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. 02, 2004
Filed:
Jan. 27, 2003
Yasuyuki Ito, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A semiconductor memory device able to increase the effective area of a capacitor in a memory cell and ensure a sufficient amount of charge contained in a read signal while maintaining the smallest cell area and a method for producing the same, wherein a first node electrode, a first ferroelectric film, and plate electrodes form four ferroelectric capacitors, plate electrodes, a second ferroelectric film, and a second node electrode form other four ferroelectric capacitors, the first node electrode is electrically connected to the second node electrode, a capacitor below a plate electrode is connected in parallel with the capacitor above the plate electrode, and these two capacitors connected in parallel form a memory cell storing 1 bit of data.