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:
Jun. 30, 1992
Filed:
Nov. 29, 1988
Applicant:
Inventor:
Yoshio Hirai, Tokyo, JP;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 235 ; 357-6 ;
Abstract
A semiconductor non-volatile memory for use in a computer or the like has an erasing electrode and a writing electrode provided adjacent to a floating gate electrode through respective tunnel oxide films. Rewriting of the memory is effected by applying a strong electric field to each of the tunnel oxide films through the erasing and writing electrodes only in the forward direction so that it is difficult for the tunnel oxide film to break down worn due to the application of the electric field.