The display with blackened metal backplane presents superior decorative black appearance or high optical density (OD) light shielding integrated to optical fingerprinting senor. In this paper, we have fabricated two-layer blackened metal wiring by high resolution patterning techniques with dry etching method and optimized the reflectivity of the novel blackened material. It has been utilized to an optical in-cell fingerprint LCD to improve the reflectivity, which achieves 64% reflectivity reducing and lower than previous one. And it also has been employed for achieving narrowed line-width high and high optical density demand for collimated layer in optical fingerprint sensor integrated to an OLED display.
- 1 et al., “Integrated Polycrystalline Silicon Photomask Technology for Low-Temperature Polycrystalline Silicon (LTPS) TFTs” IDW of Technical Papers, AMD4 - 4L, 443–446 (2019)
- 2 K. U. et al., “Blackening of TFT Wiring by Depositing High Durability Film” IDW of Technical Papers, FMC8-2, 676–678 (2019)