Patent ID: 8125023

Claim:
A vertical type power semiconductor device having a super junction structure, a first conductive type high concentration semiconductor substrate and a first conductive type region formed on the high concentration semiconductor substrate, and comprising a device section and a terminal section that is an outer peripheral portion of the device section, wherein the device section includes: a second conductive type first base region formed on a surface area of the first conductive type region, a first conductive type source region formed on a surface area of the first base region, a gate electrode formed on at least a partial region of the first base region with an insulating layer, a source electrode formed on the source region in contact with the first base region, a second conductive type device pillar layer extending from the first base region in a depth direction of the first conductive type region, and a drain electrode formed on a rear surface of the first conductive type high concentration semiconductor substrate, and the terminal section includes: a plurality of second conductive type terminal pillar layers extending from the surface of the first conductive type region in the depth direction of the first conductive type region, and a first conductive type impurity layer formed in a ring shape on a surface area of the terminal pillar layers including the outermost periphery of the plurality of terminal pillar layers.