Patent ID: 9184231
Filing Date: 2015-11-10
Classification: H01L,H02M,H02P

Abstract:
1. A semiconductor device, comprising: a first conductivity-type drain layer; a first conductivity-type base layer provided on the first conductivity-type drain layer; a second conductivity-type base layer partially formed in a surface layer portion of the first conductivity-type base layer; a first conductivity-type source layer partially formed in a surface layer portion of the second conductivity-type base layer; a gate insulation film formed on a surface of the second conductivity-type base layer between the first conductivity-type source layer and the first conductivity-type base layer; a gate electrode formed on the gate insulation film to face the second conductivity-type base layer between the first conductivity-type source layer and the first conductivity-type base layer across the gate insulation film; a second conductivity-type column layer formed within the first conductivity-type base layer to extend from the second conductivity-type base layer toward the first conductivity-type drain layer; a first dose region arranged between the second conductivity-type column layer and the first conductivity-type drain layer within the first conductivity-type base layer, the first dose region including first charged particles converted to donors; a second dose region including second charged particles heavier than the first charged particles, and locally formed within the first dose region; a source electrode electrically connected to the first conductivity-type source layer; and a drain electrode electrically connected to the first conductivity-type drain layer.