公开(公告)号：US20210097251A1

公开(公告)日：2021-04-01

申请号：US16861576

申请日：2020-04-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xueyou CAO ,  Pengpeng WANG ,  Wenjuan WANG ,  Xiaoliang DING ,  Haisheng WANG ,  Ping ZHANG

IPC: G06K9/00 ,  H03K17/687

Abstract: The present disclosure relates to a circuit for fingerprint identification and a driving method thereof, a display panel, and a display device. The circuit for fingerprint identification of the present disclosure includes a voltage adjustment circuit, a photodiode, and a signal output circuit; wherein the voltage adjustment circuit is electrically connected with an anode of the photodiode, and the signal output circuit is electrically connected with a cathode of the photodiode; the voltage adjustment circuit is configured to adjust an anode voltage input to the photodiode to enable the photodiode to work in a linear region; and the signal output circuit is configured to amplify and output a signal output by the photodiode.