Patent ID: 8426944
Filing Date: 2013-04-23
Classification: H01L

Abstract:
1. An insulated gate bipolar transistor comprising: a first conductive type drift layer; a plurality of gate electrodes formed at a principle surface portion of the drift layer so as to extend in a first direction and arranged in parallel with each other in a second direction perpendicular to the first direction; a plurality of second conductive type base regions each formed in a between-gate region sandwiched by and between a pair of adjacent gate electrodes; a first conductive type emitter region formed in the base region so as to be adjacent to the gate electrodes; an emitter electrode connected to the emitter region; a second conductive type collector layer formed at the other side of the principle surface portion of the drift layer; a collector electrode connected to the collector layer, an interlayer insulation film which is located over and covers the gate electrode; and a hole discharge control region formed only on a side surface of the base region in the second direction, wherein the plurality of second conductive type base regions are separated with each other in the first direction by the drift layer, and wherein the drift layer and the emitter electrode are insulated by the interlayer insulation film.