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. 20, 2010
Filed:
Jun. 04, 2008
Applicant:
Shinpei Iijima, Tokyo, JP;
Inventor:
Shinpei Iijima, Tokyo, JP;
Assignee:
Elpida Memory, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 31/00 (2006.01); H01L 21/336 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes an active area isolated by an isolation area on a semiconductor substrate. A transistor includes a gate electrode extending across the active area, source/drain regions formed in the active area on both sides of the gate electrode, and impurity-containing contact plugs connected to the source/drain regions. The source/drain regions are formed by thermal diffusion of impurities from the impurity-containing contact plugs toward the active area.