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. 23, 2001
Filed:
Mar. 17, 1999
Applicant:
Inventors:
Chin-Hsi Lin, Hsinchu, TW;
Ful-Long Ni, Hsinchu, TW;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/604 ;
U.S. Cl.
CPC ...
G11C 1/604 ;
Abstract
An electronically programmable semiconductor memory device that is able to provide stepped wordline voltages is disclosed. During programming of multi-level threshold voltages into memory cells within the electronically programmable semiconductor memory device, the stepped wordline voltages are used. The stepping through the wordline voltages is controlled by source-side voltage monitoring of the memory cells during programming. Threshold voltages of the memory cells are able to be programmed to three or more distinct voltage levels.