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:
Oct. 19, 2004
Filed:
Oct. 29, 2002
Applicant:
Inventors:
Masaki Aoki, Kawasaki, JP;
Keizo Morita, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 1/122 ;
U.S. Cl.
CPC ...
G11C 1/122 ;
Abstract
A stacked FeRAM uses a structure where the bit line is formed above the ferroelectric capacitor. The word line is formed so that it moves away from the opposing other word line in areas near the contact plug with the relevant contact plug in between, and moves toward the other word line in areas not near the contact plug, and the contact hole is formed so that it is displaced alternately with respect to the longitudinal centerline of the relevant plate line.