WO2019104976A1 - 一种触控面板和触控显示装置 - Google Patents

一种触控面板和触控显示装置 Download PDF

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Publication number
WO2019104976A1
WO2019104976A1 PCT/CN2018/089147 CN2018089147W WO2019104976A1 WO 2019104976 A1 WO2019104976 A1 WO 2019104976A1 CN 2018089147 W CN2018089147 W CN 2018089147W WO 2019104976 A1 WO2019104976 A1 WO 2019104976A1
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WO
WIPO (PCT)
Prior art keywords
touch
touch panel
unit
bridge
units
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PCT/CN2018/089147
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English (en)
French (fr)
Inventor
蔺帅
张志华
王向前
Original Assignee
昆山国显光电有限公司
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Application filed by 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Publication of WO2019104976A1 publication Critical patent/WO2019104976A1/zh
Priority to US16/560,050 priority Critical patent/US10963082B2/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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • 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 existing touch panel often has a first direction electrode 11 and a second direction electrode 12, and the first direction is perpendicular to the second direction.
  • the electrode blocks of the two adjacent first directions pass through the metal bridge unit.
  • the bridge portions 131 on the second direction electrode 12 communicate with each other.
  • the enlarged structure of the specific structure is as shown in FIG. 1b.
  • the first direction electrode 11 and the second direction electrode 12 are often block electrodes, and the block electrodes 111 in the first direction electrode 11 are connected in series, and the block in the second direction electrode 12 is in a block shape.
  • the electrodes 121 are spaced apart, and between the adjacent block electrodes 121 of the second direction electrode 12, a bridging unit 13 is generally provided.
  • the bridging unit 13 includes a bridging portion 131 and a metal bridge 132 to make the first direction electrode 11 and the second
  • the directional electrodes 12 are insulated from each other and are each turned on.
  • the bridging unit In the existing touch panel, only the bridging unit is connected between adjacent block electrodes. Since the metal bridge in the bridging unit is thin, the metal bridge is prone to break during use, resulting in a phase. An open circuit occurs between the adjacent block electrodes, resulting in poor overall touch performance of the touch screen, and even causing touch failure.
  • the embodiment of the present invention provides a touch panel and a touch display device for improving the touch failure caused by the breakage of the metal bridge of the touch panel in the prior art.
  • 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 bridging unit comprising: at least two metal bridges having a hollow pattern, and a connecting portion connecting the at least two metal bridges.
  • At least two bridging units are disposed in parallel between two adjacent second touch units.
  • the connecting portion is insulatively embedded in the hollow region of the first touch electrode pattern.
  • the connecting portion is in insulation and overlap with the first touch electrode pattern.
  • the adjacent two second touch units corresponding to any of the bridge units respectively have a concave-convex structure at the spacing channel, and the metal bridge connects the connecting portion and the adjacent second touch unit 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.
  • the extending direction of the hollow pattern of the at least one bridging unit 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°.
  • a touch display device comprising the touch panel of any of the above.
  • the technical solution provided by the present application forms at least two channels for transmitting touch signals in the bridge unit by providing a hollow pattern in the bridge unit.
  • a channel for transmitting a touch signal is broken, other channels for transmitting the touch signal can still perform signal transmission, which alleviates the touch failure of the touch panel bridge unit in the prior art, thereby improving the touch panel.
  • Overall durability and long life the metal bridge connects the adjacent two second touch units through the connecting portion, which can effectively shorten the length of the metal bridge between the two second touch units, thereby reducing the reflection phenomenon caused by the metal bridge. .
  • 1a is a schematic structural view of a touch panel in the prior art
  • 1b is a partial enlarged view of a touch panel structure in the prior art
  • 2a is a schematic structural diagram of a touch panel provided by the solution
  • 2b is a second schematic structural diagram of a touch panel provided by the present solution.
  • 2c is an enlarged structural view of a touch panel connection portion provided by the solution
  • 2d is a partial cross-sectional view of a touch panel provided by the present solution
  • 3a is a schematic structural view of a touch panel including a triangular concave-convex structure provided by the present embodiment
  • FIG. 3b is a schematic structural diagram of a touch panel including a rectangular concave-convex structure provided by the present embodiment
  • FIG. 4 is a schematic structural diagram of a touch panel provided by the present scheme
  • FIG. 5 is a fourth schematic structural diagram of a touch panel provided by the present embodiment.
  • FIG. 6 is a schematic structural diagram of a touch panel provided by the present solution.
  • FIG. 7 is a schematic structural diagram of a touch panel provided by the present scheme.
  • FIG. 8 is a schematic structural diagram of a touch panel provided by the present solution.
  • FIG. 9 is a schematic diagram of a structure of a touch panel provided by the present solution.
  • the touch panel includes:
  • the first touch electrode pattern includes a plurality of first touch units 21, and a connection unit connecting the two adjacent first touch units;
  • the bridge unit 23 includes a connecting portion 231 and at least two metal bridges 232. On the two sides of the connecting portion 231 of FIG. 2a, a left metal bridge 232a and a right metal bridge 232b are respectively connected. Since the metal bridges 232a, 232b have a hollow pattern, the left metal bridge 232a can be divided into a channel for transmitting a touch signal. P and channel Q for transmitting the touch signal below.
  • the channel P transmitting the touch signal may be broken, and the channel P transmitting the touch signal cannot continue to transmit the electrical signal, but the metal bridge 232a has a hollow pattern, The channel Q transmitting the touch signal can still continue to transmit electrical signals, and the overall touch performance of the touch panel is not significantly affected.
  • the structure of the right side metal bridge 232b and the left side metal bridge 232a are the same, and the functions are similar, and will not be described again here.
  • the solution provided in this embodiment provides a hollow pattern on the metal bridges 232a, 232b, and divides a metal bridge into at least two channels for transmitting touch signals.
  • the channel transmitting the touch signal on one side is broken, the channel transmitting the touch signal on the other side can still transmit the electrical signal, thereby alleviating the touch failure caused by the break of the metal bridge of the touch panel, thereby improving the touch panel.
  • Durability since the bridge unit 23 in the touch panel often includes a metal material, metal reflection occurs on the touch panel, and the structure of the present scheme connects the adjacent two second touch units 22 through the connection portion 231, which can be obviously The area of the metal bridge unit 23 on the touch panel is reduced, and the metal reflection on the touch panel is alleviated.
  • the present disclosure provides a touch panel structure in which at least two bridge units 23 are disposed in parallel between two adjacent second touch units 22 .
  • the other bridging unit 23b can still be adjacent to the second two touches. Electrical signals are transmitted between the control units 22. Therefore, the parallel arrangement of at least two bridge units between the two adjacent second touch units 22 can further improve the durability of the touch panel, and the metal bridge in the touch panel can be normally transmitted after being broken. Touch signal.
  • the metal bridge in the bridge unit 23 is electrostatically damaged.
  • the solution is between the adjacent two second touch units 22.
  • a plurality of bridge units are provided to reduce the influence of static electricity on the touch performance to some extent.
  • the metal bridge has a hollow structure, so that the metal bridge has a plurality of channels for transmitting touch signals.
  • the structure of the solution can reduce the impact of electrostatic damage on the touch performance and improve the durability of the touch panel.
  • connection portion 231 of the touch panel provided by the present solution can be specifically divided into two structures:
  • the connecting portion 231 is insulatively embedded in the hollow region of the first touch electrode pattern.
  • FIG. 2c is an enlarged view of the connecting portion 231 based on FIG. 2a, in which the first touch electrode pattern has a hollowed out area, and a connecting portion 231 is disposed in the hollowed out area, which is shown by hatching in the figure, in the figure
  • the metal bridges 232a, 232b have a hollow pattern, and the two metal bridges 232a, 232b communicate with two adjacent second touch units through the connecting portion 231. In this configuration, the two adjacent second touch units 22 are connected through the connecting portion 231.
  • the connecting portion 231 can shorten the length of the metal bridge in the bridge unit and relieve the metal under the premise of ensuring the normal connection of the touch signals. The reflection caused by the long bridge.
  • the connecting portion 231 is in insulation and overlap with the first touch electrode pattern.
  • FIG. 2d is a cross-sectional view taken along the broken line.
  • an insulating layer 233 is interposed between the connecting portion 231 and the first touch electrode pattern 21, and the insulating layer 233 can ensure the first The touch electrode pattern and the second touch electrode pattern are insulated from each other to avoid short circuit or signal crosstalk.
  • the structure can shorten the length of the metal bridge in the bridge unit and alleviate the reflection phenomenon caused by the excessive length of the metal bridge.
  • 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. 3a.
  • the relief structure may also be rectangular, as shown by the dashed box indicated by 22a in Figure 6b.
  • 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 invention further provides a touch panel according to the structure provided by the foregoing embodiment.
  • the connecting unit of the first touch electrode pattern has a matching structure with the concave and convex structure 22 a of the second touch electrode pattern.
  • the connecting unit in the first touch electrode pattern in FIG. 3a and FIG. 3b is used to turn on the touch signal between the adjacent two touch units 22, and when the second touch electrode pattern has the concave-convex 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.
  • the present solution provides a touch panel, and an extending direction of the hollow pattern of the at least one bridging unit 23 is disposed along the second direction.
  • the structure includes a second touch unit 22, a first touch unit 21, and a bridge unit 23 that is disposed between two adjacent second touch units.
  • the bridge unit 23 is specifically configured.
  • Two rectangular patterns arranged on the one metal bridge 232a of the bridging unit 23 are arranged perpendicular to the second direction.
  • the two rectangular patterns disposed on the metal bridge 232a perpendicular to the second direction divide the metal bridge 232a into three upper, middle and lower transmission lines.
  • the bridging unit 23 may be broken, if The first channel on the top that transmits the touch signal breaks, and the two channels that transmit the touch signal in the middle and below can still transmit electrical signals between the electrode blocks.
  • the metal bridge 232b located on the right side of the connecting portion 231 has the same structure as the metal bridge 232a on the left side, and plays the same role, and will not be described herein. Therefore, the bridge unit 23 provided by the solution can ensure the electrical signal transmission on the touch panel after a certain degree of breakage, thereby improving the durability of the touch panel and alleviating the touch of the metal bridge after the touch panel is broken. The situation of failure.
  • the bridge unit 23 of the touch panel includes a connecting portion 231 and metal bridges 232a and 232b erected on the left and right sides of the connecting portion 231, wherein the metal bridges 232a and 232b are provided.
  • the openwork patterns can be arranged in the second direction.
  • the electrical signal can be transmitted along a plurality of routes. When any one of the bridging units 23 is broken, the bridging unit 23 can still ensure the signal transmission between the two adjacent second electrode units 22. normal. It can be seen that the bridging unit 23 shown in FIG. 5 can improve the problem of touch failure after the metal bridge in the touch panel is broken.
  • the touch panel structure is as shown in FIGS. 6 and 7.
  • 6 is that the extending direction of the hollow pattern is disposed along the second direction
  • FIG. 7 is that the extending direction of the hollow pattern is perpendicular to the second direction.
  • the touch panel structure shown in FIG. 6 and FIG. 7 has a connecting portion 231 in the two second touch units 22 as compared with the metal bridge structure that is directly disposed between the two adjacent second touch units 22 .
  • the shorter length of the metal wire can not only improve the problem of touch failure after the metal bridge breaks in the touch panel, but also reduce the reflective defects of the metal wire on the touch panel.
  • the present disclosure provides a touch panel, wherein the at least one bridging unit 23 is obliquely disposed along a preset direction, wherein an angle between the preset direction and the second direction is greater than 0° and less than 90 °.
  • Its structure is shown in Figure 8.
  • the metal bridge In the actual application process, for some flexible touch panels, it will bend under the action of external force. When bending, the metal bridge is subjected to bending stress. Since the metal bridge is thin, the bending line is short when bending, and the metal bridge is easily broken, and the contact between the two adjacent second touch units is poor, thereby causing touch failure.
  • the touch panel structure provided by the solution can disperse the stress in the region where the metal bridge is located, prolong the length of the bending of the metal wire during bending, extend the bending line, and release the stress uniformly, thereby avoiding the concentration of the bending stress only.
  • the problem of metal wire breakage caused by bending or touch operation is alleviated, thereby ensuring the touch performance of the touch panel and prolonging the service life.
  • each bridging unit 23 of the present solution may have a grid structure.
  • the touch signal is transmitted through the grid-like bridging unit 23
  • there are many kinds of transmission paths of the touch signal and the touch signal can be transmitted along any one of the transmission paths.
  • the grid-like bridging unit 23 breaks, the mesh around the break can continue to transmit signals. Therefore, the structure provided by the present application can improve the durability of the touch panel and improve the touch failure after the metal bridge is broken in the touch panel.
  • the bridge unit 23 may further include: a contact portion 23c at both ends of the bridge unit 23 for contacting and connecting the second touch unit 22, the contact portion 23c extending in a direction perpendicular to the bridge unit 23
  • the width is greater than the width of other portions of the bridging unit.
  • the contact surface of the bridging unit 23 and the electrode block is larger, and since the contact resistance is inversely proportional to the contact area, the larger contact area can effectively reduce the bridging unit 23 and the second contact.
  • the overall resistance of the second touch electrode pattern can be effectively reduced. Improve the overall sensitivity of the touch panel.
  • a touch display device includes any one of 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 broken, and improve the overall durability of the touch display device.
  • the problem of touch failure caused by metal bridge breakage in the touch panel is alleviated, and the service life of the device is prolonged.
  • 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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Abstract

一种触控面板及触控显示装置，该触控面板包括多条第一触控电极图案以及多条与第一触控电极图案绝缘交叉的第二触控电极图案，第二触控电极图案包括多个第二触控单元和连接相邻第二触控单元的至少一个桥接单元，桥接单元包含至少两个有镂空图案的金属桥，和连接至少两个金属桥的连接部。

Description

一种触控面板和触控显示装置
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：201721642833.3，名称:“一种触控面板和触控显示装置”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，第一方向与第二方向垂直，如图1a所示，相邻两个第一方向的电极块通过金属桥接单元经过第二方向电极12上的桥接部131相互连通。具体结构放大图如图1b所示，第一方向电极11和第二方向电极12往往为块状电极，第一方向电极11中的块状电极111相连设置，第二方向电极12中的块状电极121间隔设置，且第二方向电极12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包括桥接部131和金属桥132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，在相邻的块状电极之间仅通过该桥接单元连接，由于该桥接单元中的金属桥较细，在使用过程中容易出现金属桥断裂的情况，导致相邻的块状电极之间出现断路，从而导致触控屏整体触控性能不佳，甚至引发触控失效的情况。
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，用以改善现有技术中触控面板的金属桥在使用过程中出现断裂导致的触控失效的问题。
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单元，所述桥接单元包含：至少两个具有镂空图案的金属桥，以及连接所述至少两个金属桥的连接部。
优选的，相邻的两个第二触控单元之间并联设置有至少两个桥接单元。
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，所述连接部与所述第一触控电极图案绝缘交叠设置。
优选的，任一桥接单元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连接部与相邻的第二触控单元。
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，所述至少一个桥接单元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°。
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桥接单元设置镂空图案，从而在桥接单元 中形成至少两条传输触控信号的通道。当一条传输触控信号的通道出现断裂后，其他传输触控信号的通道依然可以进行信号传导，缓解了现有技术中触控面板桥接单元出现断裂后触摸失效的情况，从而提高触控面板的整体耐用性，延长使用寿命。而且，本方案中金属桥通过连接部使相邻的两个第二触控单元连通，能够有效减短两个第二触控单元之间金属桥的长度，从而减少由金属桥造成的反光现象。
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局部放大图；
图2a为本方案提供的一种触控面板结构示意图之一；
图2b为本方案提供的一种触控面板结构示意图之二；
图2c为本方案提供的一种触控面板连接部处的结构放大图；
图2d为本方案提供的一种触控面板局部剖面图；
图3a为本方案提供的一种包含三角形凹凸结构的触控面板结构示意图；
图3b为本方案提供的一种包含矩形凹凸结构的触控面板结构示意图；
图4为本方案提供的一种触控面板结构示意图之三；
图5为本方案提供的一种触控面板结构示意图之四；
图6为本方案提供的一种触控面板结构示意图之五；
图7为本方案提供的一种触控面板结构示意图之六；
图8为本方案提供的一种触控面板结构示意图之七；
图9为本方案提供的一种触控面板结构示意图之八。
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，该触控面板如图2a所示，该触控面板包括：
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21，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22，以及连接相邻的两个第二触控单元22的至少一个桥接单元23，所述桥接单元23包含：至少两个具有镂空图案的金属桥232a、232b，以及连接所述至少两个金属桥的连接部231。
在具有上述触控面板的显示屏的使用过程中，有可能使桥接单元断裂，导致触控性能不佳甚至触控失效的情况。对于本实施例提供的触控面板结构，在桥接单元23中包括有连接部231和至少两个金属桥232。在图2a的连接部231两侧，分别连接有左侧金属桥232a和右侧金属桥232b，由于金属桥232a、232b具有镂空图案，左侧金属桥232a可以划分为上方传输触控信号的通道P和下方传输触控信号的通道Q。当用户对触控面板进行触控操作时，有可能导致上方传输触控信号的通道P出现断裂，则传输触控信号的通道P无法继续传输电信号，但由于金属桥232a具有镂空图案，下方传输触控信号的通道Q依然可以继续传输电信号，触摸面板整体触摸性能不会受到明显影响。右侧金属桥232b与左侧金属桥232a的结构相同，所起到的作用相近，此处不再赘述。
由此可见，本实施例提供的方案在金属桥232a、232b上设置镂空图案，将一个金属桥分为至少两个传输触控信号的通道。当一侧传输触控信号的通道出现断裂时，另一侧传输触控信号的通道依然可以传输电信号，从而缓解触控面板由金属桥断裂导致触控失效的情况，由此提高触控面板耐用性。另外，由于触控面板中的桥接单元23中往往包括金属材质，在触控面板上会出现金属反光，本方案的结构通过连接部231将相邻两个第二触控单元22连通， 能够明显减少触控面板上金属桥接单元23的面积，缓解触控面板上金属反光的情况。
实施例二
基于上述实施例，本方案提供一种触控面板结构，相邻的两个第二触控单元22之间并联设置有至少两个桥接单元23。参见图2b，对于上述结构，当一个桥接单元23a出现多处断裂，每个传输触控信号的通道都出现断裂无法传输电信号时，另一个桥接单元23b依然可以在相邻两个第二触控单元22之间传输电信号。由此可见，在相邻两个第二触控单元22之间并联设置至少两个桥接单元能够进一步提高触控面板的耐用性，尽可能使触控面板中金属桥出现断裂后依然可以正常传输触控信号。
另外，在用户进行触控操作时，也有可能通过指尖向触控面板释放静电，使桥接单元23中的金属桥被静电击伤，本方案在相邻两个第二触控单元22之间设置有多个桥接单元，能一定程度上降低静电对触控性能造成的影响。而且，本方案中金属桥具有镂空结构，使金属桥中具有多个传输触控信号的通道，当金属桥受到静电击伤时有可能仅击伤金属桥中部分传输通道，其余传输通道依然可以传输触控信号。因此，本方案结构能降低静电击伤对触控性能的影响，提高触控面板的耐用性能。
基于上述实施例，本方案提供的触控面板的连接部231具体可以分为两种结构：
结构1：所述连接部231绝缘嵌设在所述第一触控电极图案的镂空区域内。
图2c为基于图2a的连接部231放大图，图中第一触控电极图案中具有镂空区域，在镂空区域中设置有连接部231，在图中以斜线阴影示出，在图中两个金属桥232a、232b具有镂空图案，两个金属桥232a、232b通过连接部231连通两个相邻的第二触控单元。在这种结构下，相邻两个第二触控单 元22通过连接部231相连通，该连接部231能够在保证触控信号连通正常的前提下，缩短桥接单元中金属桥的长度，缓解金属桥过长导致的反光现象。
结构2：所述连接部231与所述第一触控电极图案绝缘交叠设置。
基于图2a，图2d为沿虚线处剖切得到的剖面图，在交叠位置，连接部231与第一触控电极图案21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。另外，本结构能够缩短桥接单元中金属桥的长度，缓解金属桥过长导致的反光现象。
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3a，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3a中，第二触控单元22具有的凹凸结构为三角形，具体如图3a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6b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3a，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3a和图3b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。
基于上述实施例，本方案提供一种触控面板，所述至少一个桥接单元23的镂空图案的延伸方向沿所述第二方向设置。
该结构示意图如图4所示，图中包括第二触控单元22、第一触控单元21，以及架设在相邻两个第二触控单元之间的桥接单元23，该桥接单元23具体包括连接部231和搭设于连接部231左右两侧的金属桥232a、232b，其中，金属桥232a、232b具有镂空图案，以左侧金属桥232a为例，该金属桥232a具有的镂空图案可以为两个矩形图案，这两个矩形图案垂直于第二方向排列设置在该桥接单元23的一个金属桥232a上。金属桥232a上垂直于第二方向设置的两个矩形图案将金属桥232a划分为上、中、下三个传输线，当用户在触控操作过程中，桥接单元23有可能出现断裂的情况，假如位于上方的第一条传输触控信号的通道出现断裂，则位于中和下方的两条传输触控信号的通道依然可以在电极块之间传输电信号。同理，位于连接部231右侧的金属桥232b与左侧的金属桥232a结构相同，所起到的作用相同，此处不再赘述。因此，本方案提供的桥接单元23在出现一定程度的断裂后，依然可以保证触控面板上的电信号传输，由此提高触控面板的耐用性，缓解触控面板中金属桥断裂后触控失效的情况。
基于上述实施例提供的触控面板，参见图5，该触控面板的桥接单元23具体包括连接部231和搭设于连接部231左右两侧的金属桥232a、232b，其中，金属桥232a、232b的镂空图案可以沿第二方向排列设置。如图5所示的桥接单元23中，电信号可以沿多条路线传输，当桥接单元23中任意一条线路出现断裂时，桥接单元23依然可以保证两相邻第二电极单元22之间信号 传输正常。由此可见，图5中示出的桥接单元23能改善触控面板中金属桥出现断裂后触控失效的问题。
另外，当连接部231绝缘嵌设在所述第一触控电极图案的镂空区域内时，上述触控面板结构如图6和图7所示。其中，图6为镂空图案的延伸方向沿所述第二方向设置，图7为镂空图案的延伸方向垂直于所述第二方向设置。与直接搭设在相邻两个第二触控单元22之间的金属桥结构相比，图6和图7示出的触控面板结构中具有连接部231，在两个第二触控单元22之间金属线长度更短，不仅能够改善触控面板中金属桥出现断裂后触控失效的问题，而且能够降低触控面板上的金属线反光缺陷。
基于上述实施例，本方案提供一种触控面板，所述至少一个桥接单元23沿预设方向倾斜设置，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°。其结构如图8所示，在实际应用过程中，对于某些柔性触控面板而言，在外力的作用下会相应弯曲，在弯曲时，金属桥受到弯折的应力。由于金属桥较细，弯折时弯折线较短，导致金属桥容易被折断，相邻两个第二触控单元之间接触不良，从而引发触控失效。而本方案提供的触控面板结构能够将应力分散在金属桥所在的区域内，延长弯折时金属线受弯折处的长度，延长弯折线，使应力释放均匀，从而避免弯折应力仅集中在弯折线上，缓解由弯折或触控操作导致的金属线断裂的问题，进而保证触控面板触控性能，延长使用寿命。
另外，本方案每个桥接单元23均可以具有网格结构。通过具有网格状的桥接单元23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。当网格状的桥接单元23出现断裂时，断裂处周围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耐用性，改善触控面板中金属桥断裂后触控失效的问题。
对于上述桥接单元23，还可以包括：位于桥接单元23的两端且用于接触连接所述第二触控单元22的接触部23c，所述接触部23c沿垂直于所述桥 接单元23延伸方向的宽度大于所述桥接单元中其他部分的宽度。如图9所示，在这种结构下，桥接单元23与所述电极块的接触面较大，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桥接单元23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，若每个桥接单元23与第二触控单元22的接触面都具有本实施例的结构，则能有效降低第二触控电极图案整体电阻，提升触控面板整体灵敏度。
实施例三
一种触控显示装置，包括上述实施例任意一种触控面板。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出现断裂后触控失效的问题，提升触控显示装置整体耐用性，缓解触控面板中金属桥断裂导致的触控失效的问题，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。

Claims (14)

  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单元，所述桥接单元包含：至少两个具有镂空图案的金属桥，以及连接所述至少两个金属桥的连接部。
  2. 如权利要求1所述的触控面板，其中，相邻的两个第二触控单元之间并联设置有至少两个桥接单元。
  3. 如权利要求1或2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。
  4. 如权利要求1或2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。
  5. 如权利要求4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在交叠位置之间夹设有绝缘层。
  6. 如权利要求2所述的触控面板，其中，任一桥接单元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连接部与相邻的第二触控单元。
  7. 如权利要求6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。
  8. 如权利要求6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。
  9. 如权利要求1、2、6-8中任一项所述的触控面板，其中，所述至少一个桥接单元的镂空图案的延伸方向沿所述第二方向设置。
  10. 如权利要求9所述的触控面板，其中，所述桥接单元的两个金属桥 的镂空图案为两个矩形图案，所述矩形图案垂直于所述第二方向排列。
  11. 如权利要求9所述的触控面板，其中，所述桥接单元的金属桥的镂空图案沿第二方向排列。
  12. 如权利要求1，2，6-8中任一项所述的触控面板，其中，所述桥接单元还包括位于桥接单元的两端且用于接触连接所述第二触控单元的接触部，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桥接单元中其他部分的宽度。
  13. 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°。
  14. 一种触控显示装置，包括如权利要求1-13任意一项所述的触控面板。
PCT/CN2018/089147 2017-11-30 2018-05-31 一种触控面板和触控显示装置 WO2019104976A1 (zh)

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