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:
Jul. 24, 2007
Filed:
Jan. 31, 2006
Applicant:
Ki-chul Chun, Gyeonggi-do, KR;
Inventor:
Ki-Chul Chun, Gyeonggi-do, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 (2006.01); G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Semiconductor memory devices having a negatively biased sub-word line scheme and methods of driving the same are disclosed. In a semiconductor memory device, NMOS transistors for pulling down a word line enable signal and a word line driving signal to a negative voltage are adjusted to a negative voltage. The negatively biased word line scheme may decrease influx of discharge current into the negative voltage source and decrease negative voltage fluctuations and associated noise.