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P‐16.1: New Metal Mesh Pattern Design Proposal of Touch Screen and Research of its Optical and Electrical Performance
Author(s) -
Xu Shifeng,
Yang Hong,
Guo Zongjie,
Zhang Lei,
Xie Xiaodong,
Zhang Xinxiu
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12837
Subject(s) - computer science , pixel , grid , moiré pattern , computer vision , mathematics , geometry
The Metal Mesh technology with the advantages of low impedance and low cost compared with ITO technology, is widely used in the field of touch area, especially in high‐performance touch field. Because the material is not transparent, the metal touch sensor pattern in the production must be made into fine wire mesh grid, which leads to two problems. One is the Moiré caused by superposition of periodic mesh grid and liquid crystal display RGB arrangement of periodic unit due to beat effect. Since the Mesh grid cycle is not an integer multiple with the pixel cycle, it cannot form the exact same pixel limited by the splicing problem, this will lead to uneven resistance and capacitance in the touchscreen functional area. It is studied on moiré mechanism and the method to solve the moiré by optical simulation and actual attached verification. The study also puts forward a new design of Metal Mesh pattern which makes each pixel exactly same with each other. In result, each Pixel unit is completely symmetrical inside to solve the electrical uniformity problem of Metal Mesh touch screen function area. It is indicated that this pattern design can improve the electrical uniformity and performance of OGM products effectively in the in practical application.