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:
Jan. 05, 2016
Filed:
Aug. 21, 2014
Stmicroelectronics SA, Montrouge, FR;
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Laurent Frey, Grenoble, FR;
Michel Marty, Varces, FR;
STMicroelectronics SA, Montrouge, FR;
Commissariat A L'Energie Atomique et aux Energies Alternatives, Paris, FR;
Abstract
A back side illumination photodiode includes a light-receiving back side surface of a semiconductor material substrate. An area of the light-receiving back side surface includes a recess. The recess is filled with a material having an optical index that is lower than an optical index of the semiconductor material substrate. Both the substrate and the filling material are transparent to an operating wavelength of the photodiode. The recess may be formed to have a ring shape.