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:
Aug. 29, 2006
Filed:
Feb. 06, 2004
Katsuji Satomi, Osaka, JP;
Hironori Akamatsu, Hirakata, JP;
Katsuji Satomi, Osaka, JP;
Hironori Akamatsu, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A semiconductor memory device may include: (1) a word line drive circuit, having a drive transistor disposed between a positive power supply and a word line, (2) a circuit for turning the drive transistor OFF after an output of the word line drive circuit reaches a high level, and (3) a word-line-voltage increasing circuit for increasing a voltage of the word line after the drive transistor turns OFF. The word-line-voltage increasing circuit includes a coupling capacitor, one end of which is connected to the word line, and a capacitor drive circuit, an output end of which is connected to the other end of the coupling capacitor. The capacitor drive circuit switches its output from a low level to a high level at a timing when the drive transistor is OFF.