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:
Jan. 24, 2023
Filed:
Mar. 31, 2021
Beihai Hkc Optoelectronics Technology Co., Ltd., Beihai, CN;
Hkc Corporation Limited, Shenzhen, CN;
En-tsung Cho, Beihai, CN;
Fengyun Yang, Beihai, CN;
Je-hao Hsu, Beihai, CN;
Haijiang Yuan, Beihai, CN;
BEIHAI HKG OPTOELECTRONICS TECHNOLOGY CO., LTD., Beihai, CN;
HKC CORPORATION LIMITED, Shenzhen, CN;
Abstract
Disclosed are an optical fingerprint sensor, a preparation method thereof and a display device. The optical fingerprint sensor includes: a substrate; and a sensor unit, disposed on the substrate and including a thin film transistor and a photosensor electrically connected to the thin film transistor, where the thin film transistor includes a source electrode, a drain electrode, a semiconductor layer, and a light shield layer formed over a channel region between the source electrode and the drain electrode and shielding the semiconductor layer exposed in the channel region.