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Poster Session :
Interactive Display Systems Posters
Thursday, May 16, 2024, 5:00 PM – 8:00 PM / San Jose Convention Center, Room 220A
P.174 - Improvement of Etching Pattern in TOE Structure Display Based on Pattern Design and Stuck-Up Optimization
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Xinrrong Yi, Shuang Zhang, Lei Zhang, Hui Li, Xinshuai Yang, Pengle Dang, Tongmin Liu
Hefei Visionox Technology Co., Ltd. Hefei China
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There are metal and space regions in a touch panel (TP) pattern. Their optical performance is not the same due to the difference of reflectivity. Besides, the spectral response of the human eye differs to light of various wavelengths. Humans have different brightness sensations for light with the same radiation power but different wavelengths, and are most sensitive to the light of 555nm wavelength. Thus, texture similar to a touch panel pattern can be seen in specified directions. Shadowless eliminates or attenuates the visual differences.To achieve the desired effect, increasing the quantity of space in the metal region, which can make the space distribution uniform; adjusting the fracture mode of the space region; and adjusting the space gap are all valid ways to reduce visibility of the etching pattern. Sputtering SiNx / Nb2O5 on the metal layer that is etched by hydrofluoric (HF) acid to rough the surface is also an effective method to shadowless, which can lower reflectivity on metal regions.