Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takashi Kobayashi0
Susumu Iwamoto0
Date of Patent
January 18, 2011
0Patent Application Number
123651590
Date Filed
February 3, 2009
0Patent Primary Examiner
Patent abstract
A semiconductor device includes deep first field limiting rings, shallow second field limiting rings, insulation films covering each surface portion of each of the first and the second field limiting rings, and conductive field plates each in contact with a surface of each of the first and the second field limiting rings. Each of the field plates project over a surface of each of the insulation films between the first field limiting rings and the second field limiting rings.
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