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. 07, 1992
Filed:
Apr. 30, 1990
Kazuhiro Komori, Kodaira, JP;
Satoshi Meguro, Hinode, JP;
Takaaki Hagiwara, Hinode, JP;
Hitoshi Kume, Musashino, JP;
Toshihisa Tsukada, Musashino, JP;
Hideaki Yamamoto, Tokorozawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
This invention discloses an EEPROM which increases an erasing voltage V.sub.pp to be applied during a data write cycle by increasing an avalanche breakdown voltage between a source region and a semiconductor substrate in the memory cell transistor in order to improve the erasing efficiency, and employs a structure which strengthens the electric field at the edge of a drain region in order to let hot carriers be easily generated and to thereby improve writing efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile