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:
Sep. 20, 2016
Filed:
Aug. 19, 2014
Stmicroelectronics (Crolles 2) Sas, Crolles, FR;
Stmicroelectronics SA, Montrouge, FR;
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Michel Marty, Varces, FR;
Sebastien Jouan, Crolles, FR;
Laurent Frey, Grenoble, FR;
Salim Boutami, Grenoble, FR;
STMicroelectronics (Crolles 2) SAS, Crolles, FR;
STMicroelectronics SA, Montrouge, FR;
Commissariat A L'Energie Atomique et aux Energies Alternatives, Paris, FR;
Abstract
A photodiode includes at least one central pad arranged on a light-receiving surface of a photodiode semiconductor substrate. The pad is made of a first material and includes lateral sidewalls surrounded by a spacer made of a second material having a different optical index than the first material. The lateral dimensions of the pad are smaller than an operating wavelength of the photodiode. Both the first and second materials are transparent to that operating wavelength. The pads and spacers are formed at a same time gate electrodes and sidewall spacers of MOS transistors are formed.