Patent ID: 9306047
Filing Date: 2016-04-05
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a first emitter layer of a first conductivity type; a drift layer of a second conductivity type, adjacent to the first emitter layer; a channel layer of the first conductivity type, adjacent to the drift layer; a second emitter layer of the second conductivity type, adjacent to the channel layer; a collector electrode electrically coupled to the first emitter layer; an emitter electrode electrically coupled to the second emitter layer; a first trench-gate electrode for controlling on and off of an electric current flowing between the collector electrode and the emitter electrode, and a second trench-gate electrode for controlling a turn-off power loss, the semiconductor device including a thyristor unit made up of the first emitter layer, the drift layer, the channel layer, and the second emitter layer, wherein the electric current has saturation characteristics in a short circuit state.