42‐4: LTPS TFT‐LCD with In‐cell Optical Fingerprint Scanner
Bozhi Liu, Binbin Chen, Xiaoxiao Wu, Xuanxian Cai, Xiaoqi Shi, Min Huang, Jiaqian Wu, Hailiang Wang, Xuexin Lan, Guozhao Chen, Junyi Li · SID Symposium Digest of Technical Papers · 2020
LTPS image sensor (LIS) driven by active pixel senor (APS) circuit based on LTPS backplane technology is demonstrated. Optical solution for LCD with in‐cell optical fingerprint scanning function is discussed. A 400PPI LTPS‐TFT LCD with in‐cell touch and in‐cell screen fingerprint scanning function is designed to realize fingerprint image capture when finger is 1.0mm height over the LIS array.