Patent ID: 8536641
Filing Date: 2013-09-17
Classification: H01L

Abstract:
1. A semiconductor device comprising a substrate comprising a semiconductor material and having a surface that defines a surface normal direction, said substrate including: a P-N junction comprising an interface between a first region including a first dopant type, so as to have a first conductivity type, and a second region including a second dopant type, so as to have a second conductivity type; a termination extension region disposed adjacent to said P-N junction, said termination extension region having an effective concentration of the second dopant type that is generally an effective concentration of the second dopant type in said second doped region; and an adjust region disposed adjacent to said surface and between said surface and at least part of said termination extension region, wherein an effective concentration of the second dopant type generally decreases when moving from said termination extension region into said adjust region along the surface normal direction.