公开(公告)号：US20210384904A1

公开(公告)日：2021-12-09

申请号：US16965367

申请日：2020-06-23

Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Chao TIAN

IPC: H03K17/94 ,  H01L27/146 ,  G06K9/00

Abstract: An optical fingerprint identification circuit and a display panel are provided. The optical fingerprint identification circuit adds a reset unit at the gate of the driving transistor. The anode of the photodiode is electrically connected to the scan line. The optical fingerprint identification circuit could effectively avoid the reverse breakdown risk of the photodiode while realizing the fingerprint identification. It could reduce the requirement for the reverse breakdown voltage of the photodiode and requirement for the performance of the sensor. Furthermore, the circuit structure is simpler and the number of the TFTs is reduced. This improves the integration of the circuit.