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. 08, 2010
Filed:
Sep. 17, 2007
Applicant:
Jong Hyun Wang, Cheongju-si, KR;
Inventor:
Jong Hyun Wang, Cheongju-si, KR;
Assignee:
Hynix Semiconductor Inc., Icheon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A flash memory device and an erase method thereof are included. The erase method includes performing an erase operation of a memory cell block including a plurality of pages, performing an erase verify operation and storing unerased page information about a page including unerased memory cells that have not been normally erased, and performing an additional erase operation of the page including the unerased memory cells based on the unerased page information. When the unerased memory cells exist, the erase verify operation and the additional erase operation are performed repeatedly.