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:
Apr. 07, 2015
Filed:
Sep. 06, 2012
Applicant:
Yoon Soo Jang, Chungcheongbuk-do, KR;
Inventor:
Yoon Soo Jang, Chungcheongbuk-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01); G11C 16/16 (2006.01); H01L 27/115 (2006.01); H01L 29/792 (2006.01);
U.S. Cl.
CPC ...
G11C 16/0483 (2013.01); G11C 16/16 (2013.01); H01L 27/1157 (2013.01); H01L 27/11582 (2013.01); H01L 29/7926 (2013.01);
Abstract
A semiconductor memory device is operated by forming channels in a cell string including a plurality of memory cells and coupled between a bit line and a source line, applying first and second erase voltages having different levels to the channels through the bit line and the source line, respectively, and applying a first word line voltage to at least one word line among word lines coupled to the plurality of memory cells.