The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2019
Filed:
Jul. 14, 2016
Boe Technology Group Co., Ltd., Beijing, CN;
Beijing Boe Optoelectronics Technology Co., Ltd., Beijing, CN;
Xiaoliang Ding, Beijing, CN;
Xue Dong, Beijing, CN;
Haisheng Wang, Beijing, CN;
Xiaochuan Chen, Beijing, CN;
Yingming Liu, Beijing, CN;
Wei Liu, Beijing, CN;
Pengpeng Wang, Beijing, CN;
Changfeng Li, Beijing, CN;
Tao Ren, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
Disclosed is a fingerprint detection circuit comprising at least one fingerprint detection unit, a high level signal line, a low level signal line and an output unit, the fingerprint detection unit includes a charging switch, a discharging switch and an input energy storing unit. An output terminal of the charging switch is connected to an input terminal of the discharging switch, a cathode of the photodiode is electrically connected to an input terminal of the charging switch, an output terminal of the discharging switch serves as an output terminal of the fingerprint detection unit, one terminal of the input energy storing unit is electrically connected to the output terminal of the charging switch, the other terminal of the input energy storing unit is electrically connected to the low level signal line, an input terminal of the output unit is electrically connected to the output terminal of the fingerprint detection unit.