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. 13, 2002
Filed:
Sep. 07, 2001
Morifumi Ohno, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A chain ferroelectric RAM includes a memory cell array having a plurality of memory cell, which connected in series between bit line and a plate line. Each memory cell includes a first ferroelectric capacitor having upper and lower electrodes between which a ferroelectric layer is provided; a second ferroelectric capacitor having upper and lower electrodes between which a ferroelectric layer is provided; and a transistor connected to the upper and lower electrodes of the first and second ferroelectric capacitors. The upper electrode of the first ferroelectric capacitor is connected to the lower electrode of the second ferroelectric capacitor, and the lower electrode of the first ferroelectric capacitor is connected to the upper electrode of the second ferroelectric capacitor in a complimentary manner.