WO2014139215A1 - 电容式触摸屏的电极板、触摸屏及触控显示装置 - Google Patents

电容式触摸屏的电极板、触摸屏及触控显示装置 Download PDF

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Publication number
WO2014139215A1
WO2014139215A1 PCT/CN2013/076086 CN2013076086W WO2014139215A1 WO 2014139215 A1 WO2014139215 A1 WO 2014139215A1 CN 2013076086 W CN2013076086 W CN 2013076086W WO 2014139215 A1 WO2014139215 A1 WO 2014139215A1
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Prior art keywords
ito
touch screen
electrode plate
channel
electrode
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PCT/CN2013/076086
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English (en)
French (fr)
Inventor
刘红娟
王海生
吴俊纬
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北京京东方光电科技有限公司
京东方科技集团股份有限公司
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Priority to US14/344,817 priority Critical patent/US20150153874A1/en
Publication of WO2014139215A1 publication Critical patent/WO2014139215A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections

Definitions

  • Embodiments of the present invention relate to an electrode plate, a touch screen, and a touch display device of a capacitive touch screen. Background technique
  • the existing touch screen pattern that is, the layout structure of the ITO electrode trace on the indium tin oxide (ITO) electrode plate is as shown in the figure. 3.
  • Figure 4 shows.
  • the layout layout structure of the existing ITO electrodes is such that each shape of the pattern is connected to each of the conduction paths (Channel) to connect an ITO line (Line). Therefore, when an ITO electrode on a channel is broken. The entire touch screen will not work properly, and the reliability of using the touch screen is greatly reduced. Summary of the invention
  • the main purpose of the embodiments of the present invention is to provide an electrode plate, a touch screen, and a touch display device of a capacitive touch screen, which can improve the reliability of using the touch screen, and ensure the normality of the touch screen even if the ITO electrode is broken. use.
  • An electrode plate of a capacitive touch screen wherein the electrode plate is an ITO electrode plate, comprising a conductive path Channel and an ITO line, and the at least one channel is connected to at least two ITO lines.
  • Channel and the ITO line comprise the Channel and the ITO line disposed along a first direction, and in the first direction, each at least two of the ITO lines are connected to one of the Channels.
  • Channel and the ITO line comprise a second cross in the first direction a direction of the channel and the ITO line, in the second direction, each at least two of the turns are connected to one of the channels, wherein the ITO line disposed along the first direction and the second direction
  • the set ITO lines are insulated from each other.
  • the trace layout structure of the ITO electrode when the trace layout structure of the ITO electrode is a mesh pattern, it is suitable for a multilayer ITO structure; when the trace layout structure of the ITO electrode is a diamond pattern or a strip pattern, it is suitable for a single layer ITO structure.
  • the width of each ITO trace is half of the existing ITO trace.
  • a touch screen includes the above electrode plate.
  • a touch display device includes the touch screen described above.
  • the mutual protection of the ITO line can ensure the normal operation of the entire touch screen and improve the use of the touch screen. Reliability.
  • FIG. 1 is a schematic view showing a layout of a trace of an ITO electrode according to an embodiment of the present invention
  • FIG. 2 is another schematic view showing a layout of a trace of an ITO electrode according to an embodiment of the present invention
  • FIG. 3 is a view showing a conventional ITO electrode; a schematic diagram of the layout structure of the trace;
  • the ITO electrode trace layout structure on the ITO electrode plate is at least two Channel connections at least two ITO Line.
  • An electrode plate of a capacitive touch screen is an ITO electrode plate
  • the ITO electrode trace layout structure on the ITO electrode plate is at least one channel connecting at least two ITO lines.
  • each at least two of the ITO wires disposed along the first direction are connected to one of the Ch fibers el.
  • each at least two of the ITO lines disposed along a second direction crossing the first direction are connected to one of the channels, wherein the ITO line disposed along the first direction and the second direction are disposed
  • the ITO lines are insulated from each other.
  • At least two ITO lines are connected by using at least one channel.
  • one ITO line is connected by using each channel.
  • at least two ITO lines can protect each other, that is, One of the ITO Lines connected to each channel If there is a problem, for example, when the ITO electrode is broken, the other ITO line of the Channel connection is immediately enabled to conduct the circuit. That is, the other ITO line is still on, the channel can still work normally, and the touch screen is also It works well, so that the two ITO lines that are mutually protected can ensure the normal operation of the entire touch screen and improve the reliability of using the touch screen.
  • FIG. 1 and 2 are schematic views showing the layout of the wiring of the ITO electrode according to the embodiment of the present invention.
  • the trace layout structure of the ITO electrode of FIG. 1 is a mesh pattern. Compared with the structure of the prior art FIG. 3, the width of each ITO trace may be about half of the area of the existing ITO trace.
  • This structure of Figure 1 is suitable for multilayer ITO structures.
  • the trace layout structure of the ITO electrode of Fig. 2 is a diamond pattern. Compared with the structure of the prior art Fig. 4, the width of each ITO trace can be about half of the area of the existing ITO trace.
  • the structure of FIG. 2 is applicable to a single-layer ITO structure.
  • the trace layout structure of the ITO electrode of the embodiment of the present invention may also adopt a strip pattern or a single-layer ITO structure, which will not be described.
  • the mesh structure suitable for the multilayer ITO structure uses at least a double-layer ITO film, and the diamond pattern and the strip pattern suitable for the single-layer ITO structure can be fabricated into a single-layer ITO film, but regardless of the type of structure, It is necessary to bridge the ITO electrodes in the X (lateral) or Y (longitudinal) directions.
  • the ITO lines connected in the X direction with different Channels are insulated from the ITO lines connected in the Y direction with different Channels.
  • the mesh structure process suitable for multilayer ITO structures is relatively complicated; the diamond pattern and strip pattern suitable for a single layer ITO structure are relatively simple.
  • the ITO electrode plate is increased in the X direction by using the above two types of structures.
  • the overlapping area and the facing area between the ITO electrode and the ITO electrode in the Y direction increase the mutual capacitance between the ITO electrode in the X direction and the ITO electrode in the Y direction.
  • the detection sensitivity of the touch IC can be improved, because the detection principle of the touch IC is to measure the amount of change in the capacitance before and after the user's finger touches the screen.
  • the Pattern structure used in the embodiment of the present invention is larger than the conventional Pattern overlap area and the facing area, that is, the mutual capacitance between the ITO electrode in the X direction and the ITO electrode in the Y direction is increased, and the user absorbs electricity when touched by a finger.
  • the larger the load which is beneficial to the detection of the touch point, improves the detection sensitivity of the Touch IC.
  • Embodiments of the present invention are directed to a touch screen that includes the ITO electrode plates described above.
  • the above ITO electrode plate of the embodiment of the present invention is suitable for pattern design of various touch screens, such as any touch screen structure suitable for SITO, DITO, GIF, G2F, and the like.
  • Embodiments of the present invention also relate to a touch display device including the touch screen described above.

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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)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)
  • Push-Button Switches (AREA)

Abstract

本发明的实施例公开了一种电容式触摸屏的电极板、触摸屏及触控显示装置，该电极板为氧化铟锡（ITO）电极板，其包括导通通路Channel和ITO线，并且至少一条导通通路连接至少两条ITO线。触摸屏包括所述电极板。触控显示装置包括所述触摸屏。采用本发明，能提高使用触摸屏的可靠性，即便ITO电极发生断路，也能确保触摸屏的正常使用。

Description

电容式触摸屏的电极板、 触摸屏及触控显示装置
技术领域
本发明的实施例涉及一种电容式触摸屏的电极板、触摸屏及触控显示装 置。 背景技术
随着平板电脑的推广， 触摸屏技术发展十分迅速， 针对现有的触摸屏设 计而言， 现有的触摸屏图案 （Pattern ), 即氧化铟锡（ ITO ) 电极板上的 ITO 电极走线布局结构如图 3、 图 4所示。 现有的 ITO电极的走线布局结构无论 采用何种形状的图案， 都是每一条导通通路（Channel ) 连接一条 ITO 线 ( Line ), 因此， 当一条 Channel上的 ITO电极发生一处断路时， 整个触摸 屏就无法正常工作了， 使用触摸屏的可靠性大大降低。 发明内容
有鉴于此，本发明的实施例的主要目的在于提供一种电容式触摸屏的电 极板、 触摸屏及触控显示装置， 能提高使用触摸屏的可靠性， 即便 ITO电极 发生断路， 也能确保触摸屏的正常使用。
为达到上述目的， 本发明的实施例的技术方案如下：
一种电容式触摸屏的电极板， 所述电极板为 ITO电极板， 其包括导通通 路 Channel和 ITO线， 并且所述至少一条 Channel连接至少两条 ITO线。
其中， 所述 Channel和所述 ITO线包括沿第一方向设置的所述 Channel 和所述 ITO 线， 在所述第一方向上， 每至少两条所述 ITO 线与一条所述 Channel相连接。
其中， 所述 Channel和所述 ITO线包括沿与所述第一方向相交叉的第二 方向设置的所述 Channel和所述 ITO线， 在所述第二方向上， 每至少两条所 述 ΙΤΟ线与一条所述 Channel相连， 其中， 沿第一方向设置的 ITO线与沿第 二方向设置的 ITO线彼此相绝缘。
其中， 所述 ITO 电极的走线布局结构为网状图案时， 适用于多层 ITO 结构； 所述 ITO电极的走线布局结构为菱形图案或条状图案时， 适用于单层 ITO结构。
其中， 每条 ITO走线的宽为现有 ITO走线的一半面积。
一种触摸屏包括上述的电极板。
一种触控显示装置包括上述的所述触摸屏。
采用本发明的实施例， 由于一条 Channel连接至少两条 ITO Line, 至少 两条 ITO Line能互为保护， 因此， 采用这种互为保护的 ITO Line, 能确保整 个触摸屏的正常工作， 提高使用触摸屏的可靠性。 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为本发明的实施例的 ITO电极的走线布局结构的一个示意图； 图 2为本发明的实施例的 ITO电极的走线布局结构的另一个示意图； 图 3为现有的 ITO电极的走线布局结构的一个示意图；
图 4为现有的 ITO电极的走线布局结构的另一个示意图。 具体实施方式 下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行 清楚、 完整地描述。 显然， 所描述的实施例仅仅是本发明一部分实施例， 而 不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做 出创造性劳动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。
本发明的实施例的基本思想是： 在电容式触摸屏的电极板及触摸屏中， 例如投射电容式电极板及触摸屏中， ITO电极板上的 ITO电极走线布局结构 为至少一条 Channel连接至少两条 ITO Line。
下面结合附图对技术方案的实施作进一步的详细描述。
一种电容式触摸屏的电极板，该电极板为 ITO电极板，该 ITO电极板上 的 ITO电极走线布局结构为至少一条 Channel连接至少两条 ITO Line。
进一步的， 沿第一方向设置的每至少两条所述 ITO 线与一条所述 Ch纖 el相连接。
进一步的， 沿与所述第一方向相交叉的第二方向设置的每至少两条所述 ITO线与一条所述 Channel相连， 其中， 沿第一方向设置的 ITO线与沿第二 方向设置的 ITO线彼此相绝缘。
本发明的实施例是采用至少一条 Channel连接至少两条 ITO Line, 而现 有技术是采用每条 Channel连接一条 ITO Line, 可见采用本发明的实施例， 至少两条 ITO Line能互为保护， 即当每条 Channel连接的其中一条 ITO Line 出现问题， 例如使 ITO电极发生一处断路时， 立即启用 Channel连接的另一 条 ITO Line进行电路导通，也就是说，另一条 ITO Line仍导通，则该 Channel 仍可正常工作， 触摸屏也就能正常工作， 从而采用这种互为保护的两条 ITO Line, 能确保整个触摸屏的正常工作， 提高使用触摸屏的可靠性。
如图 1、 图 2所示分别为本发明的实施例的 ITO电极的走线布局结构示 意图。 其中， 图 1的 ITO电极的走线布局结构为网状图案， 对比现有技术图 3的结构而言，每条 ITO 走线的宽可以约为现有 ITO走线的一半面积。 图 1 的该种结构适用于多层 ITO结构。图 2的 ITO电极的走线布局结构为菱形图 案，对比现有技术图 4的结构而言，每条 ITO走线的宽可以约为现有 ITO走 线的一半面积。图 2的该种结构适用于单层 ITO结构，本发明的实施例的 ITO 电极的走线布局结构还可以采用条状图案， 也适用于单层 ITO结构， 不做赘 述。
具体的，适用于多层 ITO结构的网状结构至少采用双层 ITO膜，适用于 单层 ITO结构的菱形图案和条状图案可以制造成单层 ITO膜， 但无论哪种 类型的结构，都需要以搭桥方式连接 X方向（横向）或 Y (纵向）方向的 ITO 电极。 沿 X方向设置的连接有不同 Channel的 ITO线与沿 Y方向设置的连 接有不同 Channel的 ITO线彼此相绝缘。适用于多层 ITO结构的网状结构工 艺相对复杂； 适用于单层 ITO 结构的菱形图案和条状图案相对来说工艺筒 单。
本发明的实施例， 采用上述两种类型的结构， ITO电极板增大了 X方向
ITO电极与 Y方向的 ITO电极之间的交叠面积和正对面积，即增大了 X方向 ITO电极与 Y方向的 ITO电极之间的互电容。采用本发明的实施例，除了提 高使用触摸屏的可靠性， 还能提高 Touch IC的检测灵敏度， 因为 Touch IC 的检测原理是测量用户手指触摸屏幕前、 后的电容量的变化量。 本发明的实 施例采用的 Pattern结构较常规 Pattern交叠面积和正对面积大， 即增大了 X 方向 ITO电极与 Y方向的 ITO电极之间的互电容， 用户手指触摸时吸收电 荷量变大， 有利于触控点的检出， 则提高了 Touch IC的检测灵敏度。
本发明的实施例涉及一种触摸屏，所述触摸屏包括上述所描述的 ITO电 极板。 本发明的实施例的上述 ITO电极板适用于各种触摸屏的 pattern设计， 如适用于 SITO、 DITO、 GIF, G2F等任何触摸屏的结构。
本发明的实施例还涉及一种触控显示装置， 所述触控显示装置包括上述 所描述的触摸屏。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、 一种电容式触摸屏的电极板， 所述电极板为氧化铟锡 ITO电极板， 其包括导通通路 Channel和 ITO线， 并且至少一条导通通路 Channel连接至 少两条 ITO线。
2、 根据权利要求 1所述的电极板， 其中， 所述 Channel和所述 ITO线 包括沿第一方向设置的所述 Channel和所述 ITO线， 在所述第一方向上， 每 至少两条所述 ITO线与一条所述 Channel相连接。
3、 根据权利要求 2所述的电极板， 其中， 所述 Channel和所述 ITO线 包括沿与所述第一方向相交叉的第二方向设置的所述 Channel 和所述 ITO 线， 在所述第二方向上， 每至少两条所述 ITO线与一条所述 Channel相连， 并且沿第一方向设置的 ITO线与沿第二方向设置的 ITO线彼此相绝缘。
4、 根据权利要求 1-3中任一项所述的电极板， 其中， 所述 ITO电极的 走线布局结构被设置成网状图案， 用于多层 ITO结构。
5、 根据权利要求 1-3中任一项所述的电极板， 其中所述 ITO电极的走 线布局结构被设置成菱形图案和条状图案中的一种， 用于单层 ITO结构。
6、 一种触摸屏， 包括权利要求 1至 5中任一项所述的电极板。
7、 一种触控显示装置， 包括如权利要求 6所述的触摸屏。
PCT/CN2013/076086 2013-03-15 2013-05-22 电容式触摸屏的电极板、触摸屏及触控显示装置 WO2014139215A1 (zh)

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