WO2019104985A1 - 一种触控面板及触控显示装置 - Google Patents

一种触控面板及触控显示装置 Download PDF

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Publication number
WO2019104985A1
WO2019104985A1 PCT/CN2018/089972 CN2018089972W WO2019104985A1 WO 2019104985 A1 WO2019104985 A1 WO 2019104985A1 CN 2018089972 W CN2018089972 W CN 2018089972W WO 2019104985 A1 WO2019104985 A1 WO 2019104985A1
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WO
WIPO (PCT)
Prior art keywords
touch
units
touch panel
bridge
metal
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Application number
PCT/CN2018/089972
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English (en)
French (fr)
Inventor
庞雪
王冰
张田超
许�鹏
朱琨
Original Assignee
云谷（固安）科技有限公司
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Application filed by 云谷（固安）科技有限公司 filed Critical 云谷（固安）科技有限公司
Publication of WO2019104985A1 publication Critical patent/WO2019104985A1/zh
Priority to US16/533,955 priority Critical patent/US20190361546A1/en

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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
    • G06F3/044—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; 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
    • 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
    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0444—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single conductive element covering the whole sensing surface, e.g. by sensing the electrical current flowing at the corners
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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 application relates to the field of touch technologies, and in particular, to a touch panel and a touch display device.
  • the touch panel is generally used as an input device for an electronic terminal such as a mobile phone, a tablet computer, or a touch panel, and is used for receiving a touch operation command such as clicking, sliding, and the like on the touch panel.
  • the conventional touch panel often has a first direction electrode 11 and a second direction electrode 12.
  • the first direction and the second direction are perpendicular to each other and are located on the same conductive film layer.
  • the enlarged structure of the specific structure is as shown in FIG. 1b.
  • the first direction electrode and the second direction electrode are often block electrodes, and the block electrodes 111 in the first direction electrode are connected to each other, and the block electrodes 121 in the second direction electrode are spaced apart.
  • a bridge unit 13 is generally provided, and the bridge unit 13 insulates the first direction electrode 11 and the second direction electrode 12 from each other and is electrically connected to each other.
  • the bridging unit is often made of a metal material.
  • the static electricity may be released to the touch panel by the finger.
  • the bridging unit may be damaged by the static electricity.
  • the metal bridge unit is broken, causing an open circuit of the electrode, thereby causing touch failure.
  • the embodiment of the present invention provides a touch panel and a touch display device for improving the touch failure of the bridge unit of the touch panel after being damaged by static electricity.
  • a touch panel includes: a plurality of first touch electrode patterns disposed along a first direction, the first touch electrode patterns including a plurality of first touch units, and two adjacent first touches Connection unit of the control unit;
  • the second touch electrode patterns including a plurality of independent second touch units, and adjacent connections
  • At least one bridging structure of two second touch units wherein the bridging structure is provided with two bridging units, one bridging unit comprises at least two metal bridges, and a connecting portion connecting the at least two metal bridges
  • the metal bridges at the two ends of the bridge unit are respectively overlapped on the adjacent two second touch units; the other bridge unit includes only one metal bridge, and the two ends of the metal bridge are respectively overlapped Adjacent to the two second touch units.
  • the connecting portion is in insulation and overlap with the first touch electrode pattern.
  • the connecting portion is insulatively embedded in the hollow region of the first touch electrode pattern.
  • At least one metal bridge has a hollow pattern.
  • the extending direction of the hollow pattern of the at least one metal bridge is disposed along the second direction.
  • the at least one bridging unit is disposed along a preset direction, wherein an angle between the preset direction and the second direction is greater than 0° and less than 90°.
  • the bridging unit further includes: a contact portion at both ends of the metal bridge for contacting and connecting the second touch unit or the connecting portion, the contact portion having a width perpendicular to a direction in which the bridging unit extends Greater than the width of the metal bridge.
  • the adjacent two second touch units corresponding to any metal bridge respectively have a concave-convex structure at the spacing channel, and the metal bridge connects the two second touch units by the shortest distance.
  • the connecting unit of the first touch electrode pattern has a concave-convex structure adapted to the concave-convex structure of the second touch electrode pattern.
  • two bridging structures are disposed between the two adjacent second touch units, and the two bridging structures are disposed symmetrically in a center.
  • a touch display device comprising the touch panel of any of the above.
  • the technical solution provided by the present application provides at least one bridging structure between two adjacent second touch units, and two bridging units are disposed in the bridging structure, wherein one bridging unit is electrostatically injured when one of the bridging units is damaged At the same time, another bridge unit can still transmit touch signals.
  • the bridge unit in the bridge structure is broken at multiple locations, so that the bridge structure cannot transmit the touch signal between the adjacent two second touch units.
  • the other bridge structures between the two touch units can still ensure the conduction of the touch signals.
  • a bridge unit only includes a metal bridge, and the metal bridge can effectively reduce the resistance between the two adjacent second touch units.
  • the solution alleviates the static electricity of the touch panel bridge unit in the prior art.
  • the solution can ensure that the overall touch performance of the touch panel is not affected as much as possible, thereby improving the antistatic capability of the touch panel and improving the touch panel.
  • Durability at the same time, reduce the overall resistance of the second touch electrode pattern as much as possible to improve touch sensitivity.
  • 1a is a schematic structural view of a touch panel in the prior art
  • 1b is an enlarged view of a structure of a touch panel in the prior art
  • FIG. 2 is a schematic structural diagram of a touch panel provided by the present application.
  • connection portion 3a is a partial enlarged view of the connection portion of the connection portion and the first touch pattern in the present application
  • FIG. 3b is a partial enlarged view of the connection portion and the first touch pattern in the present application.
  • Figure 3c is a cross-sectional structural view of the joint portion in the present application.
  • FIG. 4 is a second schematic structural diagram of a touch panel provided by the present application.
  • Figure 5a is a metal bridge in which a hollow pattern is disposed along a second direction
  • Figure 5b is a metal bridge of the present application, which is provided with a hollow pattern perpendicular to the second direction;
  • Figure 5c is a metal bridge having a mesh hollow pattern
  • FIG. 6a is a third schematic structural diagram of a touch panel provided by the present application.
  • 6b is a schematic view of a metal bridge of a touch panel in the prior art
  • 6c is a schematic view of a metal bridge of a touch panel in the present application.
  • FIG. 7 is a fourth schematic structural diagram of a touch panel provided by the present application.
  • FIG. 8 is a schematic structural diagram of a touch panel provided by the present application.
  • 9a is a schematic structural diagram of a touch panel provided by the present application.
  • FIG. 9b is a seventh schematic structural diagram of a touch panel provided by the present application.
  • the embodiment provides a touch panel for reducing the problem of touch failure after the touch panel bridge unit is damaged by static electricity.
  • the structure of the touch panel is as shown in FIG. 2, including:
  • first touch electrode patterns disposed in the first direction, the first touch electrode patterns including a plurality of first touch units 21, and a connection unit connecting the adjacent two first touch units 21;
  • a plurality of second touch electrode patterns disposed along the second direction and insulated from the first touch electrode patterns, the second touch electrode patterns including a plurality of independent second touch units 22, and a connection phase
  • At least one bridging structure 23 of two adjacent second touch units wherein the bridging structure 23 is provided with two bridging units, one bridging unit includes at least two metal bridges 232a, 232b, and the at least two a metal bridge connection portion 231, wherein the metal bridges 232a, 232b at the two ends of the bridge unit are respectively overlapped on the adjacent two second touch units 22; the other bridge unit only includes a metal bridge 234. The two ends of the metal bridge are respectively overlapped on the two adjacent second touch units 22 .
  • a bridge structure 23 is taken as an example between two adjacent second touch units, but a plurality of bridge structures 23 may be disposed between the two touch units, and the specific bridge structure 23 is provided.
  • the quantity and size are not limited here and can be adjusted according to production requirements.
  • the metal wires 232a and 232b may be broken when receiving a static current with a large current, according to the structure of FIG.
  • the metal bridge 234 can still ensure the normal conduction of the touch signal between the adjacent two second touch units 22.
  • a bridge unit only includes a metal bridge 234, which can effectively reduce the resistance between the adjacent two second touch units 22, and improve the overall touch sensitivity of the touch panel.
  • the touch panel structure provided by the solution can improve the antistatic capability of the touch panel, and the touch signal can still be transmitted between the two second touch units when subjected to an electrostatic damage, thereby reducing The effect of electrostatic damage on the touch performance improves the durability of the touch panel. At the same time, the overall resistance of the second touch electrode pattern is reduced as much as possible to improve the touch sensitivity.
  • FIG. 3a is a partial enlarged view of the bridge structure 23 between two adjacent second touch units.
  • a bridge unit includes a connecting portion 231 and two metal bridges 232a and 232b.
  • the connecting portion 231 is located in a hollow region of the first touch electrode pattern, and the connecting portion 231 is spaced apart from the first touch electrode pattern.
  • the two metal bridges 232a and 232b are overlapped between the second touch unit 22 and the connecting portion 231 to electrically connect the adjacent two second touch units 22.
  • the other bridge unit includes a metal bridge 234 that is overlapped between two adjacent second touch units 22 .
  • the touch signals can still be transmitted between the two second touch units 22, thereby reducing the impact of electrostatic damage on the touch performance and improving the touch.
  • the panel is antistatic and improves durability.
  • the above structure can shorten the length of the metal bridges 232a and 232b between the adjacent two second touch units 22 under the premise of ensuring the normal connection of the touch signals, and alleviate the adjacent two second touch units to some extent.
  • the reflection of the metal bridge between 22 is too long.
  • a bridge unit includes a connecting portion 231 and two metal bridges 232a, 232b, wherein the connecting portion 231 is overlapped with the first touch electrode pattern and insulated from each other, and the two metal bridges 232a, 232b overlap the second touch. Between the control unit 22 and the connecting portion 231, the adjacent two second touch units 22 are turned on.
  • the other bridge unit includes a metal bridge 234 that is overlapped between two adjacent second touch units.
  • the cross-sectional view taken along the dashed line in Fig. 3b is shown in Fig. 3c.
  • an insulating layer 233 is interposed between the connecting portion 231 and the first touch electrode pattern, and the insulating layer 233 can ensure that the first touch electrode pattern and the second touch electrode pattern are insulated from each other to avoid short circuit or Signal crosstalk.
  • the touch signals can still be transmitted between the two second touch units 22, thereby reducing the influence of the electrostatic damage on the touch performance and improving the antistatic capability of the touch panel.
  • the structure can shorten the length of the metal bridge between the adjacent two second touch units, and avoid the reflection phenomenon caused by the excessive length of the metal bridge.
  • At least one metal bridge of the bridge structure has a hollow pattern.
  • the specific structure is as shown in FIG. 4.
  • a bridge structure 23 is disposed between two adjacent second touch units 22.
  • one bridge unit includes two metal bridges 232a and 232b.
  • the portion 231 is connected to the adjacent two second touch units 22, and the other bridge unit includes a metal bridge 234 that is overlapped between the adjacent two second touch units 22.
  • a metal bridge has a hollow pattern as an example.
  • the left metal bridge 232a has a rectangular hollow pattern, and the hollow pattern forms two transmission touches on a metal bridge 232a for transmitting touch signals.
  • the metal bridge 232b on the right side and the metal bridge 234 on the lower side in Fig. 4 may be provided with the above structure.
  • the structure provided by the present solution enables a bridging unit to transmit signals between two adjacent second touch units 22 in the event of a breakage by electrostatic shock, further reducing electrostatic damage.
  • the impact on touch performance improves the antistatic ability of the touch panel, thereby improving durability.
  • the extending direction of the hollow pattern of the at least one metal bridge is disposed along the second direction.
  • the metal bridge can be the metal bridge 234 in FIG. 4, and FIG. 5a shows a schematic structural view of the metal bridge having a hollow pattern.
  • the specific hollow pattern can be a rectangle, a circle or other graphics, and the hollow pattern is specifically The quantity depends on the actual production requirements.
  • FIG. 5a shows a hollow pattern arranged along the second direction. In the figure, three rectangular patterns are taken as an example.
  • the touch signal can be transmitted along multiple routes, and any position in the metal bridge is subjected to electrostatic shock. When injured, the metal bridge can still ensure the normal signal transmission between two adjacent two second touch electrodes. It can be seen that the metal bridge structure shown in FIG. 5a can improve the touch failure of the touch panel after being damaged by static electricity.
  • the plurality of hollow patterns may also be disposed perpendicular to the second direction.
  • the specific structure is as shown in FIG. 5b, and the hollow pattern may specifically be two rectangular patterns.
  • the two rectangular patterns on the metal bridge perpendicular to the second direction divide the metal bridge into upper, middle and lower channels for transmitting touch signals.
  • the metal If the bridge is damaged by static electricity, the transmission channel may be broken. If the first transmission channel located above is damaged by static electricity, the two transmission channels located in the middle and below may still be adjacent to the two second touch electrodes. Electrical signals are transmitted between. Therefore, the metal bridge provided by the solution can still ensure the transmission of the touch signal on the touch panel after being damaged by a certain degree of static electricity, thereby improving the antistatic capability of the touch panel and alleviating the electrostatic damage of the touch panel. After the touch fails.
  • the touch signal when the touch signal is transmitted through the metal bridge having the grid shape, the touch signal has a plurality of transmission paths, and the touch signal can be transmitted along any one of the transmission paths.
  • the grid-like metal bridge is damaged by static electricity, the impact is broken, but the grid that has not been broken by the impact can continue to transmit signals. Therefore, the structure provided by the present application can improve the anti-static damage of the touch panel and improve the touch failure of the touch panel after being damaged by static electricity.
  • the present invention further provides a touch panel, wherein the at least one bridging unit is disposed along a preset direction, wherein an angle between the preset direction and the second direction is greater than 0° and less than 90°. .
  • FIG. 6a The specific structure is shown in FIG. 6a.
  • a bridge structure is taken as an example.
  • one bridge unit includes only one metal bridge 234, and the angle between the direction of the metal bridge 234 and the second direction is greater than 0° and less than 90°.
  • bending deformation occurs correspondingly when subjected to an external force.
  • FIG. 6b a partial enlarged view of the metal bridge is shown in FIG. 6b.
  • the bending line of the metal bridge is shown by a thick line in the figure.
  • the width of the metal bridge is a.
  • the length of the bending line of the dispersion stress on the bridging unit when bending is the same as the width of the metal bridge, that is, the bending stress can be dispersed on the bending line.
  • the bending line of the metal bridge is shown by a broken line in the figure.
  • the width of the metal bridge is a
  • the length of the bending line on the metal bridge when the bending is bent is b.
  • b is larger than a, that is, the stress is more dispersed in the structure of the present scheme than in the prior art.
  • the present scheme has a longer bending line than the prior art, that is, the stress can be more uniformly dispersed, and the structure of the solution can be more uniform for the same size of bending force.
  • the ground disperses the stress, and the bending stress is dispersed at various positions of the metal bridge, so that the metal bridge located on the bending line receives less stress everywhere. Therefore, the metal bridge is broken when the bending stress is applied, thereby ensuring that the touch panel can normally transmit the touch signal and enhance the durability of the touch panel.
  • the present embodiment further provides another touch panel structure.
  • the bridge unit further includes: at two ends of the metal bridge for contacting and connecting the second touch unit 22 or the connection portion.
  • the contact portion P of the 231, the width of the contact portion P in a direction perpendicular to the extending direction of the bridge unit is larger than the width of the metal bridge.
  • the specific structure is as shown in FIG. 7.
  • the contact surface of the metal bridge and the second touch unit 22 is large, and the contact resistance is inversely proportional to the contact area, and the large contact area can effectively reduce the metal bridge.
  • Contact resistance with the second touch unit 22 In the second touch electrode pattern of the touch panel, if the contact surface of each of the metal bridge and the second touch unit 22 has the structure of the embodiment, the overall resistance of the display panel can be effectively reduced, and the overall touch panel can be improved. Sensitivity.
  • a plurality of bridging structures may be disposed between two adjacent second touch units 22, and preferably, two bridging structures may be disposed, as shown in FIG.
  • Two bridging structures 23 are disposed between the adjacent second touch units 22, and the two bridging structures are symmetrically disposed along the center, and are also symmetrically disposed along the second direction.
  • the other bridge units can still ensure the two second touches. Signals are communicated between units 22. It can be seen that the structure can further improve the anti-static damage capability of the touch panel, relieve the problem of the touch panel failure after the electrostatic damage, and prolong the service life of the touch panel.
  • the present disclosure further provides a touch panel.
  • the adjacent two second touch units 22 corresponding to any of the bridge units 23 respectively have a concave-convex structure 22a at the spacing channel.
  • the bridge unit connects the two second touch units 22 by the shortest distance.
  • the second touch unit 22 has a concave-convex structure which is triangular, as shown in the curved frame indicated by 22a in FIG. 9a.
  • the relief structure can also be rectangular, as shown by the dashed box indicated by 22a in Figure 9b.
  • the uneven structure may be other patterns such as a trapezoid, a semicircle, or the like.
  • the second touch unit 22 since the second touch unit 22 has a concave-convex structure, and the bridge unit communicates between the adjacent two second touch units 22 by the shortest distance, the length of the bridge unit is short. Since the metal bridge in the bridge unit is usually made of a metal material, the touch panel is often laminated with the display panel in the electronic device.
  • the shortening of the length of the metal bridge unit 23 can avoid the occurrence of metal reflection on the touch panel as much as possible. Avoid affecting display performance.
  • shorter metal bridges are less prone to breakage than longer metal bridges. Therefore, shortening the length of the metal bridge can further improve the overall durability of the touch panel. Especially for the flexible touch panel, the shorter metal bridge can further improve the resistance of the touch panel to bending.
  • the present disclosure further provides a touch panel.
  • the connecting unit of the first touch electrode pattern has a matching structure with the concave and convex structure 22a of the second touch electrode pattern.
  • the connecting unit in the first touch electrode pattern in FIG. 9a and FIG. 9b is used to turn on the touch signal between the adjacent two touch units 22, and when the second touch electrode pattern has the uneven structure 22a, To ensure the conduction of the touch signals between the two adjacent second touch units 22, the width of the transmission touch signal is prevented from being too narrow.
  • the connecting unit of the first touch electrode pattern has a shape adapted to the second touch unit concave and convex structure 22a, thereby effectively preventing the channel for transmitting the touch signal from being too narrow, reducing the overall resistance of the touch panel, and improving the overall Touch panel touch sensitivity.
  • a touch display device includes any one of the touch panels involved in the above embodiments.
  • the touch display device can be applied to an electronic device having a touch display function.
  • the touch display device provided in the embodiment can reduce the problem of touch failure after the touch panel bridge unit is damaged by static electricity, and the touch display device is improved. The overall anti-static ability, extending the life of the device.
  • the display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a smart wearable device, and the like.
  • a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a smart wearable device, and the like.
  • Other indispensable components of the display device are understood by those skilled in the art, and are not described herein, nor should they be construed as limiting the application.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
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Abstract

本申请涉及触控技术领域，尤其涉及一种触控面板及触控显示装置，用以提高抗静电能力。该触控面板包括：多条第一触控电极图案，由多个第一触控单元和连接相邻两个第一触控单元的连接单元构成；多条与第一触控电极图案绝缘交叉的第二触控电极图案，其中包括多个独立的第二触控单元，以及连接相邻两个第二触控单元的至少一个桥接结构，桥接结构中有两个桥接单元，其一包含至少两个金属桥和连通金属桥的连接部，桥接单元中两端的金属桥分别搭接在相邻两个第二触控单元上；另一个桥接单元仅包含一个金属桥，金属桥的两端分别搭接在相邻两个第二触控单元上。该方案减少了桥接单元受静电击伤的情况，从而提高触控面板抗静电能力，提高显示面板的耐用性。

Description

一种触控面板及触控显示装置
交互参考
本申请要求以下优先权：2017年11月30日提出的申请号：201721642835.2，名称:“一种触控面板及触控显示装置”的中国专利，本申请参考引用了如上所述申请的全部内容。
技术领域
本申请涉及触控技术领域，尤其涉及一种触控面板和触控显示装置。
背景技术
在现有技术中，触控面板作为一种输入设备普遍应用于手机、平板电脑、触摸板等电子终端，用于接收用户对触控面板的点击、滑动等触控操作指令。
现有的触控面板往往具有第一方向电极11和第二方向电极12，如图1a所示，所述第一方向与第二方向相互垂直，位于同一导电膜层上。具体结构放大图如图1b所示，第一方向电极和第二方向电极往往为块状电极，第一方向电极中的块状电极111相连设置，第二方向电极中的块状电极121间隔设置，且第二方向电极中相邻的块状电极121之间，通常设置有桥接单元13，该桥接单元13使第一方向电极11和第二方向电极12相互绝缘且各自导通。
在现有的触控面板中，该桥接单元往往为金属材质，由于用户对触控面板进行操作时，有可能通过手指向触控面板释放静电，在静电的作用下桥接单元有可能出现损伤，导致金属桥接单元断裂，使得电极出现断路，从而引发触控失效。
发明内容
本申请实施例提供一种触控面板及触控显示装置，用以改善触控面板的桥接单元受静电击伤后触控失效的问题。
本申请实施例采用下述技术方案：
一种触控面板，包括：多条沿第一方向设置的第一触控电极图案，所述第一触控电极图案包括多个第一触控单元，以及连接相邻的两个第一触控单元的连接单元；
多条沿第二方向设置且与所述第一触控电极图案绝缘交叉的第二触控电极图案，所述第二触控电极图案包括多个独立的第二触控单元，以及连接相邻的两个第二触控单元的至少一个桥接结构，其中，所述桥接结构中设置有两个桥接单元，一个桥接单元包含至少两个金属桥，以及连通所述至少两个金属桥的连接部，所述桥接单元中位于两端的金属桥分别搭接在相邻的两个第二触控单元上；另一个桥接单元仅包含一个金属桥，所述金属桥的两端分别搭接在所述相邻的两个第二触控单元上。
优选的，所述连接部与所述第一触控电极图案绝缘交叠设置。
优选的，所述连接部绝缘嵌设在所述第一触控电极图案的镂空区域内。
优选的，所述桥接结构中，至少一个金属桥具有镂空图案。
优选的，所述至少一个金属桥的镂空图案的延伸方向沿所述第二方向设置。
优选的，所述至少一个桥接单元沿预设方向设置，其中，所述预设方向与所述第二方向的夹角大于0°且小于90°。
优选的，所述桥接单元还包括：位于金属桥的两端且用于接触连接所述第二触控单元或连接部的接触部，所述接触部沿垂直于所述桥接单元延伸方向的宽度大于所述金属桥的宽度。
优选的，任一金属桥所对应的相邻的两个第二触控单元在间隔通道处分别具有凹凸结构，金属桥通过最短距离连接所述两个第二触控单元。
优选的，所述第一触控电极图案的连接单元具有与所述第二触控电极图案的凹凸结构相适配的凹凸结构。
优选的，所述相邻的两个第二触控单元之间设置有两个桥接结构，所述两个桥接结构呈中心对称设置。
一种触控显示装置，包括上述任意一项所述的触控面板。
本申请实施例采用的上述至少一个技术方案能够达到以下有益效果：
本申请提供的技术方案通过在相邻的两个第二触控单元之间设置至少一个桥接结构，且桥接结构中设置有两个桥接单元，其中一个桥接单元当其中一个桥接单元受到静电击伤时，另一个桥接单元依然可以传导触控信号。另外，即便该桥接结构受到多次静电击伤，桥接结构中的桥接单元多处断裂，导致该桥接结构无法在相邻的两个第二触控单元之间传导触控信号，这两个第二触控单元之间其他的桥接结构依然可以保证触控信号的导通。而且，本方案中一个桥接单元仅包含金属桥，该金属桥能有效降低相邻两个第二触控单元之间的电阻，因此，本方案缓解了现有技术中触控面板桥接单元受静电击伤后触控失效的情况，在受到多次静电击伤时，本方案能够尽可能保证触控面板整体的触控性能不受影响，从而提高触控面板的抗静电能力，提高触控面板的耐用性，同时，尽可能减小第二触控电极图案整体电阻，提高触控灵敏度。
附图说明
在附图中：
图1a为现有技术中一种触控面板结构示意图；
图1b为现有技术中一种触控面板结构放大图；
图2为本申请提供的一种触控面板结构示意图之一；
图3a为本申请中连接部与第一触控图案间隔设置的局部放大图；
图3b为本申请中连接部与第一触控图案交叠设置的局部放大图；
图3c为本申请中连接部处的剖面结构图；
图4为本申请提供的一种触控面板结构示意图之二；
图5a为本申请一种沿第二方向设置镂空图案的金属桥；
图5b为本申请一种垂直于第二方向设置镂空图案的金属桥；
图5c为本申请一种具有网状镂空图案的金属桥；
图6a为本申请提供的一种触控面板结构示意图之三；
图6b为现有技术中触控面板金属桥示意图；
图6c为本申请中触控面板金属桥示意图；
图7为本申请提供的一种触控面板结构示意图之四；
图8为本申请提供的一种触控面板结构示意图之五；
图9a为本申请提供的一种触控面板结构示意图之六；
图9b为本申请提供的一种触控面板结构示意图之七。
具体实施方式
下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。
实施例一
本实施例提供一种触控面板，用以减少触控面板桥接单元受静电击伤后触控失效的问题。该触控面板结构示意图如图2所示，包括：
多条沿第一方向设置的第一触控电极图案，所述第一触控电极图案包括多个第一触控单元21，以及连接相邻的两个第一触控单元21的连接单元；
多条沿第二方向设置且与所述第一触控电极图案绝缘交叉的第二触控电极图案，所述第二触控电极图案包括多个独立的第二触控单元22，以及连接相邻的两个第二触控单元的至少一个桥接结构23，其中，所述桥接结构23中设置有两个桥接单元，一个桥接单元包含至少两个金属桥232a、232b，以及连通所述至少两个金属桥的连接部231，所述桥接单元中位于两端的金属桥232a、232b分别搭接在相邻的两个第二触控单元22上；另一个桥接单元仅包含一个金属桥234，所述金属桥的两端分别搭接在所述相邻的两个第二触控单元22上。
本实施例中，在两个相邻的第二触控单元之间，以一个桥接结构23为例， 但在两个触控单元之间可以设置有多个桥接结构23，具体的桥接结构23的数量及尺寸此处不做限定，可以根据生产需求进行调整。在本实施例提供的触控面板结构中，由于桥接结构中设置有两个桥接单元，在接收瞬间电流较大的静电时，金属线232a、232b有可能出现断裂，基于图2的结构，倘若金属桥232a受静电击伤出现断裂，无法导通信号时，金属桥234依然可以保证相邻两个第二触控单元22之间触控信号传导正常。同理，倘若金属线234受到静电击伤出现断裂，两条金属线232a、232b以及连接部231依然可以保证相邻两个第二触控单元之间触控信号传导正常。而且，本方案中一个桥接单元仅包含金属桥234，该金属桥234能有效降低相邻两个第二触控单元22之间的电阻，提高触控面板整体触控灵敏度。
由此可见，本方案提供的触控面板结构能够提高触控面板抗静电的能力，在受到一次静电击伤时，两个第二触控单元之间依然能够传输触控信号，由此，降低静电击伤对触控性能的影响，提高触控面板的耐用性，同时，尽可能减小第二触控电极图案整体电阻，提高触控灵敏度。
实施例二
基于上述实施例，本实施例提供一种触控面板，所述连接部绝缘嵌设在所述第一触控电极图案的镂空区域内。具体结构参见图3a，图3a为两个相邻第二触控单元之间桥接结构23的局部放大图。在图中一个桥接单元包括连接部231和两个金属桥232a、232b，其中，连接部231位于第一触控电极图案的镂空区域内，该连接部231与第一触控电极图案间隔绝缘，两金属桥232a、232b搭接在第二触控单元22和连接部231之间，使相邻的两个第二触控单元22导通。另一个桥接单元包括金属桥234，金属桥234搭接在相邻两个第二触控单元22之间。在这种结构下，当触控面板受到静电击伤时，两个第二触控单元22之间依然能够传输触控信号，由此，降低静电击伤对触控性能的影响，提高触控面板抗静电能力，从而提高耐用性。
另外，上述结构能够在保证触控信号连通正常的前提下，缩短相邻两个第二触控单元22之间金属桥232a、232b的长度，一定程度上缓解相邻两个第二触控单元22之间金属桥过长导致的反光现象。
另外，本方案还提供另一种触控面板，所述连接部与所述第一触控电极图案绝缘交叠设置。该连接部局部放大图如图3b所示。在图中一个桥接单元包括连接部231和两个金属桥232a、232b，其中，连接部231与第一触控电极图案交叠设置且相互绝缘，两金属桥232a、232b搭接在第二触控单元22和连接部231之间，使相邻的两个第二触控单元22导通。另一个桥接单元包括金属桥234，金属桥234搭接在相邻两个第二触控单元之间。较优的，沿图3b中虚线处剖切得到的剖面图如图3c所示。在图3c中，连接部231与第一触控电极图案之间夹设有绝缘层233，该绝缘层233能够保证第一触控电极图案与第二触控电极图案相互绝缘，避免出现短路或信号串扰的情况。而且，当触控面板受到静电击伤时，两个第二触控单元22之间依然能够传输触控信号，由此，降低静电击伤对触控性能的影响，提高触控面板抗静电能力，从而提高耐用性。另外，本结构能够缩短相邻两个第二触控单元之间的金属桥的长度，避免金属桥过长导致的反光现象。
基于以上结构，为进一步提高触控面板的抗静电能力，所述桥接结构中，至少一个金属桥具有镂空图案。具体结构如图4所示，图中两个相邻的第二触控单元22之间设置有一个桥接结构23，在桥接结构23中，一个桥接单元包括两个金属桥232a、232b，通过连接部231连通相邻两个第二触控单元22，另一个桥接单元包括一个金属桥234，搭接在相邻两个第二触控单元22之间。图中以一个金属桥具有镂空图案为例，具体在图中三个金属桥中，左侧金属桥232a具有矩形镂空图案，该镂空图案在一个传输触控信号的金属桥232a形成两条传输触控信号的通道，当受到静电击伤时，两条传输触控信号的通道中，有可能有一条受到静电击伤出现断裂，此时，另一条传输触控信号的通道依然可以继续进行信号传导。同理，图4中右侧的金属桥232b以及下侧 的金属桥234均可以设置有上述结构。
对于一个桥接单元，本方案提供的结构能够使一个桥接单元在受到静电击伤出现断裂的情况下，依然能够在两个相邻的第二触控单元22之间传输信号，进一步降低静电击伤对触控性能的影响，提高触控面板抗静电能力，从而提高耐用性。
在上述结构中，所述至少一个金属桥的镂空图案的延伸方向沿所述第二方向设置。以一个金属桥为例，该金属桥可以为图4中金属桥234，图5a示出该金属桥中具有镂空图案的结构示意图，具体镂空图案可以为矩形、圆形或其他图形，具体镂空图案的数量根据实际生产要求而定。图5a中示出沿第二方向设置的镂空图案，图中以三个矩形图案为例，在这种结构下，触控信号可以沿多条路线传输，当金属桥中任意一个位置受到静电击伤时，金属桥依然可以保证两相邻两个第二触控电极之间信号传输正常。由此可见，图5a中示出的金属桥结构能改善触控面板受静电击伤后触控失效的问题。
另外，上述多个镂空图案也可以垂直于第二方向设置，具体结构如图5b中所示，该镂空图案具体可以为两个矩形图案。金属桥上垂直于第二方向设置的两个矩形图案将金属桥划分为上、中、下三个传输触控信号的通道，当用户在触控操作过程中向触控面板释放静电时，金属桥有可能被静电击伤出现传输通道断裂的情况，假如位于上方的第一条传输通道受到静电击伤，则位于中和下方的两条传输通道依然可以在相邻两个第二触控电极之间传输电信号。因此，本方案提供的金属桥在受到一定程度的静电击伤后，依然可以保证触控面板上的触控信号传输，由此提高触控面板的抗静电能力，缓解触控面板受到静电击伤后触控失效的情况。
对于触控图案，较优的，参见图5c，通过具有网格状的金属桥传输触控信号时，该触控信号的传输通路有很多种，触控信号可以沿任意一种传输通路传导。当网格状的金属桥受到静电击伤时，击伤处形成断裂，但未被击伤断裂的网格依然可以继续传输信号。由此，本申请提供的结构能够提高触控 面板抗静电击伤的能力，改善触控面板受静电击伤后触控失效的问题。
基于上述实施例，本方案还提供一种触控面板，所述至少一个桥接单元沿预设方向设置，其中，所述预设方向与所述第二方向的夹角大于0°且小于90°。具体结构如图6a所示，图中以一个桥接结构为例，在桥接结构中，一个桥接单元仅包括一个金属桥234，该金属桥234设置方向与第二方向的夹角大于0°且小于90°。对于触控面板，在受到外力时会相应发生弯曲形变，对于现有的触控面板结构，金属桥的局部放大图如图6b所示。假如触控面板受外力后，沿虚线处弯折，金属桥的弯折线在图中以粗线示出。且金属桥的宽度为a，对于现有的结构而言，弯折时桥接单元上分散应力的弯折线长度与金属桥的宽度相同，即弯折应力能够在弯折线上分散。
对于本方案提供的触控面板结构，假如沿虚线处弯折，金属桥的弯折线在图中以虚线示出。且金属桥的宽度为a，弯折时金属桥上分散应力的弯折线长度为b，由图可知，b大于a，即本方案结构中相比于现有技术而言应力更为分散。对于相同的金属桥沿同样位置弯折，本方案与现有技术相比分散应力的弯折线更长，即应力能够分散的更加均匀，对于同样大小的弯折力，本方案的结构能够更加均匀地分散应力，弯折应力分散在金属桥的各个位置，使位于弯折线上的金属桥每处受到的应力更少。从而在受到弯折应力时减少金属桥断裂的情况，从而保证触控面板能够正常传导触控信号，增强触控面板的耐用性。
另外，本实施例还提供另一种触控面板结构，如图7所示，所述桥接单元还包括：位于金属桥的两端且用于接触连接所述第二触控单元22或连接部231的接触部P，所述接触部P沿垂直于所述桥接单元延伸方向的宽度大于所述金属桥的宽度。
具体结构如图7所示，在这种结构下，金属桥与所述第二触控单元22的接触面较大，由于接触电阻与接触面积呈反比，较大的接触面积能够有效降低金属桥与第二触控单元22之间的接触电阻。在触控面板的第二触控电极 图案中，若每个金属桥与第二触控单元22的接触面都具有本实施例的结构，则能有效降低显示面板整体电阻，提升触控面板整体灵敏度。
另外，本实施例中两个相邻的第二触控单元22之间可以设置有多个桥接结构，较优的，可以设置有两个桥接结构，如图8所示，在图中，两个相邻的第二触控单元22之间设置有两个桥接结构23，两个桥接结构沿中心对称设置，同时，也沿第二方向对称设置。在这种结构下，上述两个第二触控单元22之间有四条桥接单元用于传输信号，当其中一条金属线受静电击伤时，其他桥接单元依然可以保证这两个第二触控单元22之间信号连通。由此可见，本结构能够进一步提升触控面板抗静电击伤的能力，缓解受静电击伤后触控面板触控失效的问题，进而延长触控面板的使用寿命。
基于上述实施例提供的结构，本方案还提供一种触控面板，参见图9a，任一桥接单元23所对应的相邻的两个第二触控单元22在间隔通道处分别具有凹凸结构22a，桥接单元通过最短距离连接所述两个第二触控单元22。
在图9a中，第二触控单元22具有的凹凸结构为三角形，具体如图9a中22a所指的曲线框中所示。同理，该凹凸结构也可以为矩形，如图9b中22a所指的虚线框中所示。另外，该凹凸结构也可以是其他图形，如梯形、半圆形等。在上述结构中，由于第二触控单元22具有凹凸结构，且桥接单元通过最短的距离连通于相邻两个第二触控单元22之间，使得桥接单元的长度较短。由于桥接单元中金属桥通常采用金属材料，在电子设备中触控面板往往与显示面板叠层设置，本方案缩短金属桥接单元23的长度能够尽可能避免触控面板上出现金属反光的情况，从而避免对显示性能造成影响。另外，较短的金属桥相对于较长的金属桥更不容易出现断裂的现象。所以，缩短金属桥的长度能进一步提高触控面板整体耐用性，尤其对于柔性触控面板而言，较短的金属桥能够进一步提高触控面板耐弯折的能力。
基于上述实施例提供的结构，本方案还提供一种触控面板，参见图9a，所述第一触控电极图案的连接单元具有与所述第二触控电极图案的凹凸结构 22a相适配的凹凸结构21a。
图9a和图9b中第一触控电极图案中的连接单元用于在相邻两个第二触控单元22之间导通触控信号，当第二触控电极图案具有凹凸结构22a时，为保证相邻两个第二触控单元22之间触控信号的导通，避免传输触控信号的宽度过窄。本方案中第一触控电极图案的连接单元具有与第二触控单元凹凸结构22a相适配的形状，有效避免传输触控信号的通道过窄，减小触控面板的整体电阻，提高整体触控面板触控灵敏度。
实施例三
一种触控显示装置，包括上述实施例中所涉及的任意一种触控面板。该触控显示装置可以应用于具有触控显示功能的电子设备中，本实施例提供的触控显示装置能够减少触控面板桥接单元受静电击伤后触控失效的问题，提升触控显示装置整体抗静电能力，延长装置的使用寿命。
此外，该显示装置可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪、智能穿戴设备等任何具有显示功能的产品或部件。对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本申请的限制。
以上仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (18)

  1. 一种触控面板，包括：
    多条沿第一方向设置的第一触控电极图案，所述第一触控电极图案包括多个第一触控单元，以及连接相邻的两个第一触控单元的连接单元；
    多条沿第二方向设置且与所述第一触控电极图案绝缘交叉的第二触控电极图案，所述第二触控电极图案包括多个独立的第二触控单元，以及连接相邻的两个第二触控单元的至少一个桥接结构，其中，所述桥接结构中设置有两个桥接单元，所述两个桥接单元中的一个桥接单元包括至少两个金属桥，以及连通所述至少两个金属桥的连接部，所述一个桥接单元中的金属桥分别搭接在相邻的两个第二触控单元上；另一个桥接单元仅包含一个金属桥，所述另一个桥接单元的金属桥的两端分别搭接在所述相邻的两个第二触控单元上。
  2. 如权利要求1所述的触控面板，其中，所述连接部与所述第一触控电极图案绝缘交叠设置。
  3. 如权利要求1所述的触控面板，其中，所述连接部与所述第一触控电极图案之间夹设有绝缘层。
  4. 如权利要求1所述的触控面板，其中，所述连接部绝缘嵌设在所述第一触控电极图案的镂空区域内。
  5. 如权利要求1-4中任一项所述的触控面板，其中，所述桥接结构中，至少一个金属桥具有镂空图案。
  6. 如权利要求5所述的触控面板，其中，所述两个桥接单元的金属桥的镂空图案为矩形或圆形。
  7. 如权利要求5所述的触控面板，其中，所述至少一个金属桥的镂空图案的延伸方向沿所述第二方向设置。
  8. 如权利要求5所述的触控面板，其中，所述镂空图案垂直于所述第二方向设置。
  9. 如权利要求8所述的触控面板，其中，所述镂空图案为两个矩形图案。
  10. 如权利要求1所述的触控面板，其中，所述两个桥接单元的金属桥为网格状金属桥。
  11. 如权利要求1所述的触控面板，其中，所述至少一个桥接单元沿预设方向设置，其中，所述预设方向与所述第二方向的夹角大于0°且小于90°。
  12. 如权利要求1所述的触控面板，其中，所述两个桥接单元还包括：位于金属桥的两端且用于接触连接所述第二触控单元或连接部的接触部，所述接触部沿垂直于所述桥接单元延伸方向的宽度大于所述金属桥的宽度。
  13. 如权利要求1所述的触控面板，其中，所述相邻的两个第二触控单元之间设置有多个所述桥接结构。
  14. 如权利要求13所述的触控面板，其中，所述相邻的两个第二触控单元之间设置有两个所述桥接结构，所述两个桥接结构呈中心对称设置。
  15. 如权利要求1所述的触控面板，其中，任一金属桥所对应的相邻的两个第二触控单元在间隔通道处分别具有凹凸结构，金属桥通过最短距离连接所述相邻的两个第二触控单元。
  16. 如权利要求15所述的触控面板，其中，所述凹凸结构为三角形或矩形或梯形或半圆形。
  17. 如权利要求15或16所述的触控面板，其中，所述第一触控电极图案的连接单元具有与所述第二触控电极图案的凹凸结构相适配的凹凸结构。
  18. 一种触控显示装置，包括权利要求1-17中任意一项所述的触控面板。
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