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:
Feb. 27, 1996
Filed:
Oct. 24, 1994
Masayoshi Omura, Saitama, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Symetrix Corporation, Colorado Springs, CO (US);
Abstract
A first ferroelectric capacitor has a ferroelectric member having a film thickness and an area, and electrodes formed on both major surfaces of the member, respectively. Thus, the first ferroelectric capacitor has a polarization. A second ferroelectric capacitor has a ferroelectric member having a film thickness and an area, and electrodes formed on both major surfaces of the member, respectively. Thus, the second ferroelectric capacitor has a polarization. The first and second ferroelectric capacitors are connected parallel to each other, thereby forming a ferroelectric memory device. Since the ferroelectric memory device uses the synthesized hysteresis characteristics of the two ferroelectric capacitors of different coercive field values, it can use multi-value data, and perform nondestructive readout of data stored in the capacitors.