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:
Dec. 11, 1990
Filed:
Oct. 23, 1989
Applicant:
Inventors:
Akiyoshi Kohno, Tokyo, JP;
Atsushi Mikoshiba, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; H01L / ; H04N / ;
U.S. Cl.
CPC ...
377 58 ; 357 24 ; 35821319 ;
Abstract
An image sensor is fabricated on an n type silicon substrate haivng a p type well overlain by a photo shield plate, and photo diodes are formed in the p type well and exposed through an opening in the photo shield plate to an optical image, in which the silicon substrate and the photo shield plate are biased so that punch through phenomena take place between the silicon substrate and the photo diodes for sweeping ineffectual electric charges into the substrate, thereby achieving an electronic shutter mode of operating without any complicate impurity profiles.