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. 08, 2013
Filed:
Feb. 14, 2011
Applicant:
Takamitsu Onda, Tokyo, JP;
Inventor:
Takamitsu Onda, Tokyo, JP;
Assignee:
Elpida Memory, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/088 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes: a substrate; a transistor that has a ring-shaped gate electrode formed on the substrate; a plurality of external dummy electrodes that are arranged outside the gate electrode and are formed in the same layer as the gate electrode; and at least one internal dummy electrode that is arranged inside the gate electrode and is formed in the same layer as the gate electrode.