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:
Dec. 25, 2012
Filed:
Jul. 12, 2010
Yi-fan Chang, Pingjhen, TW;
Cheng Ming Yih, Hsinchu, TW;
Su-chueh Lo, Hsinchu, TW;
Jian Shing Liu, Zhubei, TW;
Kuen-long Chang, Taipei, TW;
Chun-hsiung Hung, Hsinchu, TW;
Yi-Fan Chang, Pingjhen, TW;
Cheng Ming Yih, Hsinchu, TW;
Su-chueh Lo, Hsinchu, TW;
Jian Shing Liu, Zhubei, TW;
Kuen-Long Chang, Taipei, TW;
Chun-Hsiung Hung, Hsinchu, TW;
Macronix International Co., Ltd., Hsinchu, TW;
Abstract
Various discussed approaches include an improved grouping of edge word lines and center word lines of an erase group during erase verify and erase sub-operations of an erase operation. In another approach, changed voltage levels of edge word lines to address the over-erase issue of the erase group, and also improve erase time performance. Another approach uses dummy word lines.