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. 16, 2005
Filed:
Dec. 17, 2003
Applicants:
Wataru Yokozeki, Kunitachi, JP;
Akio Itoh, Kawasaki, JP;
Inventors:
Wataru Yokozeki, Kunitachi, JP;
Akio Itoh, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L027/108 ; H01L029/76 ; H01L029/94 ; H01L031/119 ;
U.S. Cl.
CPC ...
Abstract
A nonvolatile semiconductor memory device includes a substrate, a plurality of transistors formed on the substrate to constitute a latch, a plate line, and a pair of capacitors each including a lower electrode, a ferroelectric film, and an upper electrode, the pair of capacitors being provided in a layer situated above the substrate and below a metal wiring layer in which the plate line is formed.