Date

Place

[P1-130]
14:00 ~ 15:30
Title:Suppression of Moire Fringes Induced by Metal Meshes for Touch Screen Panels
Dongkyun Shin, Jin-Young Lee, Jin-Hwan Lee, Kwang-Jun Choi, Su-ho Yoo, Kyung-Jun Jeon, and Jongwoon Park (Korea Univ. of Tech. and Education, Korea)
Abstract: For touch screen panels (TSPs), metal films such as silver (Ag) and copper (Cu) exhibiting lower price, higher electrical conductivity, and superior durability attract much attention for medium and large TSPs. However, the moire fringes are inevitably generated owing to the interference between the metal grid of TSPs and a black matrix (BM) in display panels. With attempt to eliminate such moire fringes, we have designed horseshoe-shaped metal meshes in the presence of the typical BM structure used in a S-IPS panel. To quantify the moire fringes, we have computed the standard deviation (SD) from the ray distribution as a function of the crossing angle. Compared with the rectangular metal grid, the available range of crossing angles where the SD value reaches a flat bottom becomes broader by the horseshoe-shaped metal grid. Within some range of crossing angles, the random metal grid shows even higher SD value due to point defects, compared with the other metal grids.
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