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:
Mar. 01, 2005
Filed:
Feb. 26, 2003
Masashi Agata, Osaka, JP;
Kazunari Takahashi, Shiga, JP;
Masashi Agata, Osaka, JP;
Kazunari Takahashi, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The semiconductor memory device includes: a memory cell including a capacitor having a charge storage node and a first MIS transistor and a second MIS transistor each having a source connected to the charge storage node; a first word line and a first bit line respectively connected to the gate and the drain of the first MIS transistor; a second word line and a second bit line respectively connected to the gate and the drain of the second MIS transistor; and a timer circuit for generating a periodic signal having a predetermined period. The first word line or the second word line is activated in response to the periodic signal.