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. 19, 2022
Filed:
Dec. 01, 2020
Novatek Microelectronics Corp., Hsin-Chu, TW;
Tsen-Wei Chang, Taichung, TW;
Chih-Peng Hsia, Hsinchu County, TW;
Wei-Lun Shih, Hsinchu, TW;
Hong-Chu Chen, Hsinchu, TW;
Su-Wei Lien, Hsinchu, TW;
Sheng-Wen Hsiao, Changhua County, TW;
Liang-Chi Cheng, Hsinchu, TW;
NOVATEK Microelectronics Corp., Hsin-Chu, TW;
Abstract
A control method for an optical fingerprint sensor and a touch controller are provided for canceling or reducing capacitive loading. The optical fingerprint sensor includes a plurality of pixels, and each of the pixels has a first control signal line and a second control signal line. Each of the pixels is further coupled to a first voltage source line, a second voltage source line and a sensing line. The control method includes the step of applying an anti-loading driving (ALD) signal on at least one of the first control signal line, the second control signal line, the first voltage source line, the second voltage source line and the sensing line when the touch controller is in a touch operation period.