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:
May. 26, 2009
Filed:
Dec. 21, 2005
Kyung Pil Hwang, Seoul, KR;
Hyung Seok Kim, Seoul, KR;
Keum Hwan Noh, Seoul, KR;
Ju IN Kim, Incheon-si, KR;
Min Kyu Lee, Icheon-si, KR;
Seok Jin Joo, Seoul, KR;
Sook Kyung Kim, Icheon-si, KR;
Kyung Pil Hwang, Seoul, KR;
Hyung Seok Kim, Seoul, KR;
Keum Hwan Noh, Seoul, KR;
Ju In Kim, Incheon-si, KR;
Min Kyu Lee, Icheon-si, KR;
Seok Jin Joo, Seoul, KR;
Sook Kyung Kim, Icheon-si, KR;
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Abstract
Erase and program methods of a flash memory device including MLCs for increasing the program speed are described. In the erase method, MLCs are pre-programmed so that a voltage range in which threshold voltages of MLCs are distributed can be reduced. Therefore, a fail occurrence ratio can be reduced when erasing MLCs, the threshold voltage distribution of MLCs can be improved and an overall program time can be shortened in a subsequent program operation.