A metal mesh structure and touch screen

Abstract

The invention relates to the field of touch screens, in particular to a metal mesh structure and a touch screen. The metal reflective stripes of the metal mesh structure and the touch screen adoptingthe metal mesh structure are extremely weak and have good optical performance, and at the same time, the phenomenon of electrostatic interference between layers can be avoided. Compared with the traditional ITO touch screen, the production of the metal mesh touch screen has universality, A metal mesh touch screen is suitable for a yellow light proces, As that metal transfer printing process and the laser etching and other touch screen production processes, the material for forming the metal mesh is cheap, the expensive ITO material is not needed, and the cost is low. In addition, the structural design of the metal mesh of the invention can effectively improve the problem of optical difference, and the touch screen has uniform overall display, good optical performance and better visual feeling.

Description

Technical field [0001] The invention relates to the field of flat panel display technology, in particular to the field of touch screens, and in particular to a metal grid structure and a touch screen. Background technique [0002] The traditional OGS touch screen uses indium tin oxide (ITO) to make the touch electrode layer. The resistivity of the indium tin oxide (ITO) square resistance is usually tens to hundreds of ohms, because of its large resistance and poor conductivity. The current noise is relatively high. After the OGS touch screen is combined with the LCM display, the finished product will also add the noise brought by the LCM display, which affects the touch sensitivity. Indium tin oxide (ITO) is used as a material for touch electrodes and contains rare metals. The price is expensive, which increases the production cost of the touch screen; and the temperature required for high-temperature indium tin oxide (ITO) coating is about 400°C, which requires high energy consu...

AI Technical Summary

Problems solved by technology

[0009] At present, the OGM touch screen sensor (sensor) is made of very fine metal wires to form a metal grid structure, and the X-direction electrodes or Y-direction electrodes are formed by designing breakpoints. Since the metal wire width is usually 3-5um very thin, a single wire is resistant to The electrostatic (ESD) capability is weak, and at the same time, the number of breakpoints is huge, often resulting in isolated metal lines isolated by breakpoints, and these isolated metal lines isolated by breakpoints are completely disconnected from other metal line channels. When being hit by air static electricity, a coupled high voltage will be generated. Since there is no discharge path, when the voltage is greater than the interlayer discharge voltage limit, these isolated metal lines isolated by breakpoints will carry out electrostatic discharge to the metal lines of the other layer. (The metal line isolated by the breakpoint discharges to the channel of another layer of metal grid structure, or the metal line isolated by the breakpoint discharges to the metal line designed with breakpoints in another layer of metal grid structure), generating Electrostatic bad intersections, static bad phenomena occur, resulting in short circuit or open circuit between the metal wire layers of the OGM Sensor, affecting the normal function of the touch screen (TP)

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