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. 28, 2015
Filed:
Dec. 23, 2011
Applicant:
Keun Kook Kim, Seoul, KR;
Inventor:
Keun Kook Kim, Seoul, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/06 (2006.01); G11C 11/4074 (2006.01); G11C 11/406 (2006.01); G11C 5/14 (2006.01);
U.S. Cl.
CPC ...
G11C 11/4074 (2013.01); G11C 11/40615 (2013.01); G11C 5/145 (2013.01); G11C 5/147 (2013.01);
Abstract
An internal voltage generation circuit includes: a selection unit configured to select one of first and second reference voltages as a selection reference voltage in response to a self refresh signal and a power-down mode signal and output the selection reference voltage; a driving signal generation unit configured to compare the selection reference voltage with a negative word line voltage applied to an unselected word line and generate a driving signal; and a driving unit configured to change the negative word line voltage in response to the driving signal.