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:
Nov. 28, 2006
Filed:
May. 04, 2004
Applicants:
Sung-chul Lee, Cupertino, CA (US);
Sheung-hee Park, Pleasanton, CA (US);
Richard M. Fastow, Cupertino, CA (US);
Inventors:
Sung-Chul Lee, Cupertino, CA (US);
Sheung-Hee Park, Pleasanton, CA (US);
Richard M. Fastow, Cupertino, CA (US);
Assignee:
Spansion, LLC, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A new method for improving the accuracy of read-write operations in a multi-level flash memory cell is disclosed. The method reduces the read margin disturbance caused by the accumulation of holes at a tunneling oxide or tunneling oxide-silicon interface underneath a floating gate of the cell by applying a positive stress to the word line after a program-erase cycle.