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WO2016155594A1 - 触控面板及制作方法、显示装置 - Google Patents

触控面板及制作方法、显示装置 Download PDF

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Publication number
WO2016155594A1
WO2016155594A1 PCT/CN2016/077520 CN2016077520W WO2016155594A1 WO 2016155594 A1 WO2016155594 A1 WO 2016155594A1 CN 2016077520 W CN2016077520 W CN 2016077520W WO 2016155594 A1 WO2016155594 A1 WO 2016155594A1
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WIPO (PCT)
Prior art keywords
signal transmission
transmission line
touch panel
touch
manufacturing
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PCT/CN2016/077520
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English (en)
French (fr)
Inventor
许邹明
胡明
罗鸿强
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/309,213 priority Critical patent/US10248237B2/en
Publication of WO2016155594A1 publication Critical patent/WO2016155594A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—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
    • G06F3/0446—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
    • 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; 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
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
    • 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 disclosure relates to the field of display technologies, and in particular, to a touch panel, a manufacturing method thereof, and a display device.
  • the touch panel can be divided into: resistive, capacitive, surface acoustic wave, and infrared, etc. According to the structural relationship between the touch panel and the display, the touch panel can be divided into: a single piece.
  • OGS Glass Solution
  • Electrostatic discharge Electro-Static Discharge, ESD for short
  • ESD Electrostatic discharge
  • LCD Organic Display
  • ESD design of the Touch process is mainly achieved by wrapping a GND line around the periphery. This approach has a certain protective effect on smaller ESD, but it has a very limited effect on large ESD, often causing the product to lose touch function, which poses a challenge to the yield and performance of the product.
  • the main purpose of the present disclosure is to provide a technical solution capable of releasing static electricity generated in a touch panel, thereby preventing the loss of the touch function of the touch panel caused by the static electricity protection being in place.
  • the improvement of the anti-static threshold of the touch panel improves the product yield and product performance of the touch panel.
  • the present disclosure provides a touch panel, a manufacturing method thereof, and a display device.
  • a touch panel includes: a touch electrode, a signal transmission line connected to the touch electrode; and a grounding conductor disposed in cross-insulation with the signal transmission line; wherein the signal transmission line and The grounding conductor forms a plurality of capacitive structures for storing static electricity at the intersection.
  • the touch panel further includes: an insulating dielectric layer between the signal transmission line and the grounding conductor.
  • the line width of the signal transmission line is greater than a preset width threshold, wherein the width threshold is 0.5 mm.
  • the line width is greater than or equal to 2.5 mm and less than or equal to 4.5 mm.
  • the signal transmission line is made of a transparent conductive material or a metal material.
  • the transparent conductive material comprises: indium tin oxide or aluminum-doped zinc oxide; the metal material comprises: molybdenum, aluminum or copper.
  • the touch electrode is made of indium tin oxide or aluminum-doped zinc oxide or graphene material.
  • the material of the insulating dielectric layer is a polypropylene film, or a polyethylene film, or air.
  • a display device including the above touch panel is provided.
  • a method for fabricating a touch panel includes: forming a signal transmission line connected to a touch electrode on the touch panel, and a grounding conductor disposed in cross-insulation with the signal transmission line; The signal transmission line and the grounding conductor form a plurality of capacitor structures for storing static electricity at intersection positions.
  • the step of forming a signal transmission line connected to the touch electrode on the touch panel and the grounding wire disposed in cross insulation with the signal transmission line further includes: forming the signal transmission line and the ground An insulating dielectric layer between the wires.
  • the line width of the signal transmission line is greater than a preset width threshold, wherein the width threshold is 0.5 mm.
  • the line width is greater than or equal to 2.5 mm and less than or equal to 4.5 mm.
  • the signal transmission line is made of a transparent conductive material or a metal material.
  • the transparent conductive material comprises: indium tin oxide or aluminum-doped zinc oxide; the metal material comprises: molybdenum, aluminum or copper.
  • the touch electrode is made of indium tin oxide or aluminum-doped zinc oxide or graphene material.
  • the material of the insulating dielectric layer is a polypropylene film, or a polyethylene film, or air.
  • the touch panel, the manufacturing method and the display device of the present disclosure can store static electricity generated on the touch electrode in time by using a plurality of capacitor structures formed by the signal transmission line and the grounding wire, and further pass through the grounding wire.
  • the static electricity is released to the ground, thereby protecting the internal pixels on the touch panel, thereby avoiding the loss of the touch function of the touch panel due to the generation of static electricity, thereby improving the product yield and product performance of the touch panel.
  • FIG. 1 is a schematic structural view of a touch panel according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a method of fabricating a touch panel according to an embodiment of the present disclosure.
  • the ESD for releasing static electricity generated by the touch electrodes is mainly achieved by wrapping a GND line around the periphery. This way is for static In the case of more electricity, the effect is very limited, and the touch panel is often lost. Based on this, the present disclosure mainly provides a solution capable of avoiding losing the touch function of the touch panel.
  • the embodiment of the present disclosure provides a touch panel including: a signal transmission line connected to a touch electrode on the touch panel; a grounding conductor disposed in cross-insulation with the signal transmission line; wherein the signal transmission line A plurality of capacitor structures for storing static electricity are formed at the intersection with the grounding conductor.
  • the signal transmission line and the grounding conductor are two plates of the above-described capacitance structure.
  • the positional relationship of the two plates does not have any influence on the function of storing the static electricity of the capacitor structure, that is, the grounding wire can be disposed under the signal transmission line, or the grounding wire can be set. Above the signal transmission line.
  • the touch panel may further include: an insulating dielectric layer between the signal transmission line and the grounding conductor.
  • the material of the insulating dielectric layer can be selected in many ways, for example, a polypropylene film, a polyethylene film, or the like. Any method of forming an insulating dielectric layer that can be used in the process of fabricating a touch panel can be considered.
  • an air medium may be disposed between the signal transmission line and the grounding conductor as an insulating medium, as long as it functions as an insulating medium between the capacitor plates.
  • the line width of the signal transmission line may be greater than a preset width threshold, wherein the width threshold is 0.5 mm.
  • the line width (width) of the signal transmission line for connecting the touch electrodes is generally set between 0.1 mm and 0.5 mm.
  • the embodiment of the present disclosure widens the line width of the signal transmission line.
  • the embodiment of the present disclosure further provides a better line width range for the line width of the signal transmission line, that is, the line width is greater than or equal to 2.5 mm and less than or equal to 4.5 mm.
  • the width of the signal transmission line is between 2.5mm and 4.5mm, and the above capacitance junction is formed.
  • the storage capacity of the structure is better.
  • the signal transmission line may be made of a transparent conductive material or a metal material.
  • the transparent conductive material may include: indium tin oxide (ITO) or aluminum-doped zinc oxide (AZO); the metal material may include: Mo (molybdenum), Al (aluminum) or Cu (copper).
  • the selection of the above transparent conductive material and metal material is only an optional material, and in practical applications, materials having the same or similar characteristics may be completely used, and are not limited to the above-mentioned optional materials.
  • the touch electrode may be made of ITO, AZO or graphene materials.
  • ITO indium tin oxide
  • AZO nitride oxide
  • graphene materials there is no limitation on the materials used for the touch electrodes, and materials suitable for the touch electrodes in the prior art are all considered.
  • the electrostatic protection unit (ESD) for dissipating static electricity in the structure has a plurality of multi-layer structures (ie, the above-mentioned capacitor structure), and is mainly composed of a transmission wire (ie, the above-mentioned signal transmission line), a grounding conductor, and an insulating medium between the two. .
  • a transmission wire ie, the above-mentioned signal transmission line
  • a grounding conductor ie, the above-mentioned signal transmission line
  • an insulating medium between the two insulating medium between the two.
  • one end of the transmission wire is connected to the transparent electrode (ie, the touch electrode), and the other end is connected to the Pad of the internal connection, and the grounding wire is connected to the transmission wire.
  • Such an arrangement structure allows the transmission line and the ground line to constitute a plurality of capacitors capable of storing static electricity from the transparent electrode.
  • FIG. 1 is a schematic structural diagram of a touch panel according to an embodiment of the present disclosure, as shown in FIG. 1 , in which:
  • the touch panel has transparent electrodes 101 arranged in a row, and transparent electrodes 102 arranged in a row.
  • the material of the transparent electrode may be indium tin oxide (ITO) or AZO or graphite thin.
  • the transparent electrodes 102 arranged in a row may be connected to each other through the via structure 201 and the insulating layer via holes.
  • a transmission wire 401 is connected between the transparent electrode 101 and the internally wired Pad.
  • the material of the transmission wire may be a transparent conductive material (ITO, AZO) or a metal material (such as Mo/Al/Mo, Cu).
  • the width of the transmission wire can be selected to be set between the line width range of 2.5mm-4.5mm. For example, in the actual process flow, it can be set to about half of the pixel pitch of the touch panel.
  • a GND trace 301 i.e., a ground lead
  • the insulating layer disposed therebetween constitutes a multilayer structure (i.e., a capacitor structure).
  • the insulating layer may be an Overcoat (OC) material or other insulating material. Due to the existence of multiple capacitor structures, when there is strong static intrusion, multiple layers of structure (equivalent to ESD) can release static electricity to the ground line in time.
  • the embodiment of the present disclosure further provides a display device including the above touch panel.
  • the display device may be any product or component having a display function such as a display panel, a television, a display, a digital photo frame, a mobile phone, a tablet computer, or the like.
  • FIG. 2 is a schematic diagram of a method of fabricating a touch panel according to an embodiment of the present disclosure. As shown in Figure 2, the process includes the following steps:
  • Step S202 forming a signal transmission line connected to the touch electrode on the touch panel, and a grounding wire disposed in cross-insulation with the signal transmission line; wherein the signal transmission line and the grounding wire are formed at a plurality of intersection positions for A capacitor structure that stores static electricity.
  • an insulating dielectric layer between the signal transmission line and the grounding conductor may be formed.
  • the above-mentioned capacitor structure for storing static electricity in the process of forming the entire touch panel, if the above-mentioned capacitor structure for storing static electricity is to be formed, different process flows may be adopted according to the positional relationship between the signal transmission line and the grounding conductor. For example, a grounding conductor can be formed first, then an insulating dielectric layer is formed, and finally a signal transmission line is formed.
  • the touch electrode since the touch electrode is connected to the signal transmission line, the touch electrode can be formed in the same layer as the signal transmission line.
  • the signal transmission line and the touch electrode may be formed in the same layer, and then the insulating dielectric layer is formed, and finally the grounding conductor is formed.
  • the above-mentioned capacitor structure capable of storing static electricity can be formed by ensuring that the signal transmission line and the grounding conductor are cross-insulated.
  • the structure of the touch panel provided by the embodiment of the present disclosure can protect the multi-layer structure when the touch panel generates a large current and a large voltage, and can release the static electricity generated on the touch electrode to the ground end in time to protect Internal pixels and improved ESD protection of touch panel products, and improved process yield of touch panel products.

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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)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种触控面板及制作方法、显示装置。其中，该触控面板的制作方法包括：形成与触控面板上的触控电极（101）连接的信号传输线（401），以及与所述信号传输线（401）交叉绝缘设置的接地导线（301）；其中，所述信号传输线（401）与所述接地导线（301）在交叉位置形成多个用于存储静电的电容结构。

Description

触控面板及制作方法、显示装置
相关申请的交叉引用
本申请主张在2015年4月3日在中国提交的中国专利申请号No.201510159679.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示技术领域，尤其是涉及一种触控面板及制作方法、显示装置。
背景技术
随着科学技术的飞速发展，触控技术的应用十分广泛。例如，可以将其应用于工业生产领域(中央控制器、量测仪器等)、生活应用领域(智慧手机、全球定位系统(Global Positioning System，简称为GPS)、小笔电等)、商业应用领域(自助收银、销售终端(Point Of Sale，简称为POS)等)、教育娱乐领域(电子书、电子白板等)及医疗设备领域(护理车、医疗诊断机等)。
目前，触控面板(Touch Panel)按照感应原理可分为：电阻式、电容式、表面声波式以及红外式等，根据触控面板与显示屏的结构关系可将触控面板分为：单片玻璃解决方案(One Glass Solution，简称为OGS)触控面板、覆盖表面式(On-cell)触控面板以及内嵌式(In-cell)触控面板。
在触控面板的设计中必须考虑静电释放(Electro-Static Discharge，简称为ESD)及其防护。由于Touch工艺中不涉及半导体技术，因此无法制作类似于LCD的静电防护器件。目前，Touch工艺的ESD设计主要是通过外围包裹一根GND线来实现的。这种方式对于较小的ESD具有一定的防护作用，但对于较大的ESD来说作用非常有限，经常使产品失去触摸功能，这对产品的良率和性能提出了挑战。
因此，如何设计一种静电防护解决方案，以提高产品的抗静电阈值，从而提高产品良率是目前一项急需解决的课题。
发明内容
本公开的主要目的在于提供一种技术方案，其能够释放触控面板中产生的静电，从而可以避免静电防护不到位造成触控面板的触摸功能丧失，并通 过提高触控面板的抗静电阈值的方式提高触控面板的产品良率和产品性能。
为了达到上述目的，本公开提供了一种触控面板及制作方法、显示装置。
根据本公开的一个方面，提供了一种触控面板，包括：触控电极，与触控电极连接的信号传输线；以及与所述信号传输线交叉绝缘设置的接地导线；其中，所述信号传输线与所述接地导线在交叉位置形成多个用于存储静电的电容结构。
可选地，上述触控面板还包括：位于所述信号传输线与所述接地导线之间的绝缘介质层。
可选地，所述信号传输线的线宽大于预先设定的宽度阈值，其中，所述宽度阈值为0.5mm。
可选地，所述线宽大于等于2.5mm，且小于等于4.5mm。
可选地，所述信号传输线采用透明导电材料或金属材料制成。
可选地，所述透明导电材料包括：氧化铟锡或掺铝氧化锌；所述金属材料包括：钼、铝或铜。
可选地，所述触控电极采用氧化铟锡或掺铝氧化锌或石墨烯材料制成。
可选地，所述绝缘介质层的材料为聚丙烯薄膜，或者聚乙烯薄膜，或者空气。
根据本公开的另一个方面，提供了一种显示装置，包括：上述触控面板。
根据本公开的又一个方面，提供了一种触控面板的制作方法，包括：形成与触控面板上的触控电极连接的信号传输线，以及与所述信号传输线交叉绝缘设置的接地导线；其中，所述信号传输线与所述接地导线在交叉位置形成多个用于存储静电的电容结构。
可选地，该制作方法中形成与触控面板上的触控电极连接的信号传输线，以及与所述信号传输线交叉绝缘设置的接地导线的步骤还包括：形成位于所述信号传输线与所述接地导线之间的绝缘介质层。
可选地，所述信号传输线的线宽大于预先设定的宽度阈值，其中，所述宽度阈值为0.5mm。
可选地，所述线宽大于等于2.5mm，且小于等于4.5mm。
可选地，所述信号传输线采用透明导电材料或金属材料制成。
可选地，所述透明导电材料包括：氧化铟锡或掺铝氧化锌；所述金属材料包括：钼、铝或铜。
可选地，所述触控电极采用氧化铟锡或掺铝氧化锌或石墨烯材料制成。
可选地，所述绝缘介质层的材料为聚丙烯薄膜，或者聚乙烯薄膜，或者空气。
与相关技术相比，本公开所述的触控面板及制作方法、显示装置，可以通过信号传输线与接地导线形成的多个电容结构，及时存储触控电极上产生的静电，并进一步通过接地导线将静电释放到接地端，从而保护了触控面板上的内部像素，避免由于静电的产生导致触控面板的触摸功能的丧失，进而提高了触控面板的产品良率和产品性能。
附图说明
图1是根据本公开实施例的触控面板的结构示意图；
图2是根据本公开实施例的触控面板的制作方法示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域的普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
在目前的触控面板(例如，OGS触控面板)中，用于释放触摸电极产生的静电的ESD主要是通过外围包裹一根GND线来实现的。这种方式对于静 电较多的情况来说作用非常有限，经常使触控面板失去触摸功能。基于此，本公开主要提供一种能够避免使触控面板失去触摸功能的解决方案。
本公开实施例提供了一种触控面板，该触控面板包括：与触控面板上的触控电极连接的信号传输线；与所述信号传输线交叉绝缘设置的接地导线；其中，所述信号传输线与所述接地导线在交叉位置形成有多个用于存储静电的电容结构。
在上述能够存储静电(触控电极是主要的静电产生源)的电容结构中，所述信号传输线和所述接地导线是上述电容结构的两个极板。这两个极板的位置关系并不会对该电容结构存储静电的功能造成任何影响，也就是说，可以将所述接地导线设置在所述信号传输线的下面，也可以将所述接地导线设置在所述信号传输线的上面。
在本公开实施例中，上述触控面板还可以包括：位于所述信号传输线与所述接地导线之间的绝缘介质层。
也就是说，在工艺制作流程中，在形成所述信号传输线和所述接地导线的过程中，需要形成一层绝缘介质层。该绝缘介质层的材料的选择可以有很多，例如，聚丙烯薄膜，聚乙烯薄膜等。只要能够适合在制作触控面板的工艺中使用的形成绝缘介质层的方法都可以考虑。
当然，如果工艺流程允许，也可以在所述信号传输线和所述接地导线之间设置空气介质作为绝缘介质，只要能够起到作为电容极板之间的绝缘介质的作用即可。
在本公开实施例中，所述信号传输线的线宽可以大于预先设定的宽度阈值，其中，所述宽度阈值为0.5mm。目前，用于连接触控电极的信号传输线的线宽(宽度)一般设置在0.1mm-0.5mm之间。为了使信号传输线作为上述电容结构的一个极板并能够使该电容结构存储较多的静电，本公开实施例将信号传输线的线宽加宽。当然，如果采用目前的线宽范围也是可以的，只是形成的上述电容的存储静电能力不佳。
在此基础上，本公开实施例进一步为信号传输线的线宽给出了一个更优的线宽范围，即：所述线宽大于等于2.5mm，且小于等于4.5mm。通过实验效果的检验，信号传输线的宽度位于2.5mm-4.5mm之间，形成的上述电容结 构的存储静电能力比较好。
在本公开实施例中，所述信号传输线可以采用透明导电材料或金属材料制成。其中，所述透明导电材料可以包括：氧化铟锡(ITO)或掺铝氧化锌(AZO)；所述金属材料可以包括：Mo(钼)、Al(铝)或Cu(铜)。
当然，以上透明导电材料和金属材料的选择仅为可选的材料，在实际应用中，完全也可以采用具有相同或相似特性的材料，并不以上述可选的材料为限。
在本公开实施例中，所述触控电极可以采用ITO、AZO或石墨烯材料制成。当然，对于触控电极采用的材料并不作出任何限定，现有技术中适合做触控电极的材料都是可以考虑的。
为了使本公开实施例提供的上述电容结构更便于理解，以下结合附图1对上述电容结构进行进一步的描述。
由于目前触控产品在静电防护上存在的一定缺陷，且ESD问题大多数出现在OGS内部的桥点区域，因此以下以OGS触控面板的结构为例进行说明。该结构中用于疏导静电的静电防护单元(ESD)具有多个多层结构(即上述电容结构)，主要由传输导线(即上述信号传输线)、接地导线以及位于二者之间的绝缘介质组成。其中，传输导线的一端与透明电极(即上述触控电极)相连接，另一端与内部接线的Pad连接，接地导线跨接于传输导线上。这样的设置结构使得传输导线与接地导线构成多个能够存储来自透明电极上的静电的电容。
请参考图1，图1是根据本公开实施例的触控面板的结构示意图，如图1所示，在该结构中：
(1)触控面板具有成行排列的透明电极101，以及成列排列的透明电极102。透明电极的材料可以为氧化铟锡(ITO)或AZO或石墨稀。成列排列的透明电极102之间可以通过过桥结构201和绝缘层过孔连接。
(2)透明电极101与内部接线的Pad之间连接一根传输导线401。传输导线的材质可以是透明导电材料(ITO、AZO)或金属材料(如Mo/Al/Mo、Cu)。其中，传输导线的宽度可以选择设置在线宽范围2.5mm-4.5mm之间。例如，实际工艺流程中，可以设置为触控面板的像素间距的一半左右。
(3)在每条传输导线401区域的上层或下层还设置有一GND走线301(即接地导线)，其与设置在它们之间的绝缘层一起构成一个多层结构(即电容结构)。其中，绝缘层可以是Overcoat(OC)材料或者其他绝缘材料。由于多个电容结构的存在，当有较强静电入侵时，多个多层结构(相当于ESD)就能够及时将静电释放至接地线上。
本公开实施例还提供了一种显示装置，该显示装置包括上述触控面板。所述显示装置可以为：显示面板、电视、显示器、数码相框、手机、平板电脑等任何具有显示功能的产品或部件。
对应于上述触控面板，本公开实施例还提供了一种触控面板的制作方法。图2是根据本公开实施例的触控面板的制作方法示意图。如图2所示，该流程包括以下步骤：
步骤S202、形成与触控面板上的触控电极连接的信号传输线，以及与所述信号传输线交叉绝缘设置的接地导线；其中，所述信号传输线与所述接地导线在交叉位置形成多个用于存储静电的电容结构。
在本公开实施例中，在形成上述信号传输线和所述接地导线的过程中，还可以形成位于所述信号传输线与所述接地导线之间的绝缘介质层。
也就是说，在形成整个触控面板的过程中，若要形成上述用于存储静电的电容结构，可以根据信号传输线和接地导线的位置关系采用不同的工艺流程。例如，可以先形成接地导线，再形成绝缘介质层，最后形成信号传输线。当然，由于触控电极与信号传输线是连接的，因此，触控电极可以与信号传输线同层形成。当然，也可以同层形成信号传输线和触控电极，再形成绝缘介质层，最后形成接地导线。总之，不论采用哪种工艺流程，只要保证信号传输线和接地导线交叉绝缘设置即可形成上述能够存储静电的电容结构。
通过本公开实施例提供的触控面板的结构，当触控面板产生大电流和大电压时，可以让多层结构承受，并可以将触控电极上产生的静电及时释放至接地端，从而保护了内部像素，并提升了触控面板产品的ESD防护性能，并且提高了触摸面板产品的制程良率。
以上所述是本公开的可选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以做出若干改进和润饰， 这些改进和润饰也应视为包含在本公开的保护范围之内。

Claims (17)

  1. 一种触控面板，包括：
    触控电极；
    与触控电极连接的信号传输线；以及
    与所述信号传输线交叉绝缘设置的接地导线；
    其中，所述信号传输线与所述接地导线在交叉位置形成多个用于存储静电的电容结构。
  2. 根据权利要求1所述的触控面板，还包括：位于所述信号传输线与所述接地导线之间的绝缘介质层。
  3. 根据权利要求2所述的触控面板，其中，所述信号传输线的线宽大于预先设定的宽度阈值，其中，所述宽度阈值为0.5mm。
  4. 根据权利要求3所述的触控面板，其中，所述线宽大于等于2.5mm，且小于等于4.5mm。
  5. 根据权利要求1至4中任一项所述的触控面板，其中，所述信号传输线采用透明导电材料或金属材料制成。
  6. 根据权利要求5所述的触控面板，其中，
    所述透明导电材料包括：氧化铟锡或掺铝氧化锌；
    所述金属材料包括：钼、铝或铜。
  7. 根据权利要求1所述的触控面板，其中，所述触控电极采用氧化铟锡或掺铝氧化锌或石墨烯材料制成。
  8. 根据权利要求2所述的触控面板，其中，所述绝缘介质层的材料为聚丙烯薄膜，或者聚乙烯薄膜，或者空气。
  9. 一种显示装置，包括权利要求1至8中任一项所述的触控面板。
  10. 一种触控面板的制作方法，包括：
    形成与触控面板上的触控电极连接的信号传输线，以及与所述信号传输线交叉绝缘设置的接地导线；
    其中，所述信号传输线与所述接地导线在交叉位置形成多个用于存储静电的电容结构。
  11. 根据权利要求10所述的制作方法，形成与触控面板上的触控电极连接的信号传输线，以及与所述信号传输线交叉绝缘设置的接地导线的步骤还包括：
    形成位于所述信号传输线与所述接地导线之间的绝缘介质层。
  12. 根据权利要求11所述的制作方法，其中，所述信号传输线的线宽大于预先设定的宽度阈值，其中，所述宽度阈值为0.5mm。
  13. 根据权利要求12所述的制作方法，其中，所述线宽大于等于2.5mm，且小于等于4.5mm。
  14. 根据权利要求10至13中任一项所述的制作方法，其中，所述信号传输线采用透明导电材料或金属材料制成。
  15. 根据权利要求14所述的制作方法，其中，
    所述透明导电材料包括：氧化铟锡或掺铝氧化锌；
    所述金属材料包括：钼、铝或铜。
  16. 根据权利要求10所述的制作方法，其中，所述触控电极采用氧化铟锡或掺铝氧化锌或石墨烯材料制成。
  17. 根据权利要求11所述的制作方法，其中，所述绝缘介质层的材料为聚丙烯薄膜，或者聚乙烯薄膜，或者空气。
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