Patent ID: 8253207

Claim:
An insulated gate semiconductor device comprising: a first semiconductor layer of a first general conductivity type; a second semiconductor layer of a second general conductivity type and provided on the first semiconductor layer; an active area provided in a surface of the second semiconductor layer, the active area being an area where transistor cells of an insulated gate semiconductor element are disposed; a diode provided outside the active area on the surface of the second semiconductor layer, the diode having a cathode connected to a gate electrode of the insulated gate semiconductor element and an anode connected to a terminal for connection to a gate drive circuit, the diode being connected to the gate electrode so that a current from the gate drive circuit flows from the anode to cathode of the diode so as to be supplied to the gate electrode; and a resistor provided outside the active area on the surface of the second semiconductor layer, the resistor being connected to both ends of the diode in parallel with the diode.