WO2016123821A1 - 电容式感应元件、触摸屏及电子设备 - Google Patents

电容式感应元件、触摸屏及电子设备 Download PDF

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Publication number
WO2016123821A1
WO2016123821A1 PCT/CN2015/073407 CN2015073407W WO2016123821A1 WO 2016123821 A1 WO2016123821 A1 WO 2016123821A1 CN 2015073407 W CN2015073407 W CN 2015073407W WO 2016123821 A1 WO2016123821 A1 WO 2016123821A1
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WIPO (PCT)
Prior art keywords
connecting bridge
sensing
conductive line
connecting portion
bridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2015/073407
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English (en)
French (fr)
Inventor
郭星灵
黄耀立
李曼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/646,018 priority Critical patent/US20160370939A1/en
Publication of WO2016123821A1 publication Critical patent/WO2016123821A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Definitions

  • the present invention relates to the field of capacitive sensing technology, and more particularly to capacitive sensing elements, touch screens, and electronic devices.
  • the touch screen is the most simple, convenient and natural human-computer interaction method, and is increasingly applied to various electronic products.
  • the touch screen can be divided into four types: resistive, capacitive, infrared, and surface acoustic waves.
  • the mutual capacitance sensing touch screen has a good suppression effect on noise and ground parasitic capacitance, and can realize true multi-touch, and thus has become the main direction of various capacitive touch screen manufacturers.
  • Capacitive Sensor The pattern is a capacitive sensing element.
  • the schematic diagram of the conventional capacitive sensing element is shown in FIG. 1.
  • the transparent first conductive line and the second conductive line are formed into a diamond-like shape that overlaps vertically and horizontally, because the first
  • the signals transmitted by the conductive lines and the second conductive lines are not short-circuited, so there is an insulation layer (IL) at the overlap, and then the connection is made by metal bridges.
  • IL insulation layer
  • the touch screen is in electrostatic contact with the environment (such as static test or daily use)
  • ESD electrostatic discharge
  • Breaking or blasting the insulation layer at the overlap causing a short circuit or open circuit between the sensing circuit traces to affect the touch screen performance.
  • the Chinese patent CN 103902092 published on July 2, 2014 A discloses a touch screen comprising a first conductive line extending in a first direction, the first conductive line comprising a plurality of first sensing electrodes spaced apart in the first direction and connected to two adjacent ones a first connecting bridge between the first sensing electrodes, the first connecting bridge includes a first tip, the touch screen further comprising an auxiliary discharge structure, the auxiliary discharging structure is insulated from the first conductive line and includes a second tip, A second tip is disposed opposite the first tip.
  • the touch screen has good antistatic interference capability.
  • the first tip is provided on the first connecting bridge, and the auxiliary discharge structure is also provided and the second tip is provided on the auxiliary discharge structure, this increases the wire area of the connecting bridge, and further, the auxiliary discharge structure It is disposed in the middle of the sensing electrode, which increases the length of the metal wire, thereby increasing the area of the metal wire, greatly reducing the effective transmission area of the sensing circuit, and affecting the transmittance of the screen.
  • the tip structure and the auxiliary discharge structure complicate the structure of the entire touch screen, resulting in increased production difficulty and high cost.
  • the technical problem to be solved by the present invention is to provide a capacitive sensing element, a touch screen and an electronic device, which can not only effectively reduce the probability of occurrence of electrostatic discharge, but also has a simple structure and a high transmittance.
  • the capacitive sensing element includes a first conductive line extending in a first direction and a second conductive line extending in a second direction and insulated from the first conductive line.
  • the first conductive line includes a plurality of first sensing electrodes spaced apart in the first direction and a first connecting bridge connected between adjacent two first sensing electrodes.
  • the second conductive line includes a plurality of second sensing electrodes spaced apart in the second direction and a second connecting bridge connected between the adjacent two second sensing electrodes.
  • the first sensing electrode and the second sensing electrode are offset from each other on the same plane; the second connecting bridge bypasses the first connecting bridge to avoid electrostatic discharge at the intersection, causing a short circuit or an open circuit,
  • the first connecting bridge and the second connecting bridge are both smooth wires.
  • At least one second connecting bridge between two adjacent second sensing electrodes is disposed.
  • the second connecting bridge is a curve.
  • the second connecting bridge is a broken line.
  • the second connecting bridge includes a first connecting portion, a second connecting portion and a third connecting portion connected in sequence; the second connecting portion extends along the second direction; the second connecting bridge passes An independent region is segmented on the first sensing electrode, and the second connecting portion is disposed in the independent region and is isolated from the first sensing electrode.
  • the material of the second connecting portion is a transparent conductive material.
  • first direction is perpendicular to the second direction.
  • the first sensing electrode and the second sensing electrode are all in a diamond shape.
  • the touch screen includes the above capacitive sensing element, the capacitive sensing element comprising: a first conductive line extending in a first direction; and a second conductive line extending in a second direction and insulated from the first conductive line.
  • the first conductive line includes a plurality of first sensing electrodes spaced apart in the first direction and a first connecting bridge connected between adjacent two first sensing electrodes.
  • the second conductive line includes a plurality of second sensing electrodes spaced apart in the second direction and a second connecting bridge connected between the adjacent two second sensing electrodes.
  • the first sensing electrode and the second sensing electrode are offset from each other on the same plane; the second connecting bridge bypasses the first connecting bridge to avoid electrostatic discharge at the intersection, causing a short circuit or an open circuit,
  • the first connecting bridge and the second connecting bridge are both smooth wires.
  • At least one second connecting bridge between two adjacent second sensing electrodes is disposed.
  • the second connecting bridge is a curve.
  • the second connecting bridge is a broken line.
  • the second connecting bridge includes a first connecting portion, a second connecting portion and a third connecting portion connected in sequence; the second connecting portion extends along the second direction; the second connecting bridge passes An independent region is segmented on the first sensing electrode, and the second connecting portion is disposed in the independent region and is isolated from the first sensing electrode.
  • the material of the second connecting portion is a transparent conductive material.
  • the electronic device includes a touch screen, the touch screen includes the capacitive sensing element, the capacitive sensing element includes: a first conductive line extending in a first direction and extending in a second direction and insulated from the first conductive line The second conductive line.
  • the first conductive line includes a plurality of first sensing electrodes spaced apart in the first direction and a first connecting bridge connected between adjacent two first sensing electrodes.
  • the second conductive line includes a plurality of second sensing electrodes spaced apart in the second direction and a second connecting bridge connected between the adjacent two second sensing electrodes.
  • the first sensing electrode and the second sensing electrode are offset from each other on the same plane; the second connecting bridge bypasses the first connecting bridge to avoid electrostatic discharge at the intersection, causing a short circuit or an open circuit,
  • the first connecting bridge and the second connecting bridge are both smooth wires.
  • At least one second connecting bridge between two adjacent second sensing electrodes is disposed.
  • the second connecting bridge is a curve.
  • the second connecting bridge is a broken line.
  • the second connecting bridge includes a first connecting portion, a second connecting portion and a third connecting portion connected in sequence; the second connecting portion extends along the second direction; the second connecting bridge passes An independent region is segmented on the first sensing electrode, and the second connecting portion is disposed in the independent region and is isolated from the first sensing electrode.
  • the material of the second connecting portion is a transparent conductive material.
  • the invention has the beneficial effects that: different from the prior art, the invention avoids the intersection of the first connecting bridge and the second connecting bridge by bypassing the second connecting bridge, thereby preventing the signal charge at the intersection. Excessive concentration and electrostatic discharge phenomenon, so that the insulation layer between the first conductive line and the second conductive line is broken down or blown up, causing a short circuit or an open circuit at the intersection, thereby improving the stability of the touch signal transmission. .
  • the first connecting bridge and the second connecting bridge are smooth wires, which reduce the area of the wires, thereby increasing the effective transmission area of the sensing circuit, improving the transmittance of the screen, and simplifying the first connecting bridge. And the structure of the second connecting bridge reduces production difficulty and cost.
  • FIG. 1 is a schematic structural view of a conventional capacitive sensing element
  • FIG. 2 is a schematic structural view of a first embodiment of a capacitive sensing element of the present invention
  • Fig. 3 is a schematic view showing the structure of a second embodiment of the capacitive sensing element of the present invention.
  • FIG. 1 is a schematic structural view of a first embodiment of a capacitive sensing element of the present invention.
  • the capacitive sensing element includes a first conductive line 10 extending in a first direction and a second conductive line 11 extending in a second direction and insulated from the first conductive line 10.
  • the first direction and the second direction are different, for example, in the present embodiment, the first direction and the second direction are perpendicular to each other.
  • the first conductive line 10 includes a plurality of first sensing electrodes 100 spaced apart in a first direction and a first connecting bridge 101 connected between adjacent two first sensing electrodes 100.
  • the second conductive line 11 includes a plurality of second sensing electrodes 110 spaced apart in the second direction and a second connecting bridge 111 connected between the adjacent two second sensing electrodes 110.
  • the first sensing electrode 100 and the second sensing electrode 110 are arranged in an array and are staggered from each other on the same plane. As in this embodiment, the first sensing electrode 100 and the second sensing electrode 110 are all in a diamond shape. In the first direction, the diagonal lines of the first sensing electrodes 100 of each row are on a straight line, and in the second direction, the diagonal lines of the second sensing electrodes 110 of each column are in a straight line.
  • the first connection bridge 101 is bridged across the two corners of the adjacent two diamond shaped first sensing electrodes 100.
  • the first conductive line 10 may be made of a material, for example, the first sensing electrode 100 and the first connecting bridge 101 are both transparent conductive materials.
  • the material of the second sensing electrode 110 may be the same as that of the first sensing electrode 100, and is also a transparent conductive material such as ITO or AZO.
  • the second connecting bridge 111 can be selected from metal wires.
  • the second connecting bridge 111 bypasses the first connecting bridge 101 to avoid the intersection with the first connecting bridge 101 to generate an overlapping portion, because when there is electrostatic contact with the touch screen, the signal transmitted between the sensing elements is abnormal, especially the transmission.
  • the signal charge on the first connecting bridge 101 and the signal charge on the second connecting bridge 111 are concentrated, it is easy to break down or blow up the first connecting bridge 101 and the second connecting bridge 111 at the overlapping portion.
  • the insulation layer between them causes a short circuit or an open circuit, which affects the touch performance.
  • the first connecting bridge 101 and the second connecting bridge 111 of the present invention do not cross, so that there is no overlapping portion, so that the overlapping portions of the two signal charges can be avoided, thereby reducing the occurrence of breakdown or blowing of the insulating layer.
  • the first connecting bridge 101 and the second connecting bridge 111 are smooth wires, and there is no need to provide other auxiliary structures, which can improve the touch performance without increasing the area of the metal wires, thereby not affecting the transmission of the screen. rate.
  • the smooth wire structure is simple, the production is difficult, and the cost is low.
  • the second connecting bridge 111 may be a continuous curved line or a continuous broken line, or may be a segmented broken line as long as the first connecting bridge 101 can be bypassed.
  • the second connecting bridge 111 between the adjacent two second sensing electrodes 110 of the present embodiment is provided with two, and is symmetrically distributed, and both are continuous broken lines.
  • the two second connecting bridges 111 can ensure that when one of the routes is disconnected from the ESD, another line can ensure the transmission of the touch signal, thereby improving the quality of the sensing element.
  • the line can be shunted after changing from one to two. When a large current is passed through the ESD, the circuit can be shunted to reduce the probability of breakdown and risk.
  • the present invention avoids the intersection of the first connecting bridge 101 and the second connecting bridge 111 by bypassing the second connecting bridge 111, thereby preventing the signal charge from being excessively concentrated at the intersection.
  • the electrostatic discharge phenomenon occurs, so that the insulating layer between the first conductive line 10 and the second conductive line 11 is broken down or blown up, causing a short circuit or an open circuit at the intersection, thereby improving the stability of the touch signal transmission.
  • the first connecting bridge 101 and the second connecting bridge 111 are smooth wires, which reduce the area of the wires, thereby increasing the effective transmission area of the sensing circuit, improving the transmittance of the screen, and simplifying the first The structure of the bridge 101 and the second bridge 111 reduces production difficulty and cost.
  • FIG. 3 is a schematic structural view of a second embodiment of the capacitive sensing element of the present invention.
  • the difference between this embodiment and the first embodiment is that the second connecting bridge 211 in this embodiment is a segmented broken line.
  • the second connecting bridge 211 includes a first connecting portion 212, a second connecting portion 213, and a third connecting portion 213 that are sequentially connected.
  • the second connecting portion 213 extends in the second direction.
  • the first sensing electrode 200 passing through the second connecting bridge 211 is divided into a separate region 202.
  • the second connecting portion 213 is disposed in the independent region 202 and is isolated from the first sensing electrode 200.
  • the second connecting bridge 211 connects the adjacent two second sensing electrodes 210 through the first connecting portion 212, the second connecting portion 213, and the third connecting portion 213 which are sequentially connected, and bypasses the first connecting bridge.
  • a position at which the first connection portion 212 is connected to the second sensing electrode 210 is disposed at a position of a corner of the diamond of the second sensing electrode 210, and the independent region 202 is disposed at a position of an angle of the first sensing electrode 200,
  • the position is close to the adjacent two second sensing electrodes 210, and the position where the third connecting portion 213 is connected to the other second sensing electrode 210 is also at the position of the corner of the second sensing electrode 210, thereby shortening
  • the length of the second connecting portion 213 and the third connecting portion 213 thus reduces the area of the wire, thereby increasing the effective transmission area of the sensing circuit and increasing the transmittance of the screen.
  • the second connecting bridge 211 can be a metal wire.
  • the material of the second connecting portion 213 is selected from a transparent conductive material, for example, the same material as the second sensing electrode 210, thereby further shortening the metal wire used by the second connecting bridge 211.
  • the length can be improved on the basis of improving the stability of the touch without reducing the transmittance of the plane.
  • the present invention also provides a touch screen including the above capacitive sensing element.
  • the present invention also provides an electronic device including a touch screen having the above capacitive sensing element.
  • the touch screen has high touch performance and stable signal transmission.
  • the capacitive sensing element, the touch screen and the electronic device of the invention use the smooth wire as the first connecting bridge and the second connecting bridge, and the first connecting bridge and the second connecting bridge do not cross, thereby avoiding static electricity at the intersection
  • the discharge causes a short circuit or an open circuit, thereby improving the stability of the touch signal transmission.
  • the area of the wire is reduced, the effective transmission area of the sensing circuit is increased, the transmittance of the screen is improved, and the structure of the first connecting bridge and the second connecting bridge is simplified, thereby reducing production difficulty and cost.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

本发明公开了一种电容式感应元件、触摸屏及电子设备，包括沿第一方向延伸的第一导电线路和沿第二方向延伸且与第一导电线路绝缘交迭设置的第二导电线路；第一导电线路包括多个第一感测电极及第一连接桥；第二导电线路包括多个第二感测电极及第二连接桥。第二连接桥绕开第一连接桥以避免在交叉处发生静电放电短路或断路，第一连接桥和第二连接桥为光滑导线。本发明能够降低静电放电的发生几率，且结构简单，同时具有较高的穿透率。

Description

电容式感应元件、触摸屏及电子设备
【技术领域】
本发明涉及电容式感应技术领域，特别是涉及电容式感应元件、触摸屏及电子设备。
【背景技术】
触摸屏作为一种输入媒介，是目前最为简单、方便、自然的一种人机交互方式，被越来越多的应用到各种电子产品中。根据工作原理和检测触摸信息的介质的不同，触摸屏可分为电阻式、电容式、红外线式、表面声波四种类型。其中，互电容感应触摸屏对噪声和对地寄生电容有很好的抑制作用，并且可以实现真正的多点触控，因此已经成为各电容式触摸屏厂商主攻的方向。
电容式Sensor pattern即电容式感应元件，传统的电容式感应元件的结构示意图如图1所示，一般是把透明的第一导电线路和第二导电线路做成横竖交叠的类似菱形的形状，因为第一导电线路和第二导电线路传输的信号不同不能短路，所以在交叠处会有一层绝缘层(IL)隔开，然后用连接桥通过金属桥接的方式实现连接。当触控屏幕使用环境（如静电测试或日常使用中）有静电接触时，感应电路之间传输的信号容易出现异常，特别是传输大电流的时候，桥接的地方很可能会发生ESD（静电放电）击穿或炸毁交叠处的绝缘层，而导致感应电路走线之间发生短路或断路从而影响触摸屏性能。
为解决上述问题，2014年7月2号公开的中国专利CN 103902092 A揭示了一种触摸屏，该触摸屏包括沿第一方向延伸的第一导电线路，该第一导电线路包括多个间隔排列在该第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥，该第一连接桥包括第一尖端，该触摸屏还包括辅助放电结构，该辅助放电结构与该第一导电线路绝缘设置且包括第二尖端，该第二尖端与该第一尖端相对设置。该触摸屏的抗静电干扰能力较好。但是，由于在第一连接桥上设置了第一尖端，并且还设置了辅助放电结构以及在辅助放电结构上设置了第二尖端，这增大了连接桥的金属线面积，此外，辅助放电结构设置在感测电极的中间，这使得金属线的长度增长，从而使得金属线的面积增大，大大降低了感应电路的有效透过区，影响了屏幕的穿透率。并且，该尖端结构和辅助放电结构使得整个触摸屏的结构复杂化，导致生产难度加大，且成本高。
【发明内容】
本发明主要解决的技术问题是提供一种电容式感应元件、触摸屏及电子设备，不仅能够有效降低静电放电的发生几率，且结构简单，同时具有较高的穿透率。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种电容式感应元件。该电容式感应元件包括沿第一方向延伸的第一导电线路和沿第二方向延伸且与所述第一导电线路绝缘交迭设置的第二导电线路。所述第一导电线路包括多个间隔排列在所述第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥。所述第二导电线路包括多个间隔排列在所述第二方向上的第二感测电极及连接于相邻两个第二感测电极之间的第二连接桥。所述第一感测电极和所述第二感测电极在同一平面上相互错开；所述第二连接桥绕开所述第一连接桥以避免在交叉处易发生静电放电导致短路或断路，所述第一连接桥和所述第二连接桥均为光滑的导线。
其中，相邻两个第二感测电极之间的第二连接桥至少设置有一个。
其中，所述第二连接桥为曲线。
其中，所述第二连接桥为折线。
其中，所述第二连接桥包括依次连接的第一连接部、第二连接部和第三连接部；所述第二连接部沿着所述第二方向延伸；所述第二连接桥经过的所述第一感测电极上分割出一个独立区域，所述第二连接部设置在该独立区域中，且与所述第一感测电极隔离。
其中，所述第二连接部的材料为透明导电材料。
其中，所述第一方向与所述第二方向垂直。
其中，所述第一感测电极和所述第二感测电极均呈菱形。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种触摸屏。该触摸屏包括上述电容感应元件，所述电容感应元件包括：沿第一方向延伸的第一导电线路和沿第二方向延伸且与所述第一导电线路绝缘交迭设置的第二导电线路。所述第一导电线路包括多个间隔排列在所述第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥。所述第二导电线路包括多个间隔排列在所述第二方向上的第二感测电极及连接于相邻两个第二感测电极之间的第二连接桥。所述第一感测电极和所述第二感测电极在同一平面上相互错开；所述第二连接桥绕开所述第一连接桥以避免在交叉处易发生静电放电导致短路或断路，所述第一连接桥和所述第二连接桥均为光滑的导线。
其中，相邻两个第二感测电极之间的第二连接桥至少设置有一个。
其中，所述第二连接桥为曲线。
其中，所述第二连接桥为折线。
其中，所述第二连接桥包括依次连接的第一连接部、第二连接部和第三连接部；所述第二连接部沿着所述第二方向延伸；所述第二连接桥经过的所述第一感测电极上分割出一个独立区域，所述第二连接部设置在该独立区域中，且与所述第一感测电极隔离。
其中，所述第二连接部的材料为透明导电材料。
为解决上述技术问题，本发明采用的又一个技术方案是：提供一种电子设备。该电子设备包括触摸屏，所述触摸屏包括上述电容感应元件，所述电容感应元件包括：沿第一方向延伸的第一导电线路和沿第二方向延伸且与所述第一导电线路绝缘交迭设置的第二导电线路。所述第一导电线路包括多个间隔排列在所述第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥。所述第二导电线路包括多个间隔排列在所述第二方向上的第二感测电极及连接于相邻两个第二感测电极之间的第二连接桥。所述第一感测电极和所述第二感测电极在同一平面上相互错开；所述第二连接桥绕开所述第一连接桥以避免在交叉处易发生静电放电导致短路或断路，所述第一连接桥和所述第二连接桥均为光滑的导线。
其中，相邻两个第二感测电极之间的第二连接桥至少设置有一个。
其中，所述第二连接桥为曲线。
其中，所述第二连接桥为折线。
其中，所述第二连接桥包括依次连接的第一连接部、第二连接部和第三连接部；所述第二连接部沿着所述第二方向延伸；所述第二连接桥经过的所述第一感测电极上分割出一个独立区域，所述第二连接部设置在该独立区域中，且与所述第一感测电极隔离。
其中，所述第二连接部的材料为透明导电材料。
本发明的有益效果是：区别于现有技术，本发明通过将第二连接桥绕开第一连接桥，从而避免第一连接桥与第二连接桥发生交叉，进而防止在交叉处由于信号电荷过于集中而发生静电放电现象，从而使第一导电线路和第二导电线路之间的绝缘层被击穿或炸毁而导致在交叉处发生短路或者断路，进而提高了触控信号传输的稳定性。并且，该第一连接桥和第二连接桥均为光滑的导线，减小了导线的面积，从而增加了感应电路的有效透过区，提高屏幕的穿透率，并且简化了第一连接桥和第二连接桥的结构，降低生产难度和成本。
【附图说明】
图1是传统的电容式感应元件的结构示意图；
图2是本发明电容式感应元件第一实施例的结构示意图；
图3是本发明电容式感应元件第二实施例的结构示意图。
【具体实施方式】
下面结合附图和具体实施方式对本发明进行详细说明。
请参阅图1，是本发明电容式感应元件第一实施例的结构示意图。该电容式感应元件包括沿第一方向延伸的第一导电线路10和沿第二方向延伸且与第一导电线路10绝缘交迭设置的第二导电线路11。第一方向和第二方向不相同，例如，在本实施例中，第一方向和第二方向相互垂直。
第一导电线路10包括多个间隔排列在第一方向上的第一感测电极100及连接于相邻两个第一感测电极100之间的第一连接桥101。第二导电线路11包括多个间隔排列在第二方向上的第二感测电极110及连接于相邻两个第二感测电极110之间的第二连接桥111。
具体而言，第一感测电极100和第二感测电极110呈阵列状排列，在同一平面上相互错开。如本实施例中，第一感测电极100和第二感测电极110均呈菱形。在第一方向上，每一行的第一感测电极100的对角线在一条直线上，在第二方向上，每一列的第二感测电极110的对角线在一条直线上。第一连接桥101跨接在相邻的两个菱形的第一感测电极100的两个角上。第一导电线路10可以是一种材料制成的，例如第一感测电极100和第一连接桥101均是透明导电材料。第二感测电极110的材料可以和第一感测电极100的材料相同，也是透明导电材料，例如，ITO或者AZO。第二连接桥111可以选用金属导线。
第二连接桥111绕开第一连接桥101以避免与第一连接桥101交叉而产生交叠部位，因为当有静电接触到触控屏幕，感应元件之间传输的信号出现异常，特别是传输大电流的时候，由于第一连接桥101上的信号电荷与第二连接桥111上的信号电荷较为集中，在交叠部位容易击穿或者炸毁第一连接桥101和第二连接桥111之间的绝缘层，导致发生短路或者断路现象，影响触控性能。本发明的第一连接桥101与第二连接桥111并不交叉，因而不存在交叠部位，所以能避免两个信号电荷集中的部位交叠，因而减少了发生击穿或炸毁绝缘层的现象的几率，从而避免在交叠处发生静电放电导致短路或断路，提高了触控性能。并且，该第一连接桥101和第二连接桥111均为光滑的导线，无需设置其他辅助结构，既能提高触控性能，又不会增加金属导线的面积，因而不会影响屏幕的透过率。并且，光滑的导线结构叫简单，生产难度低，成本低。
相邻两个第二感测电极110之间的第二连接桥111至少设置有一个。第二连接桥111可以是连续的曲线或者连续的折线，也可以是分段的折线，只要能绕开第一连接桥101即可。举例而言，在本实施例的相邻两个第二感测电极110之间的第二连接桥111设置有两个，且呈对称分布，并且都是连续的折线。设置两个第二连接桥111可以保证当其中一路由于ESD发生断路的时候，还有另一根线路可以保证触控信号传输，从而提高了感应元件的品质。另一方面，线路由一变二后可以起到分流的作用，当发生ESD有大电流通过时，可以将电路分流，降低击穿几率和风险。
区别于现有技术，本发明通过将第二连接桥111绕开第一连接桥101，从而避免第一连接桥101与第二连接桥111发生交叉，进而防止在交叉处由于信号电荷过于集中而发生静电放电现象，从而使第一导电线路10和第二导电线路11之间的绝缘层被击穿或炸毁而导致在交叉处发生短路或者断路，进而提高了触控信号传输的稳定性。并且，该第一连接桥101和第二连接桥111均为光滑的导线，减小了导线的面积，从而增加了感应电路的有效透过区，提高屏幕的穿透率，并且简化了第一连接桥101和第二连接桥111的结构，降低生产难度和成本。
请参阅图3，是本发明电容式感应元件第二实施例的结构示意图。
本实施例与第一实施例的区别在于，本实施例中的第二连接桥211为分段的折线。该第二连接桥211包括依次连接的第一连接部212、第二连接部213和第三连接部213。第二连接部213沿着第二方向延伸。第二连接桥211经过的第一感测电极200上分割出一个独立区域202，第二连接部213设置在该独立区域202中，且与第一感测电极200隔离。第二连接桥211通过依次连接的第一连接部212、第二连接部213和第三连接部213将相邻的两个第二感测电极210连接起来，并且绕过了第一连接桥。因而能避免在交叠处发生静电放电导致短路或断路，提高了触控性能。同时，将第一连接部212与第二感测电极210连接的位置设置在第二感测电极210菱形的角的位置处，独立区域202设在第一感测电极200的角的位置处，其所在位置靠近相邻两个第二感测电极210，第三连接部213与另一个第二感测电极210连接的位置也在该第二感测电极210的角的位置处，从而缩短了第二连接部213和第三连接部213的长度，因而减小了导线的面积，进而增加了感应电路的有效透过区域，提高屏幕的穿透率。该第二连接桥211可以是金属导线。为了进一步增加感应电路的有效透过区域，第二连接部213的材料选用透明导电材料，例如可以是与第二感测电极210相同的材料，从而进一步缩短了第二连接桥211使用的金属导线的长度，这样就可以在提高触控稳定性的基础上，也不会减少平面的穿透率。
本发明同时还提供了一种触摸屏，该触摸屏包括上述电容式感应元件。另外，本发明还提供了一种电子设备，该电子设备包括具有上述电容式感应元件的触摸屏。该触摸屏的触控性能高，信号传输稳定。
本发明的电容式感应元件、触摸屏以及电子设备通过使用光滑的导线作为第一连接桥和第二连接桥，并且第一连接桥与第二连接桥并不交叉，从而避免了在交叉处发生静电放电导致短路或者断路，进而提高了触控信号传输的稳定性。同时还减小了导线的面积，增加了感应电路的有效透过区，提高屏幕的穿透率，并且还简化了第一连接桥和第二连接桥的结构，降低生产难度和成本。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种电容式感应元件，其中，包括沿第一方向延伸的第一导电线路和沿第二方向延伸且与所述第一导电线路绝缘交迭设置的第二导电线路；
    所述第一导电线路包括多个间隔排列在所述第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥；
    所述第二导电线路包括多个间隔排列在所述第二方向上的第二感测电极及连接于相邻两个第二感测电极之间的第二连接桥；
    所述第一感测电极和所述第二感测电极在同一平面上相互错开；所述第二连接桥绕开所述第一连接桥以避免在交叉处易发生静电放电导致短路或断路，所述第一连接桥和所述第二连接桥均为光滑的导线。
  2. 根据权利要求1所述的电容式感应元件，其中，相邻两个第二感测电极之间的第二连接桥至少设置有一个。
  3. 根据权利要求1所述的电容式感应元件，其中，所述第二连接桥为曲线。
  4. 根据权利要求1所述的电容式感应元件，其中，所述第二连接桥为折线。
  5. 根据权利要求1所述的电容式感应元件，其中，所述第二连接桥包括依次连接的第一连接部、第二连接部和第三连接部；所述第二连接部沿着所述第二方向延伸；所述第二连接桥经过的所述第一感测电极上分割出一个独立区域，所述第二连接部设置在该独立区域中，且与所述第一感测电极隔离。
  6. 根据权利要求5所述的电容式感应元件，其中，所述第二连接部的材料为透明导电材料。
  7. 根据权利要求1所述的电容式感应元件，其中，所述第一方向与所述第二方向垂直。
  8. 根据权利要求1所述的电容式感应元件，其中，所述第一感测电极和所述第二感测电极均呈菱形。
  9. 一种触摸屏，其中，包括电容式感应元件，所述电容式感应元件包括：沿第一方向延伸的第一导电线路和沿第二方向延伸且与所述第一导电线路绝缘交迭设置的第二导电线路；
    所述第一导电线路包括多个间隔排列在所述第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥；
    所述第二导电线路包括多个间隔排列在所述第二方向上的第二感测电极及连接于相邻两个第二感测电极之间的第二连接桥；
    所述第一感测电极和所述第二感测电极在同一平面上相互错开；所述第二连接桥绕开所述第一连接桥以避免在交叉处易发生静电放电导致短路或断路，所述第一连接桥和所述第二连接桥均为光滑的导线。
  10. 根据权利要求9所述的触摸屏，其中，相邻两个所述第二感测电极之间的第二连接桥至少设置有一个。
  11. 根据权利要求9所述的触摸屏，其中，所述第二连接桥为曲线。
  12. 根据权利要求9所述的触摸屏，其中，所述第二连接桥为折线。
  13. 根据权利要求9所述的触摸屏，其中，所述第二连接桥包括依次连接的第一连接部、第二连接部和第三连接部；所述第二连接部沿着所述第二方向延伸；所述第二连接桥经过的所述第一感测电极上分割出一个独立区域，所述第二连接部设置在该独立区域中，且与所述第一感测电极隔离。
  14. 根据权利要求13所述的触摸屏，其中，所述第二连接部的材料为透明导电材料。
  15. 一种电子设备，其中，包括触摸屏，所述触摸屏包括电容式感应元件；
    所述电容式感应元件包括：沿第一方向延伸的第一导电线路和沿第二方向延伸且与所述第一导电线路绝缘交迭设置的第二导电线路；
    所述第一导电线路包括多个间隔排列在所述第一方向上的第一感测电极及连接于相邻两个第一感测电极之间的第一连接桥；
    所述第二导电线路包括多个间隔排列在所述第二方向上的第二感测电极及连接于相邻两个第二感测电极之间的第二连接桥；
    所述第一感测电极和所述第二感测电极在同一平面上相互错开；所述第二连接桥绕开所述第一连接桥以避免在交叉处易发生静电放电导致短路或断路，所述第一连接桥和所述第二连接桥均为光滑的导线。
  16. 根据权利要求15所述的电子设备，其中，相邻两个所述第二感测电极之间的第二连接桥至少设置有一个。
  17. 根据权利要求15所述的电子设备，其中，所述第二连接桥为曲线。
  18. 根据权利要求15所述的电子设备，其中，所述第二连接桥为折线。
  19. 根据权利要求15所述的电子设备，其中，所述第二连接桥包括依次连接的第一连接部、第二连接部和第三连接部；所述第二连接部沿着所述第二方向延伸；所述第二连接桥经过的所述第一感测电极上分割出一个独立区域，所述第二连接部设置在该独立区域中，且与所述第一感测电极隔离。
  20. 根据权利要求19所述的电子设备，其中，所述第二连接部的材料为透明导电材料。
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