Touch panel and manufacturing method thereof
A touch panel and manufacturing method technology, applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of weak electrical conductivity, high cost, poor damage resistance, etc., to reduce contact resistance, increase contact area, The effect of enhancing electrical conductivity
Active Publication Date: 2021-07-02
GUANGZHOU GOVISIONOX TECH CO LTD
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Problems solved by technology
Among them, TX or RX includes several metal wires and transparent electrodes stacked, and the commonly used transparent electrode is ITO (indium tin oxide). With the popularization of flexible display products, the disadvantages of ITO are gradually exposed: due to its large resistance, The problems of high cost and poor damage resistance limit the development of flexible touch screens
[0004] Based on the above factors, in recent years, it has become a trend to replace ITO with nano-metal wires such as nano-silver wires that have outstanding performance in terms of conductivity, light transmittance, and bendability. Problems, such as the poor contact effect between the nano-silver wire and the metal lead on the peripheral lead area of the touch screen, and weak electrical conductivity
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[0031] As mentioned in the background art, although metal oxides such as ITO have excellent light transmittance and electrical conductivity, they are not suitable for the preparation of flexible devices due to the problems of high resistance, high cost, and poor damage resistance. Therefore, the industry is trying to develop materials to replace ITO, such as conductive polymers, carbon nanotubes, graphene, and silver nanowires. Among them, silver nanowires (SilverNano Wires, SNW) are representative of nano-metal wires due to nanoscale size effects. The transparent conductive film prepared by it has a flat surface, is resistant to bending, and has good electrical conductivity. It is considered to be the preferred alternative material for metal oxides.
[0032] However, the adhesion of traditional nano-silver wires is relatively poor. In order to solve the adhesion problem between nano-silver wires and subsequent metal leads, the inventors once tried to add OC (over coater) glue ...
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Abstract
The invention discloses a touch panel and a manufacturing method thereof. The manufacturing method of the touch panel includes: providing a substrate; forming several protruding structures on the substrate; forming a nanometer metal wire layer on the substrate, and The nano metal wire layer covers the protruding structure, and the nano metal wire layer has a groove; and a lead layer is formed on the nano metal wire layer. In the manufacturing method of the touch panel provided by the present invention, the nano-metal wire layer is formed after forming several protruding structures, so that the nano-metal wire layer forms a groove on the side away from the substrate, and then forms a groove on the side of the substrate. A lead layer is formed on the nano metal wire layer, so that the lead layer is partially embedded in the nano metal wire layer, which increases the contact area between the lead layer and the nano metal wire layer, and reduces the contact area between the lead layer and the nano metal wire layer. The contact resistance between the nanometer metal wire layers is improved, and the conductivity is enhanced.
Description
technical field [0001] The invention relates to the field of touch technology, in particular to a touch panel and a manufacturing method thereof. Background technique [0002] Touch panel (English full name is Touch Panel), also known as touch screen and touch screen, is a device formed on the display surface of an image display device, which uses conductors such as human body or capacitive pen to input commands, and can replace the mouse, keyboard, etc. Input devices such as external input devices and mechanical input keys can effectively simplify the structure of electronic products such as computers and mobile phones, and have very broad application prospects. [0003] The touch panel includes a substrate and a touch structure formed on the substrate. The touch position is sensed by the capacitance change of the touch structure. The touch structure includes two pairs of touch electrodes, which are commonly referred to as TX (transmission signal electrode) and RX (receivi...
Claims
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IPC IPC(8): G06F3/047
CPCG06F3/047G06F2203/04102G06F2203/04103
Inventor 刘如胜袁波黄根茂盛翠翠徐琳
Owner GUANGZHOU GOVISIONOX TECH CO LTD