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:
Dec. 09, 2003
Filed:
Apr. 09, 2002
Koji Taniguchi, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor memory device of the present invention has a memory array structure wherein a plurality of word lines and a plurality of bit lines for selecting a predetermined memory cell are arranged to intersect with one another, and includes two memory cells (e.g., MC and MC ) constituting one bit and a sense amplifier electrically connected to the both memory cells through the bit lines. The word line (e.g., WL A) electrically connected to one (e.g., MC ) of the two memory cells constituting one bit and the word line (e.g., WL B) electrically connected to the other memory cell (e.g., MC ) are arranged opposite each other across the sense amplifier. Thus, a twin-cell type semiconductor memory device capable of reducing a plane area occupied by a memory cell part while maintaining good retention characteristics.