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:
Apr. 12, 2011
Filed:
Jun. 12, 2009
Applicant:
Masayoshi Saito, Tokyo, JP;
Inventor:
Masayoshi Saito, Tokyo, JP;
Assignee:
Elpida Memory, Inc, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/311 (2006.01); G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a semiconductor device including a capacitorless RAM. The semiconductor device includes a field effect transistor (FET) having a floating body structure. FET includes a channel body region arranged in a first region comprising a first semiconductor (e.g., p-SiGe) having a given band gap and a second region comprising a second semiconductor (e.g., n-Si) having a larger band gap than the first semiconductor.