Patent ID: 9299695
Filing Date: 2016-03-29
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a first base layer of a first conductivity type; a first semiconductor layer of the first conductivity type abutting the first base layer in a first direction, an impurity concentration of the first semiconductor layer being higher than an impurity concentration of the first base layer; a second semiconductor layer of a second conductivity type abutting the first base layer in the first direction, the second semiconductor layer being adjacent to and in direct contact with the first semiconductor layer in a second direction perpendicular to the first direction; a second base layer of the second conductivity type provided on the first semiconductor layer such that the first semiconductor layer is between the first and second base layers in the first direction; a first conductor layer provided adjacent to the first semiconductor layer, the second semiconductor layer, and the second base layer via a first insulating film, the first conductor layer being between the second base layer and the second semiconductor layer in the second direction and a bottom portion of the first conductor layer in the first direction being between the first semiconductor layer and the second semiconductor layer; a first electrode electrically connected to the first base layer; and a second electrode electrically connected to the second base layer, the first semiconductor layer directly contacting the second semiconductor layer at a position between the bottom portion and the first base layer.