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:
May. 12, 2020
Filed:
Oct. 02, 2018
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Mengwen Zhang, Shenzhen, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
A fingerprint sensor and a terminal device are provided, including: a first drive circuit, configured to generate a periodic driving signal according to a periodic first input signal, periods of the first input signal and the driving signal being both a predetermined period; each second drive circuit corresponding to a column of voltage integrators respectively, the each second drive circuit being configured to generate a column select signal according to a second input signal, the column select signal being used for controlling an operating state of a corresponding column of voltage integrators; and each of N columns of voltage integrators configured to receive the driving signal and the column select signal generated by a corresponding second drive circuit, and charge or integrate a fingerprint capacitor according to the driving signal and the column select signal.