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:
Jul. 18, 2023
Filed:
Sep. 23, 2022
Applicant:
Luxsentek Microelectronics Corp., New Taipei, TW;
Inventors:
Wen-Sheng Lin, New Taipei, TW;
Sheng-Cheng Lee, New Taipei, TW;
Yueh-Hung Ho, New Taipei, TW;
Chih-Wei Lin, New Taipei, TW;
Chen-Hua Hsi, New Taipei, TW;
Assignee:
LUXSENTEK MICROELECTRONICS CORP., New Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/46 (2006.01); G01J 1/44 (2006.01); G01J 1/42 (2006.01);
U.S. Cl.
CPC ...
G01J 1/46 (2013.01); G01J 1/4228 (2013.01); G01J 1/44 (2013.01); G01J 2001/444 (2013.01);
Abstract
The present invention provides a light sensor with dark current elimination. A dark current from a covered photodiode and a sensed current from a photodiode are respectively transformed to a dark voltage and a sensed voltage by a controlled integration circuit. A reverse capacitor receives the dark voltage and the sensed voltage to cancel out for each other, and outputs a corrected sensing voltage.