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:
Sep. 07, 2004
Filed:
Jun. 11, 2002
Applicant:
Inventors:
Bryan Atwood, Kokubunji, JP;
Kazuo Yano, Hino, JP;
Tomoyuki Ishii, Hachioji, JP;
Taro Osabe, Kokubunji, JP;
Kazumasa Yanagisawa, Kokubunji, JP;
Takeshi Sakata, Hino, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/7108 ;
U.S. Cl.
CPC ...
H01L 2/7108 ;
Abstract
A high integration dynamic random access memory is provided by this invention. Furthermore, a write method is provided such that the cell size of two- and three-transistor gain cell memories is reduced. A dynamic memory incorporating a thin-channel transistor as the write element such that long data storage retention is achieved in the memory devices of this invention. A dynamic memory cell having low operating power and high density is also realized by this invention.