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, 1998
Filed:
Dec. 23, 1996
Applicant:
Inventors:
Loren T Lancaster, Colorado Springs, CO (US);
Ryan T Hirose, Colorado Springs, CO (US);
Assignee:
NVX Corporation, Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
3651853 ; 36518524 ; 36518518 ; 36518529 ;
Abstract
A method and structure for preventing over erasure in non-volatile memory cells uses simultaneous erase and program current injections which offset one another. These currents come from two separate injection points within the non-volatile memory transistor and are dominant at different points during the erase operation. The first occurring current erases the non-volatile device and the second prevents over erasure.