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. 12, 2007
Filed:
Oct. 07, 2004
Wook-hyun Kwon, Gyeonggi-do, KR;
Jung-in Han, Gyeonggi-do, KR;
Wook-Hyun Kwon, Gyeonggi-do, KR;
Jung-In Han, Gyeonggi-do, KR;
Abstract
Selective erase method for a flash memory device including a group of memory cells arranged in rows and columns include performing an erase operation on the group of memory cells and verifying the erase operation on the group of memory cells to determine threshold voltages of the memory cells. At least one row of memory cells including memory cells having a threshold voltage lower than a desired erase threshold voltage is identified. A further erase operation is performed on the group of memory cells excluding memory cells of the at least one row of memory cells including memory cells having a threshold voltage lower than a desired erase threshold voltage.