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:
May. 09, 2006
Filed:
Jan. 02, 2004
Lawrence A. Clevenger, LaGrangeville, NY (US);
Louis L. Hsu, Fishkill, NY (US);
Carl J. Radens, LaGrangeville, NY (US);
Li-kong Wang, Montvale, NJ (US);
Kwong Hon Wong, Wappingers Falls, NY (US);
Lawrence A. Clevenger, LaGrangeville, NY (US);
Louis L. Hsu, Fishkill, NY (US);
Carl J. Radens, LaGrangeville, NY (US);
Li-Kong Wang, Montvale, NJ (US);
Kwong Hon Wong, Wappingers Falls, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and structure for a photodiode array comprising a plurality of photodiode cores, light sensing sidewalls along an exterior of the cores, logic circuitry above the cores, trenches separating the cores, and a transparent material in the trenches is disclosed. With the invention, the sidewalls are perpendicular to the surface of the photodiode that receives incident light. The light sensing sidewalls comprise a junction region that causes electron transfer when struck with light. The sidewalls comprise four vertical sidewalls around each island core. The logic circuitry blocks light from the core so light is primarily only sensed by the sidewalls.