Patent ID: 8686435
Filing Date: 2014-04-01
Classification: H01L

Abstract:
1. A silicon carbide semiconductor device comprising: a substrate made of silicon carbide having a hexagonal crystal structure and having a main surface; a silicon carbide layer epitaxially formed on said main surface of said substrate, said silicon carbide layer being provided with a trench having a side wall inclined relative to said main surface, said side wall having an off angle of not less than 50° and not more than 65° relative to a {0001} plane; a gate insulating film provided on said side wall of said silicon carbide layer; and a gate electrode provided on said gate insulating film, said silicon carbide layer including a body region having a first conductivity type and facing said gate electrode with said gate insulating film being interposed therebetween, a channel region formed at a surface of said body region along said side wall, and a pair of regions separated from each other by said body region and having a second conductivity type, said body region having an impurity density of 5×10