult to identify the identification of the device during the binding process. Therefore, when the black matrix is fabricated on the color filter substrate, the black matrix is used for binding. The electrostatic protection protects the binding identifier of the touch layer, thereby achieving the purpose of alignment without increasing the number of process steps.
  • the capacitive touch screen of the embodiment of the present invention reduces the thickness of the touch screen by reducing the thickness of the touch screen by using the electrostatic protection layer and the touch sensing layer on one layer, thereby saving the material, achieving both touch sensing and electrostatic protection, and eliminating static electricity protection.
  • the capacitance formed between the layer and the touch sensing layer improves touch sensitivity.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Position Input By Displaying (AREA)
  • Liquid Crystal (AREA)

Abstract

本发明的实施例公开了一种电容式触摸屏,其设置有静电保护触摸层,所述静电保护触摸层由触摸阵列图案和静电保护放电图案构成,所述静电保护放电图案设置在所述触摸阵列图案的间隙中,与所述触摸阵列图案互补。本发明的实施例的电容式触摸屏,通过将静电保护层和触摸感应层制作到一层上,降低了触摸屏的厚度,节省了材料,既实现了触摸感应又实现了静电保护,消除了静电保护层与触摸感应层之间形成的电容,提高了触摸感应灵敏度。

Description

电容式触摸屏 技术领域
本发明的实施例涉及一种电容式触摸屏。 背景技术
近年来, 随着科技的发展, 液晶显示器技术也随之不断完善。 TFT-LCD
( Thin Film Transistor-Liquid Crystal Display, 薄膜场效应晶体管-液晶显示 器)以其图像显示品质好、 能耗低、 环保等优势占据着显示器领域的重要位 置。 传统的电容式触摸屏, 通常在彩膜基板的背面制作一层静电保护层和一 层触摸感应层。静电保护层用于减少外部环境中的静电对显示质量造成的影 响, 触摸感应层用于实现触摸感应。 但是这种设计使得静电保护层和触摸感 应层之间形成了很大的电容, 从而影响了触摸感应灵敏度, 并且增加了触摸 屏的厚度。 因此, 需要提供一种电容式触摸屏, 其能够在既实现触摸感应又 实现静电保护的情况下降低触摸屏的厚度, 消除静电保护层与触摸感应层之 间形成的电容。 发明内容
本发明的实施例提供了一种电容式触摸屏, 所述电容式触摸屏在彩膜基 板制作黑矩阵层的另一面上设置有静电保护触摸层, 所述静电保护触摸层由 触摸阵列图案和静电保护放电图案构成, 所述静电保护放电图案设置在所述 触摸阵列图案的间隙中, 与所述触摸阵列图案互补。
优选的, 例如, 所述静电保护放电图案与所述触摸阵列图案之间相互绝 优选的, 例如, 所述触摸阵列图案由间隔的并排设置的多列触摸单元构 成, 所述多列触摸单元彼此之间相互绝缘。
优选的, 例如, 所述触摸单元包括充电图案和多个信号接收图案。 优选的, 例如, 所述充电图案为梳形图案, 所述信号接收图案为 "EJ"字 形图案, 所述充电图案的突起插入所述信号接收图案的 槽, 所述充电图案 间隔一个突起插入一个所述信号接收图案, 所述充电图案和所述信号接收图 案之间相互绝缘。
优选的,例如,所述充电图案和每个信号接收图案分别设置有连接走线。 优选的, 例如, 所述静电保护触摸层设置有绑定区, 所述充电图案和信 号接收图案的连接走线延伸至所述绑定区。
优选的, 例如, 所述静电保护触摸层通过一步掩膜工艺制作而成。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例的附图作 筒单地介绍,显而易见地,下面描述中的附图仅仅涉及本发明的一些实施例, 而非对本发明的限制。
图 1是本发明实施例电容式触摸屏的示例性结构图;
图 2是本发明实施例静电保护触摸层的示例性结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例的附图,对本发明实施例的技术方案进行清楚、完整地描述。显然, 所描述的实施例是本发明的一部分实施例, 而不是全部的实施例。 基于所描 述的本发明的实施例,本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
除非另作定义, 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权 利要求书中使用的"第一"、 "第二 "以及类似的词语并不表示任何顺序、 数量 或者重要性, 而只是用来区分不同的组成部分。 同样, "一个 "或者 "一"等类 似词语也不表示数量限制, 而是表示存在至少一个。 "包括 "或者 "包含 "等类 似的词语意指出现在 "包括 "或者 "包含 "前面的元件或者物件涵盖出现在 "包 括"或者"包含"后面列举的元件或者物件及其等同, 并不排除其他元件或者 物件。 "连接 "或者 "相连 "等类似的词语并非限定于物理的或者机械的连接, 而是可以包括电性的连接,不管是直接的还是间接的。 "上"、 "下"、 "左"、 "右" 等仅用于表示相对位置关系, 当被描述对象的绝对位置改变后, 则该相对位 置关系也可能相应地改变。
本发明实施例的电容式触摸屏,如图 1所示由阵列基板 101、彩膜基板 102 和阵列基板 101与彩膜基板 102之间的液晶 103构成。 在彩膜基板 102的背面, 即彩膜基板的制作黑矩阵层的另一面上形成有静电保护触摸层 104。 所述静 电保护触摸层 104用于实现静电保护和触摸感应的作用, 可以由透明金属氧 化物材料制作而成。
静电保护触摸层 104由触摸阵列图案和静电保护放电图案构成。 静电保 护放电图案与触摸阵列图案之间相互绝缘, 即相互不连接。 静电保护放电图 案设置在触摸阵列图案的间隙中, 与触摸阵列图案互补。 触摸阵列图案用于 实现触摸感应功能,触摸阵列图案和形状与其互补的静电保护放电图案共同 实现静电保护功能。
本实施例中, 将静电保护层和触摸感应层制作在了一起, 不仅降低了触 摸屏的厚度, 节省了材料, 还消除了现有技术中静电保护层和触摸感应层之 间产生的电容, 从而提高了触摸屏的灵敏度, 静电保护触摸层可以通过一步 掩膜工艺制作而成, 从而减少了触摸屏的制作工艺流程, 提高了设备的生产 效率。
具体的, 例如, 静电保护触摸层的结构如图 2所示。 静电保护触摸层分 为静电保护触摸区 201和绑定区 202, 由触摸阵列图案和静电保护放电图案 203构成。 触摸阵列图案与静电保护放电图案 203之间相互绝缘, 即相互不 连接。 触摸阵列图案由间隔并排设置的多列触摸单元 204构成, 多列触摸单 元 204彼此之间相互绝缘, 静电保护放电图案 203设置在多列触摸单元 204 的间隙中, 与所述触摸阵列图案互补。
其中, 图 2中只示意的画出了四组触摸阵列图案和静电保护放电图案。 触摸阵列图案的列数及长度可以根据触摸屏的尺寸进行设置。
触摸单元包括充电图案 205和多个信号接收图案 206。 充电图案 205可 以为梳形图案, 信号接收图案 206可以为 "凹"字形图案。 充电图案 205的突 起 207插入信号接收图案 206的凹槽 208。 充电图案每间隔一个突起 207插 入一个信号接收图案 206。充电图案 205和信号接收图案 206之间相互绝缘, 即不相互连接。 充电图案 205设置有充电图案连接走线 209。 每个信号接收 图案 206设置有信号接收图案连接走线 210。 充电图案的充电图案连接走线 209和信号接收图案的信号接收图案连接走线 210延伸至绑定区 202。
本实施例给出的触摸阵列图案的触摸单元只是举例说明, 本领域技术人 员可以采用其他现有技术的触摸感图案制作触摸阵列, 只需改变静电保护放 电图案的形状, 使静电保护放电图案设置在触摸阵列图案的间隙中, 与触摸 阵列图案互补, 就能在实现触摸感应的同时, 达到静电保护的作用。
静电保护放电图案 203设置有静电保护放电图案连接走线 211。 静电保 护放电图案连接走线 211 可以将静电保护放电图案 203 和触摸阵列图案包 围, 与静电保护放电图案 203连接, 与触摸阵列图案绝缘, 静电保护放电图 案连接走线 211延伸至绑定区 202。
充电图案连接走线 209、 信号接收图案连接走线 210和静电保护放电图 案连接走线 211在绑定区通过绑定与线路板连接。 由于静电保护触摸层采用 透明金属氧化物材料制作而成, 在进行绑定过程中, 设备对标识的识别比较 困难, 因此, 在彩膜基板上制作黑矩阵时, 在黑矩阵上制作用于绑定静电保 护触摸层的绑定标识, 从而在不增加工艺步骤的前提下达到对位的目的。
本发明的实施例的电容式触摸屏,通过将静电保护层和触摸感应层制作 到一层上, 降低了触摸屏的厚度, 节省了材料, 既实现了触摸感应又实现了 静电保护, 消除了静电保护层与触摸感应层之间形成的电容, 提高了触摸感 应灵敏度。
以上实施方式仅用于说明本发明, 而并非对本发明的限制, 有关技术领 域的普通技术人员, 在不脱离本发明的精神和范围的情况下, 还可以做出各 种变化和变型, 因此所有等同的技术方案也属于本发明的范畴, 本发明的专 利保护范围应由权利要求限定。

Claims

权利要求书
1、 一种电容式触摸屏, 其在彩膜基板制作黑矩阵层的另一面上设置有 静电保护触摸层,所述静电保护触摸层由触摸阵列图案和静电保护放电图案 构成, 所述静电保护放电图案设置在所述触摸阵列图案的间隙中, 与所述触 摸阵列图案互补。
2、 如权利要求 1所述的电容式触摸屏, 其中, 所述静电保护放电图案与 所述触摸阵列图案之间相互绝缘。
3、 如权利要求 1或 2所述的电容式触摸屏, 其中, 所述触摸阵列图案由 间隔的并排设置的多列触摸单元构成, 所述多列触摸单元彼此之间相互绝
4、 如权利要求 3所述的电容式触摸屏, 其中, 所述触摸单元包括充电 图案和多个信号接收图案。
5、 如权利要求 4所述的电容式触摸屏, 其中, 所述充电图案为梳形图 案, 所述信号接收图案为 "EJ"字形图案, 所述充电图案的突起插入所述信号 接收图案的凹槽, 所述充电图案间隔一个突起插入一个所述信号接收图案, 所述充电图案和所述信号接收图案之间相互绝缘。
6、 如权利要求 4或 5所述的电容式触摸屏, 其中, 所述充电图案、 每 个信号接收图案和静电保护放电图案分别设置有连接走线。
7、 权利要求 4-6 中任一项所述的电容式触摸屏, 其中, 所述静电保护 触摸层设置有绑定区,所述充电图案和信号接收图案的连接走线延伸至所述 绑定区。
8、 权利要求 1-7 中任一项所述的电容式触摸屏, 其中, 所述静电保护 触摸层通过一步掩膜工艺制作而成。
9、 权利要求 1-7 中任一项所述的电容式触摸屏, 其中, 所述静电保护 触摸层由透明金属氧化物构成。
PCT/CN2013/089600 2013-07-26 2013-12-16 电容式触摸屏 WO2015010425A1 (zh)

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