WO2016161688A1 - 一种触摸屏及移动终端 - Google Patents

一种触摸屏及移动终端 Download PDF

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Publication number
WO2016161688A1
WO2016161688A1 PCT/CN2015/078545 CN2015078545W WO2016161688A1 WO 2016161688 A1 WO2016161688 A1 WO 2016161688A1 CN 2015078545 W CN2015078545 W CN 2015078545W WO 2016161688 A1 WO2016161688 A1 WO 2016161688A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensing electrode
connecting bridge
touch screen
sensing
conductive line
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
Application number
PCT/CN2015/078545
Other languages
English (en)
French (fr)
Inventor
李曼
黄耀立
郭星灵
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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 US14/646,013 priority Critical patent/US20170045979A1/en
Publication of WO2016161688A1 publication Critical patent/WO2016161688A1/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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0416—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 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D89/00—Aspects of integrated devices not covered by groups H10D84/00 - H10D88/00
    • H10D89/60—Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136204—Arrangements to prevent high voltage or static electricity failures
    • 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • 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
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
    • 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 invention relates to a touch screen and a mobile terminal.
  • the touch screen has many advantages such as fast response speed, accurate positioning, multi-touch support, long service life, etc., and is widely used in mobile terminals.
  • the size of the substrate of the touch screen is increased and the resolution is further improved. Accordingly, the probability of electrostatic damage of the touch screen is higher and higher in the manufacturing process, and not only in the use of the touch screen, but also occurs on the touch screen. Friction also generates a charge, and the static electricity formed by the accumulation of the charge is easily mistaken for the touch screen being touched, which in turn causes false triggering. Therefore, an ESD (electrostatic discharge) circuit is generally required in the touch screen to allow the accumulated charge to be safely released by the circuit in time.
  • ESD electrostatic discharge
  • FIG. 1 is a prior art.
  • FIG. 1 A schematic diagram of a structure of a touch screen that releases static electricity by adding a metal strip. With this structure, there is an electrostatic discharge only on one circumference of the touch screen, and the charge generated by the friction in the middle of the touch screen cannot be released, and the problem of static interference is still not perfectly solved.
  • the invention provides a touch screen and a mobile terminal to solve the problem of electrostatic discharge of the touch screen in the prior art.
  • the present invention provides a touch screen including 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 a plurality of first sensing electrodes spaced apart in a first direction and a first connecting bridge connecting two adjacent first sensing electrodes, wherein the second conductive line includes a plurality of intervals arranged in a second direction a second sensing electrode and a second connecting bridge connecting the two adjacent second sensing electrodes; each of the first sensing electrodes includes at least one tip facing the third direction, and the tip is insulated from the second sensing electrode
  • the first sensing electrode and the second sensing electrode are offset from each other, and the first connecting bridge and the second connecting bridge overlap each other; the first direction and the second direction are perpendicular to each other.
  • the first sensing electrode and the second sensing electrode are both diamond-shaped, and the sides of the first sensing electrode and the sides of the second sensing electrode are parallel to each other.
  • the present invention further provides a touch screen 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
  • the circuit includes a plurality of first sensing electrodes spaced apart in the first direction and a first connecting bridge connecting the adjacent two first sensing electrodes, the second conductive line including a plurality of spaced apart in the second direction a second sensing electrode and a second connecting bridge connecting the two adjacent second sensing electrodes; each of the first sensing electrodes includes at least one tip facing the third direction, and the tip is insulated from the second sensing electrode overlap.
  • the first sensing electrode and the second sensing electrode are offset from each other, and the first connecting bridge and the second connecting bridge overlap each other.
  • the first sensing electrode and the second sensing electrode are both diamond-shaped, and the sides of the first sensing electrode and the sides of the second sensing electrode are parallel to each other.
  • the tip length is greater than the distance between the first sensing electrode and the second sensing electrode.
  • the touch screen further includes an insulating layer, and an insulating layer is disposed between the first connecting bridge and the second connecting bridge.
  • each of the first sensing electrodes includes four tips, and the four tips are respectively disposed on four sides of the first sensing electrodes.
  • first connecting bridge connects the two vertices of the two adjacent first sensing electrodes, and the distance between the tip and the first connecting bridge adjacent thereto is smaller than the distance between the other vertices of the first sensing electrode distance.
  • the side length of the first sensing electrode and the second sensing electrode is 3 mm to 7 mm, and the tip end is 1 mm to 3 mm from the first connecting bridge.
  • first direction and the second direction are perpendicular to each other.
  • the present invention further provides a mobile terminal including a touch screen;
  • the touch screen includes a first conductive line extending in a first direction and a second extending in a second direction and insulated from the first conductive line a conductive line,
  • the first conductive line includes a plurality of first sensing electrodes spaced apart in a first direction and a first connecting bridge connecting the two adjacent first sensing electrodes,
  • the second conductive line comprising a plurality of spaced apart lines a second sensing electrode in a second direction and a second connecting bridge connecting the two adjacent second sensing electrodes;
  • each of the first sensing electrodes includes at least one tip facing the third direction, the tip end
  • the second sensing electrodes are insulated to overlap.
  • the first sensing electrode and the second sensing electrode are offset from each other, and the first connecting bridge and the second connecting bridge overlap each other.
  • the first sensing electrode and the second sensing electrode are both diamond-shaped, and the sides of the first sensing electrode and the sides of the second sensing electrode are parallel to each other.
  • the tip length is greater than the distance between the first sensing electrode and the second sensing electrode.
  • the touch screen further includes an insulating layer, and an insulating layer is disposed between the first connecting bridge and the second connecting bridge.
  • each of the first sensing electrodes includes four tips, and the four tips are respectively disposed on four sides of the first sensing electrodes.
  • first connecting bridge connects the two vertices of the two adjacent first sensing electrodes, and the distance between the tip and the first connecting bridge adjacent thereto is smaller than the distance between the other vertices of the first sensing electrode distance.
  • the side length of the first sensing electrode and the second sensing electrode is 3 mm to 7 mm, and the tip end is 1 mm to 3 mm from the first connecting bridge.
  • first direction and the second direction are perpendicular to each other.
  • the touch screen of the present invention includes a first conductive line extending in a first direction and a second conductive line extending in a second direction, and the two conductive lines are insulated and arranged
  • the first conductive line includes a plurality of spaced apart first sensing electrodes and a first connecting bridge connecting adjacent two first sensing electrodes
  • the second conductive line includes a plurality of spaced apart second sensing electrodes and a second connecting bridge connecting adjacent two second sensing electrodes
  • each of the first sensing electrodes includes at least one tip facing the third direction
  • excess charge on the electrodes in the touch screen can be gathered at the tip end
  • the insulation overlaps with the second sensing electrode, so that the accumulated charge generates a current through the tip discharge and the second sensing electrode, so that the timely release of the static electricity is achieved.
  • FIG. 1 is a schematic structural view of a touch screen for releasing static electricity by adding a metal strip in the prior art
  • FIG. 2 is a schematic structural view of a first embodiment of a touch screen according to the present invention.
  • FIG. 3 is a schematic structural view of a touch unit in the first embodiment of the touch screen shown in FIG. 2;
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • FIG. 5 is a schematic structural diagram of a first embodiment of a mobile terminal according to the present invention.
  • FIG. 2 is a schematic structural diagram of a first embodiment of a touch screen according to the present invention.
  • the touch screen 100 includes a plurality of first conductive lines 11 extending along the first direction X, and a plurality of second conductive lines 12 extending along the second direction Y.
  • One of the two conductive lines is for inputting the driving signal, and the other is for receiving the detection signal, that is, the driving electrode Tx is disposed in the first conductive line 11, and the detecting electrode Rx is disposed in the second conducting line 12; or, the first conductive line 11 is The detecting electrode Rx is disposed in the middle, and the driving electrode Tx is disposed in the second wire line 12.
  • the mutual capacitance change at the intersection of the two conductive lines or the self-capacitance change of each conductive line is detected, that is, the position of the touch point is obtained by adopting self-capacitance or mutual capacitance.
  • the coordinate system is established in the first direction X and the second direction Y
  • the obtained touch point position can be represented by the coordinate system.
  • the first direction X and the second direction Y are generally defined as being perpendicular to each other. In order to make capacitance detection easier, coordinate positioning is also more convenient.
  • the first direction X and the second direction Y may also be set to be non-perpendicularly intersected.
  • FIG. 3 is a schematic structural diagram of a touch unit in the first embodiment of the touch screen shown in FIG. 2; the touch unit is a repeating structure in the touch screen.
  • the touch unit includes a plurality of first sensing electrodes 111 spaced apart in the first direction X, and a first connecting bridge 112 connecting the adjacent two first sensing electrodes 111, in the first sense
  • a tip 113 facing the third direction Z is also disposed on the measuring electrode 111 for discharging static electricity.
  • the second conductive line 12 it includes a plurality of second sensing electrodes 121 spaced apart in the second direction Y, and a second connecting bridge 122 connecting the adjacent two second sensing electrodes 121.
  • the touch screen 100 in this embodiment is a square shape.
  • the sides of the square touch screen 100 are triangular, and the others are all diamond-shaped.
  • the first connecting bridge 112 connects the two vertices of the two adjacent first sensing electrodes 111
  • the second connecting bridge 122 connects the two vertices of the adjacent two second sensing electrodes 121.
  • the tip end 113 may be a triangular shape, an elongated strip shape or other shape having a sharp upper end and a tip end, and in the present embodiment, each of the first sensing electrodes 111 is provided with four tips 113, and the four tips 113 are respectively disposed at On the four sides of the first sensing electrode 111; or two of the tips 113 are disposed on two sides of the first sensing electrode 111 and correspond to two sides of the second sensing electrode 121, and the other two tips 113 Then, it is disposed on the other two sides of the second sensing electrode 121.
  • each of the first sensing electrodes 111 may also be provided with only one or more tips 113; or at the second sensing electrode 121.
  • One or more tips 113 are provided thereon.
  • the first sensing electrode 111, the first connecting bridge 112, the second sensing electrode 121, and the second connecting bridge 122 are all of the same material, such as a transparent conductive material, ITO (conductive glass), or the like.
  • the first sensing electrode 111 may be the same material, and the tip 113 and the first sensing electrode 111 may be formed in the same mask process; or the first sensing electrode 111 may be made of a different material.
  • the tip 113 is conductively soldered on the first sensing electrode 111; for the manufacturing process of the touch screen 100, there is no limitation here, and different process flows may be adopted according to actual conditions, for example, when the tip 113 and the first sensing electrode 111 are made of materials.
  • the first sensing electrode 111, the second sensing electrode 121, and the second connecting bridge 122 may be formed in the same mask process, and then the first connecting bridge 112 and the tip end 113 are fabricated and turned on.
  • the first sensing electrode 111, the second sensing electrode 121, and the second connecting bridge 122 having a larger area are obtained in the same mask process, and the material can be fully utilized to reduce the cost.
  • the first sensing electrode 111 and the second sensing electrode 121 are staggered from each other, and the sides of the first sensing electrode 111 and the sides of the second sensing electrode 121 are parallel to each other.
  • the third direction Z pointed by the tip 113 is only used to distinguish between the first direction X and the second direction Y. It is not a specific direction, and it has a certain angle with the first direction X and the second direction Y.
  • the third direction Z shown in FIG. 3 also only indicates the direction of two of the four tips 113, while the directions of the other two tips are oppositely disposed. In this embodiment, the third direction Z is perpendicular to the side of the first sensing electrode 111.
  • the edge of the first sensing electrode 111 may not be perpendicular.
  • the length of the tip end 113 in this embodiment is greater than the distance between the first sensing electrode 111 and the second sensing electrode 121, that is, the tip end 113 overlaps the second sensing electrode 121.
  • FIG. 4 is a cross-sectional view taken along line A-A of FIG.
  • the first connecting bridge 112 and the second connecting bridge 122 are arranged to overlap each other.
  • An insulating layer 13 is disposed between the first connecting bridge 112 and the second connecting bridge 122; the tip end 113 and the second sensing electrode 121 are also insulated and overlapped.
  • the touch screen 100 is generally located on the outer surface of the device when in use, and the touch screen 100 is easy to generate friction with other objects, and then triboelectrically generated, charge is transferred, and the touch screen 100 is sensed.
  • the charge easily accumulates in its sharp portion, so that excess positive or negative charges on the first sensing electrode 111 are easily collected on the tip 113, and after gathering to a certain extent, the magnetic field near the tip 113 is enhanced, resulting in an increase in magnetic field.
  • the air in the vicinity is ionized, and then a tip discharge occurs, and a discharge current is generated between the other conductors to realize charge release. Since the tip 113 and the second sensing electrode 121 are disposed to overlap each other, the tip 113 forms a longitudinal current between the second sensing electrode 121 and the second sensing electrode 121.
  • the first sensing electrode 111 and the second sensing electrode 121 have a larger area with respect to the tip end 113, and a strong current generated by the tip discharge is also less likely to be applied to the first sensing electrode 111 or the second sensing electrode. 121 produces damage.
  • first connection bridge 112 between the two adjacent first sensing electrodes 111 is also a relatively thin portion, excess charge is also easily accumulated on the first connection bridge 112.
  • the first connecting bridge 112 does not have a sharp structure, and the accumulated electric charge is not easily released. Therefore, it is necessary to allow the electric charge on the first connecting bridge 112 to also be transferred to the tip end 113.
  • the tip end 113 is disposed at a position close to the first connecting bridge 112, that is, the distance between the tip end 113 and the first connecting bridge 112 is smaller than
  • the distance between the other vertices reaching the first sensing electrode 111 is expressed by s ⁇ d-s, where s represents the distance from the tip 113 to the first connecting bridge 112, and d represents the side of the first sensing electrode 111.
  • the first sensing electrode 111 in this embodiment is a special diamond shape, that is, a square.
  • the side length d of the first sensing electrode 111 and the second sensing electrode 121 is 3 mm to 7 mm, and the distance s of the tip 113 from the first connecting bridge 112 is 1 mm to 3 mm. In this embodiment, the side length d is 5 mm. s is 1mm.
  • d can also be 3mm, at which time s is 1mm; if the touch screen itself is large in size, d can be 7mm, s is 3mm; of course, in other embodiments, d can also be selected 2mm, s is 0.5mm; or d is 8mm, s is 3.5mm, etc., the values of d and s can be designed according to actual conditions, and no specific limitation is made here.
  • the touch screen in this embodiment includes a first conductive line extending along a first direction and a second conductive line extending along a second direction, wherein the two conductive lines are insulated and overlapped, wherein the first conductive line includes a plurality of a first sensing electrode arranged at intervals and a first connecting bridge connecting two adjacent first sensing electrodes, the second conductive line comprising a plurality of second sensing electrodes connected at intervals and connecting two adjacent second senses a second connecting bridge of the measuring electrode includes at least one tip facing the third direction on each of the first sensing electrodes, and excess charge on the electrodes in the touch screen can be gathered at the tip end, and the tip is insulated from the second sensing electrode The stacking, so that the accumulated charge generates a current through the tip discharge and the second sensing electrode, achieves a timely release of static electricity.
  • FIG. 5 is a schematic structural diagram of a first embodiment of a mobile terminal according to the present invention.
  • the embodiment provides a mobile terminal 200 including a touch screen 21, a display panel 22, and a main board 23.
  • the touch screen 21 has the same structure and function as the touch screen 100 shown in FIG. 2, and the display panel 22 is a TFT-LCD (thin film transistor liquid crystal display), and the main board 23 is used for implementing control and calculation functions, and the three are passed through the FPC flexible cable 24 . connection.
  • TFT-LCD thin film transistor liquid crystal display
  • the touch screen in the mobile terminal of the embodiment can release static electricity in time, and the touch screen on the mobile terminal is less prone to misoperation, thereby improving user experience and being more convenient to use.

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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)
  • Position Input By Displaying (AREA)

Abstract

本发明公开了一种触摸屏和移动终端，其中触摸屏包括沿第一方向延伸的第一导电线路和沿第二方向延伸的且与第一导电线路绝缘交叠设置的第二导电线路；第一导电线路包括多个间隔排列在第一方向的第一感测电极和连接相邻两第一感测电极的第一连接桥；第二导电线路包括多个间隔排列在第二方向上的第二感测电极及连接相邻两第二感测电极的第二连接桥；每一第一感测电极上均包括一朝向第三方向的尖端，该尖端与第二感测电极绝缘交叠。触摸屏中电荷聚集在尖端，通过尖端放电与第二感测电极产生电流，以实现静电的及时释放。

Description

一种触摸屏及移动终端
【技术领域】
本发明涉及一种触摸屏及移动终端。
【背景技术】
触摸屏具有反应速度快、定位准确、支持多点触控、使用寿命长等诸多优点，被广泛应用在移动终端上。为了让用户使用更舒适，触摸屏的基板尺寸增大且解析度也进一步提高，相应的在制造过程，触摸屏发生静电破坏的几率越来越高，不仅如此，在触摸屏使用过程中，触摸屏上发生的摩擦也会产生电荷，该电荷积累所形成的静电容易被误认为是触摸屏被触摸，继而产生误触发。因此，一般在触摸屏中需设置ESD（静电释放）电路，以让累积的电荷及时的由该电路安全释放。
由于触摸屏电极密度高的特点，导致在触摸屏中很难添加ESD防护器件，当前有一种解决方案是在触摸面板上添加接地的金属边条来防护，具体请参阅图1，图1是现有技术中通过添加金属边条释放静电的触摸屏的结构示意图。对于这种结构，仅在触摸屏周边一圈有静电释放作用，而无法释放触摸屏中间由于摩擦产生的电荷，依旧未完美解决静电干扰的问题。
【发明内容】
本发明提供一种触摸屏及移动终端，以解决现有技术中触摸屏的静电释放问题。
为解决上述技术问题，本发明提供一种触摸屏，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叠设置的第二导电线路，第一导电线路包括多个间隔排列在第一方向上的第一感测电极及连接相邻的两个第一感测电极的第一连接桥，第二导电线路包括多个间隔排列在第二方向上的第二感测电极及连接相邻的两个第二感测电极的第二连接桥；每一第一感测电极上均包括至少一朝向第三方向的尖端，尖端与第二感测电极绝缘交叠；从平面上看，第一感测电极与第二感测电极相互错开，第一连接桥与第二连接桥相互交叠；第一方向与第二方向互相垂直。
其中，第一感测电极与第二感测电极均为菱形，第一感测电极的边与第二感测电极的边彼此平行。
为解决上述技术问题，本发明又提供一种触摸屏，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叠设置的第二导电线路，第一导电线路包括多个间隔排列在第一方向上的第一感测电极及连接相邻的两个第一感测电极的第一连接桥，第二导电线路包括多个间隔排列在第二方向上的第二感测电极及连接相邻的两个第二感测电极的第二连接桥；每一第一感测电极上均包括至少一朝向第三方向的尖端，尖端与第二感测电极绝缘交叠。
其中，从平面上看，第一感测电极与第二感测电极相互错开，第一连接桥与第二连接桥相互交叠。
其中，第一感测电极与第二感测电极均为菱形，第一感测电极的边与第二感测电极的边彼此平行。
其中，尖端长度大于第一感测电极与第二感测电极之间的距离。
其中，触摸屏进一步包括绝缘层，第一连接桥和第二连接桥之间设置绝缘层。
其中，每一第一感测电极上包括四个尖端，四个尖端分别设置在第一感测电极的四条边上。
其中，第一连接桥连接相邻的两个第一感测电极的两顶点，尖端和与其邻接的第一连接桥二者之间的距离小于其到达第一感测电极的其他顶点之间的距离。
其中，第一感测电极和第二感测电极的边长为3mm~7mm，尖端距离第一连接桥1mm~3mm。
其中，第一方向与第二方向互相垂直。
为解决上述技术问题，本发明还提供一种移动终端，其包括触摸屏；触摸屏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叠设置的第二导电线路，第一导电线路包括多个间隔排列在第一方向上的第一感测电极及连接相邻的两个第一感测电极的第一连接桥，第二导电线路包括多个间隔排列在第二方向上的第二感测电极及连接相邻的两个第二感测电极的第二连接桥；每一第一感测电极上均包括至少一朝向第三方向的尖端，尖端与第二感测电极绝缘交叠。
其中，从平面上看，第一感测电极与第二感测电极相互错开，第一连接桥与第二连接桥相互交叠。
其中，第一感测电极与第二感测电极均为菱形，第一感测电极的边与第二感测电极的边彼此平行。
其中，尖端长度大于第一感测电极与第二感测电极之间的距离。
其中，触摸屏进一步包括绝缘层，第一连接桥和第二连接桥之间设置绝缘层。
其中，每一第一感测电极上包括四个尖端，四个尖端分别设置在第一感测电极的四条边上。
其中，第一连接桥连接相邻的两个第一感测电极的两顶点，尖端和与其邻接的第一连接桥二者之间的距离小于其到达第一感测电极的其他顶点之间的距离。
其中，第一感测电极和第二感测电极的边长为3mm~7mm，尖端距离第一连接桥1mm~3mm。
其中，第一方向与第二方向互相垂直。
本发明的有益效果是：区别于现有技术的情况，本发明中的触摸屏包括沿第一方向延伸的第一导电线路和沿第二方向延伸的第二导电线路，两导电线路绝缘交叠设置，其中第一导电线路包括多个间隔排列的第一感测电极和连接相邻两个第一感测电极的第一连接桥，第二导电线路包括多个间隔连接的第二感测电极和连接相邻两个第二感测电极的第二连接桥，在每一个第一感测电极上均包括有至少一朝向第三方向的尖端，触摸屏中电极上多余的电荷能够在尖端聚集，尖端与第二感测电极绝缘交叠，因此所聚集的电荷通过尖端放电与第二感测电极产生电流，实现静电的及时释放。
【附图说明】
图1是现有技术中通过添加金属边条释放静电的触摸屏的结构示意图；
图2是本发明一种触摸屏第一实施例的结构示意图；
图3是图2所示触摸屏第一实施例中触摸单元的结构示意图；
图4是图3中A-A方向的剖面图；
图5是本发明一种移动终端第一实施例的结构示意图。
【具体实施方式】
请参阅图2，图2是本发明一种触摸屏第一实施例的结构示意图。本实施例中触摸屏100包括多条沿第一方向X延伸的第一导电线路11，以及多条沿第二方向Y延伸的第二导电线路12。两导电线路中一个用于输入驱动信号，另一个用于接收检测信号，即第一导电线路11中设置驱动电极Tx，则第二导线线路12中设置检测电极Rx；或者，第一导电线路11中设置检测电极Rx，则第二导线线路12中设置驱动电极Tx。在进行触摸检测时，检测两导电线路交汇处的互电容变化或每个导电线路的自电容变化，即采取自电容或互电容的方式得到触摸点的位置。若以第一方向X和第二方向Y建立坐标系，则所得到的触摸点位置则可通过该坐标系表示，按常规做法，一般将第一方向X和第二方向Y定义为相互垂直，以使得电容检测更容易，坐标定位也更方便。当触摸屏100为其他形态（圆形、不规则形状或弯曲形状）时，也可将第一方向X和第二方向Y设置为非垂直交叉的。
请进一步参阅图3，图3是图2所示触摸屏第一实施例中触摸单元的结构示意图；此触摸单元为触摸屏中的重复结构。对于第一导电线路11，其包括多个在第一方向X上间隔排列的第一感测电极111，以及连接相邻两个第一感测电极111的第一连接桥112，在第一感测电极111上还设置有朝向第三方向Z的尖端113，用于释放静电。对于第二导电线路12，其包括多个在第二方向Y上间隔排列的第二感测电极121，以及连接相邻两个第二感测电极121的第二连接桥122。
本实施例中的触摸屏100为方形，第一感测电极111和第二感测电极121中，位于方形触摸屏100边上的为三角形，其他的均为菱形。第一连接桥112连接相邻两个第一感测电极111的两顶点，第二连接桥122则连接相邻两个第二感测电极121的两顶点。尖端113可以是三角形、细长条形或其他上细下粗具有尖端的形状，并且在本实施例中，每个第一感测电极111上设置四个尖端113，四个尖端113分别设置在第一感测电极111的4条边上；或者其中两个尖端113设置在第一感测电极111的两条边上且对应于第二感测电极121的两条边，另外两个尖端113则设置在第二感测电极121的另外两条边上当然，在其他实施例中，每个第一感测电极111也可仅设置一个或多个尖端113；或在第二感测电极121上设置一个或多个尖端113。
其中第一感测电极111、第一连接桥112、第二感测电极121以及第二连接桥122均为同一材料，如透明导电材料、ITO（导电玻璃）等。而对于尖端113，可以与第一感测电极111为相同材料，则尖端113与第一感测电极111在同一道掩膜制程中形成；也可与第一感测电极111为不同材料，则尖端113导通焊接在第一感测电极111上；对于触摸屏100的制作过程，在此不做限制，可根据实际情况采用不同的工艺流程，例如当尖端113与第一感测电极111材料均相同时，还可首先在同一掩膜制程中形成第一感测电极111、第二感测电极121及第二连接桥122，然后再制作第一连接桥112及尖端113，并将其导通连接于第一感测电极111上，在同一掩膜制程中得到面积较大的第一感测电极111、第二感测电极121及第二连接桥122，能够充分利用材料，减少成本。
从平面上看，第一感测电极111和第二感测电极121相互错开，第一感测电极111的边与第二感测电极121的边彼此平行。尖端113所指向的第三方向Z在此仅用以区别于第一方向X和第二方向Y，并不是特制某一个方向，其与第一方向X和第二方向Y均具有一定角度即可，且在图3中所示出的第三方向Z也仅仅表示四个尖端113中某两个的方向，而另外两个尖端的方向则相对设置。本实施例中，第三方向Z与第一感测电极111的边垂直，当然，其他实施例中也可不与第一感测电极111的边垂直。本实施例中尖端113的长度大于第一感测电极111到第二感测电极121之间的距离，即尖端113交叠于第二感测电极121的上方。
请进一步参阅图4，图4是图3中A-A方向的剖面图。第一连接桥112与第二连接桥122相互交叠设置，第一连接桥112与第二连接桥122之间设置有绝缘层13；尖端113和第二感测电极121也绝缘交叠。
对于尖端113实现静电释放的过程，具体来说，首先触摸屏100在使用时一般位于设备的外表面，触摸屏100容易与其他物体产生摩擦，继而发生摩擦起电，电荷发生转移，在触摸屏100的感测电极上产生多余的电荷，这些电荷积累所形成的静电容易被误认为是触摸屏被触摸，从而向基带芯片上误报触发数据，而产生误触发；并且在两感测电极发送接收信号的过程中，由于能量损耗、外部干扰等不稳定因素，发送和接收信号之间也会产生差异，即电位产生差异，该差异反应在电荷数量上，即会出现正负电荷不一致而产生的多余的电荷。因此，本实施例中的实现静电释放，即通过尖端113放电将电荷及时释放。
对于一个导体，电荷容易积累在其尖锐的部分，因此第一感测电极111上多余的正电荷或负电荷均容易聚集于尖端113上，聚集到一定程度后，尖端113附近的磁场增强，致使其附近的空气被电离，继而发生尖端放电，并与其他导体之间产生放电电流，实现电荷释放。由于尖端113与第二感测电极121交叠设置，因此尖端113积累电荷后与第二感测电极121之间形成纵向电流。第一感测电极111及第二感测电极121相对于尖端113具有较大的面积，尖端放电瞬间产生的强电流也不易对第一感测电极111或第二感测电极 121产生损害。
由于两相邻第一感测电极111之间的第一连接桥112也是相对较细的部分，因此多余的电荷也容易在第一连接桥112上积累。而第一连接桥112并不具有尖锐的结构，其所积累的电荷不易释放。因此需要让第一连接桥112上的电荷也能够向尖端113转移，在本实施例中，将尖端113设置在靠近第一连接桥112的位置，即尖端113与第一连接桥112的距离小于其到达第一感测电极111的其他顶点之间的距离，用公式表示即s＜d－s，其中s表示尖端113到第一连接桥112的距离，d表示第一感测电极111的边长，本实施例中第一感测电极111为特殊的菱形即正方形。
第一感测电极111和第二感测电极121的边长d为3mm~7mm，尖端113距离第一连接桥112的距离s为1mm~3mm，在本实施例中，边长d为5mm，s为1mm。若触摸屏需要更高的解析度，则d也可为3mm，此时s为1mm；若触摸屏本身尺寸较大，d可为7mm，s为3mm；当然在其他实施例中，也可选择d为2mm，s为0.5mm；或d为8mm，s为3.5mm等，可根据实际情况对d和s的值做设计，在此不作具体限制。
区别于现有技术，本实施例中的触摸屏包括沿第一方向延伸的第一导电线路和沿第二方向延伸的第二导电线路，两导电线路绝缘交叠设置，其中第一导电线路包括多个间隔排列的第一感测电极和连接相邻两个第一感测电极的第一连接桥，第二导电线路包括多个间隔连接的第二感测电极和连接相邻两个第二感测电极的第二连接桥，在每一个第一感测电极上均包括有至少一朝向第三方向的尖端，触摸屏中电极上多余的电荷能够在尖端聚集，尖端与第二感测电极绝缘交叠，因此所聚集的电荷通过尖端放电与第二感测电极产生电流，实现静电的及时释放。
请参阅图5，图5是本发明一种移动终端第一实施例的结构示意图。本实施例提供一种移动终端200，其包括触摸屏21、显示面板22以及主板23。
其中触摸屏21与图2所示触摸屏100具有相同的结构及功能，显示面板22为TFT-LCD（薄膜晶体管液晶显示屏），主板23用于实现控制及计算功能，三者通过FPC柔性排线24连接。
区别于现有技术，本实施例移动终端中的触摸屏能够及时释放静电，移动终端触摸屏上不易发生误操作，提高用户体验，使用更为便利。
以上所述仅为本发明的实施例，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. 一种触摸屏，其中，所述触摸屏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叠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相邻的两个所述第一感测电极的第一连接桥，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相邻的两个所述第二感测电极的第二连接桥；每一所述第一感测电极上均包括至少一朝向第三方向的尖端，所述尖端与所述第二感测电极绝缘交叠；
    从平面上看，所述第一感测电极与所述第二感测电极相互错开，所述第一连接桥与所述第二连接桥相互交叠；
    所述第一方向与所述第二方向互相垂直。
  2. 根据权利要求1所述的触摸屏，其中，所述第一感测电极与所述第二感测电极均为菱形，所述第一感测电极的边与所述第二感测电极的边彼此平行。
  3. 一种触摸屏，其中，所述触摸屏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叠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相邻的两个所述第一感测电极的第一连接桥，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相邻的两个所述第二感测电极的第二连接桥；每一所述第一感测电极上均包括至少一朝向第三方向的尖端，所述尖端与所述第二感测电极绝缘交叠。
  4. 根据权利要求3所述的触摸屏，其中，从平面上看，所述第一感测电极与所述第二感测电极相互错开，所述第一连接桥与所述第二连接桥相互交叠。
  5. 根据权利要求4所述的触摸屏，其中，所述第一感测电极与所述第二感测电极均为菱形，所述第一感测电极的边与所述第二感测电极的边彼此平行。
  6. 根据权利要求5所述的触摸屏，其中，所述尖端长度大于所述第一感测电极与所述第二感测电极之间的距离。
  7. 根据权利要求5所述的触摸屏，其中，所述触摸屏进一步包括绝缘层，所述第一连接桥和所述第二连接桥之间设置所述绝缘层。
  8. 根据权利要求5所述的触摸屏，其中，每一所述第一感测电极上包括四个所述尖端，四个所述尖端分别设置在所述第一感测电极的四条边上。
  9. 根据权利要求8所述的触摸屏，其中，所述第一连接桥连接相邻的两个所述第一感测电极的两顶点，所述尖端和与其邻接的所述第一连接桥二者之间的距离小于其到达所述第一感测电极的其他顶点之间的距离。
  10. 根据权利要求9所述的触摸屏，其中，所述第一感测电极和所述第二感测电极的边长为3mm~7mm，所述尖端距离所述第一连接桥1mm~3mm。
  11. 根据权利要求3所述的触摸屏，其中，所述第一方向与所述第二方向互相垂直。
  12. 一种移动终端，其中，所述移动终端包括触摸屏；所述触摸屏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叠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相邻的两个所述第一感测电极的第一连接桥，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相邻的两个所述第二感测电极的第二连接桥；每一所述第一感测电极上均包括至少一朝向第三方向的尖端，所述尖端与所述第二感测电极绝缘交叠。
  13. 根据权利要求12所述的移动终端，其中，从平面上看，所述第一感测电极与所述第二感测电极相互错开，所述第一连接桥与所述第二连接桥相互交叠。
  14. 根据权利要求13所述的移动终端，其中，所述第一感测电极与所述第二感测电极均为菱形，所述第一感测电极的边与所述第二感测电极的边彼此平行。
  15. 根据权利要求14所述的移动终端，其中，所述尖端长度大于所述第一感测电极与所述第二感测电极之间的距离。
  16. 根据权利要求14所述的移动终端，其中，所述触摸屏进一步包括绝缘层，所述第一连接桥和所述第二连接桥之间设置所述绝缘层。
  17. 根据权利要求14所述的移动终端，其中，每一所述第一感测电极上包括四个所述尖端，四个所述尖端分别设置在所述第一感测电极的四条边上。
  18. 根据权利要求17所述的移动终端，其中，所述第一连接桥连接相邻的两个所述第一感测电极的两顶点，所述尖端和与其邻接的所述第一连接桥二者之间的距离小于其到达所述第一感测电极的其他顶点之间的距离。
  19. 根据权利要求18所述的移动终端，其中，所述第一感测电极和所述第二感测电极的边长为3mm~7mm，所述尖端距离所述第一连接桥1mm~3mm。
  20. 根据权利要求12所述的移动终端，其中，所述第一方向与所述第二方向互相垂直。
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