Patent ID: 9041096
Filing Date: 2015-05-26
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first conductive type base layer; a plurality of second conductive type base layers selectively formed on a surface of the first conductive type base layer; a first conductive type source layer that is formed in an inner area of the respective second conductive type base layers at a gap from a periphery of the respective second conductive type base layers, the first conductive type source layer forming a channel region with said periphery; a gate electrode formed so as to face the channel region across a gate insulating film; a plurality of second conductive type columnar regions that are formed in the first conductive type base layer so as to continue from the respective second conductive type base layers and that are arranged at a prescribed first pitch with respect to the second conductive type base layers that are adjacent to each other; and a plurality of second conductive type collector layers that are selectively formed on a rear surface of the first conductive type base layer and that are arranged at a prescribed second pitch, the second pitch being larger than the first pitch of the second conductive type columnar regions.