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:
Apr. 11, 1989
Filed:
Feb. 09, 1987
Applicant:
Inventors:
Yutaka Hayashi, Ibarakiken, JP;
Yoshikazu Kojima, Tokyo, JP;
Masaaki Kamiya, Tokyo, JP;
Kojiro Tanaka, Tokyo, JP;
Assignees:
Kogyo Gizyutsuin, Tokyo, JP;
Seiko Instruments & Electronics Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365185 ;
Abstract
A floating gate type semiconductor non-volatile memory injects carriers from a carrier supply region to a floating gate by a phenomenon called 'punch-through' injection in which a space charge region is formed in a semiconductor substrate between the carrier supply region and a carrier injection region so as to accelerate the carriers and inject them into the floating gate without forwardly biasing the carrier injection region or the substrate.