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:
Mar. 18, 2014
Filed:
Dec. 21, 2011
Applicants:
Francois Roy, Seyssins, FR;
Flavien Hirigoyen, Grenoble, FR;
Julien Michelot, Grenoble, FR;
Inventors:
Assignees:
STMicroelectronics (Crolles 2) SAS, Crolles, FR;
STMicroelectronics SA, Montrouge, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of fabricating an image sensor includes the steps of: forming at least two photosites in a semiconductor substrate; forming a trench between the photosites; forming a thin liner on at least the sidewalls of the trench; depositing a conductive material having a first refractive index in the trench; and forming a region surrounded by the conductive material and having a second refractive index lower than the first index of refraction within the conductive material in the trench.