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:
Nov. 09, 2010
Filed:
Aug. 12, 2008
Applicant:
Royce Lowis, Stockport, GB;
Inventor:
Royce Lowis, Stockport, GB;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device has a channel termination region for using a trenchfilled with field oxideand a channel stopper ringwhich extends from the first major surfacethrough p-wellalong the outer edgeof the trenchunder the trench and extends passed the inner edgeof the trench. This asymmetric channel stopper ring provides an effective termination to the channelwhich can extend as far as the trench