Patent ID: 8698195
Filing Date: 2014-04-15
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate having a first main surface and a second main surface opposed to each other; first and second insulated gate field effect transistor portions each having an insulated gate structure on a side of said first main surface and an emitter region of a first conductivity type formed in said first main surface, for allowing a main current to flow between said first main surface and said second main surface; a stabilizing plate portion formed in a region in said first main surface lying between said first and second insulated gate field effect transistor portions; and an emitter electrode provided on said first main surface, said stabilizing plate portion including a first stabilizing plate arranged closest to said first insulated gate field effect transistor portion and a second stabilizing plate arranged closest to said second insulated gate field effect transistor portion, said emitter electrode being electrically connected to said emitter region of each of said first and second insulated gate field effect transistor portions, electrically connected to each of said first and second stabilizing plates, and arranged on entire said first main surface lying between said first and second stabilizing plates with an insulating layer being interposed, wherein each of said first and second insulated gate field effect transistor portions includes a body contact region of a second conductivity type formed in the first main surface of said semiconductor substrate and a gate electrode, and said emitter electrode is electrically connected to each of said first and second stabilizing plates in an end region located on an end portion side in a longitudinal direction of said gate electrode in a plan view, relative to a region lying between a region in said first insulated gate field effect transistor portion where said emitter region and the body contact region are formed and a region in said second insulated gate field effect transistor portion where said emitter region and the body contact region are formed.