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:
Aug. 03, 2021
Filed:
Jan. 13, 2020
Applicants:
Stmicroelectronics (Research & Development) Limited, Marlow, GB;
Stmicroelectronics (Grenoble 2) Sas, Grenoble, FR;
Inventors:
Jeffrey M. Raynor, Edinburgh, GB;
Sophie Taupin, Saint Egreve, FR;
Jean-Jacques Rouger, Saint Pierre de Mesage, FR;
Pascal Mellot, Lans en Vercors, FR;
Assignees:
STMicroelectronics (Research & Development) Limited, Marlow, GB;
STMicroelectronics (Grenoble 2) SAS, Grenoble, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01); G01J 1/42 (2006.01); G01J 1/44 (2006.01); H01L 23/58 (2006.01); H01L 27/144 (2006.01); H01L 31/02 (2006.01);
U.S. Cl.
CPC ...
G01J 1/4204 (2013.01); G01J 1/44 (2013.01); H01L 23/585 (2013.01); H01L 27/1443 (2013.01); H01L 27/1446 (2013.01); H01L 31/02019 (2013.01); G01J 2001/446 (2013.01); G01J 2001/448 (2013.01);
Abstract
An optical sensor includes pixels. Each pixel has a photodetector and a semiconductor guard ring around the photodetector. The photodetector and the semiconductor guard ring are dimensioned so that a fill factor of the pixel is less than or equal to 50%.