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:
Oct. 31, 2023
Filed:
Jun. 30, 2020
Applicant:
Wuhan China Star Optoelectronics Technology Co., Ltd., Hubei, CN;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06V 40/13 (2022.01); G06V 10/147 (2022.01); H03F 3/04 (2006.01);
U.S. Cl.
CPC ...
G06V 40/1318 (2022.01); G06V 10/147 (2022.01); G06V 40/13 (2022.01); H03F 3/04 (2013.01); G09G 2310/0291 (2013.01);
Abstract
A fingerprint readout circuit and a display panel are disclosed. The fingerprint readout circuit includes a voltage amplifier unit, a fingerprint readout unit, and a source follower unit. The voltage amplifier unit is coupled to the fingerprint readout unit and the source follower unit, and the fingerprint readout unit is coupled to the source follower unit. The fingerprint readout circuit has both current and voltage amplification functions. Therefore, a voltage difference is amplified, facilitating reading out fingerprint signals accurately and enhancing fingerprint readout precision and accuracy.