Patent ID: 9595603
Date: 2017-03-14
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising a semiconductor layer and a trench gate portion that extends toward a deep portion from a front surface of the semiconductor layer, wherein the semiconductor layer comprises: the semiconductor layer comprises an island region surrounded by the trench gate portion in a plan view, the trench gate portion includes a first side surface that is in contact with the island region and a second side surface that is in contact with the island region and is different from the first side surface, the first conductivity type contact region includes a first contact region that is in contact with the first side surface in the island region and a second contact region that is in contact with the second side surface in the island region, and the second conductivity type contact region is in contact with the trench gate portion at a position between the first contact region and the second contact region.