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:
Feb. 23, 2010
Filed:
Aug. 17, 2005
Applicants:
Eli Lusky, Tel Aviv, IL;
Boaz Eitan, Ra'anana, IL;
Inventors:
Eli Lusky, Tel Aviv, IL;
Boaz Eitan, Ra'anana, IL;
Assignee:
Saifun Semiconductors Ltd., Netanya, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method includes determining groups of rows to erase together in order to minimize the margin loss associated with bake after a large number of program and erasure cycles. The method alternatively includes determining groups of rows to erase together to minimize the width of a resultant erase threshold voltage distribution, erasing the groups together, stopping erasure of a group when the group is erase verified and performing the step of erasing on those groups which were not previously erase verified.