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:
Nov. 12, 2019
Filed:
May. 16, 2019
Applicant:
Stmicroelectronics (Crolles 2) Sas, Crolles, FR;
Inventors:
Axel Crocherie, Grenoble, FR;
Pierre Emmanuel Marie Malinge, Bernin, FR;
Assignee:
STMicroelectronics (Crolles 2) SAS, Crolles, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14625 (2013.01); H01L 27/1463 (2013.01); H01L 27/1464 (2013.01); H01L 27/14627 (2013.01); H01L 27/14629 (2013.01); H01L 27/14636 (2013.01); H01L 27/14649 (2013.01); H01L 27/14685 (2013.01);
Abstract
An integrated image sensor with backside illumination includes a pixel. The pixel is formed by a photodiode within an active semiconductor region having a first face and a second face. A converging lens, lying in front of the first face of the active region, directs received light rays towards a central zone of the active region. At least one diffracting element, having a refractive index different from a refractive index of the active region, is provided at least partly aligned with the central zone at one of the first and second faces.