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. 05, 2005
Filed:
Jan. 09, 2004
Applicants:
Akira Matumoto, Kawasaki, JP;
Tadashi Fukase, Kawasaki, JP;
Manabu Iguchi, Kawasaki, JP;
Masahiro Komuro, Kawasaki, JP;
Inventors:
Akira Matumoto, Kawasaki, JP;
Tadashi Fukase, Kawasaki, JP;
Manabu Iguchi, Kawasaki, JP;
Masahiro Komuro, Kawasaki, JP;
Assignee:
NEC Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L023/58 ;
U.S. Cl.
CPC ...
Abstract
In a semiconductor device, a circuit unit is formed in an inside portion, and seal rings that enclose the inside portion that are composed of walls of metal layers are formed around the periphery. In the corners, the seal rings include linear parts that extend inwardly in addition to the linear parts that extend along the periphery, whereby the seal rings are formed in a planar pattern having small rectangular planar patterns in each corner.