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. 14, 2000
Filed:
Feb. 24, 1999
Hidekazu Takata, Nara, JP;
Hidehiko Tanaka, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor memory device includes: a plurality of word lines; a plurality of drive lines; a word line driving section for activating one of the plurality of word lines in accordance with a row address; a column selection section for, in accordance with a column address, selecting one of a plurality of ferroelectric memory cells coupled to the activated word line; a plate driving signal application section for applying a plate driving signal to at least a selected one of the plurality of drive lines, the at least one selected drive line being associated with the activated word line; and a switching section for coupling or detaching the plurality of ferroelectric memory cells to or from the at least one selected drive line. The column selection section controls the switching section so that only the selected ferroelectric memory cell is coupled to the at least one selected drive line.