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. 05, 2005
Filed:
Feb. 24, 2004
Applicants:
Toshihiro Nakamura, Takatsuki, JP;
Kiyoto Ota, Takatsuki, JP;
Masahisa Iida, Takatsuki, JP;
Kenichi Origasa, Takatsuki, JP;
Inventors:
Toshihiro Nakamura, Takatsuki, JP;
Kiyoto Ota, Takatsuki, JP;
Masahisa Iida, Takatsuki, JP;
Kenichi Origasa, Takatsuki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C007/00 ;
U.S. Cl.
CPC ...
Abstract
There is provided a semiconductor memory device in which a bit line precharge operation is increased in speed, and a layout area is reduced. P-channel transistors () that function as switches are provided in a precharge voltage pumping circuit () included in a bit line precharge voltage generation unit. This enhances a pumping efficiency, and reduces a capacitance area of a pumping capacitor ().