Patent ID: 8664692

Claim:
A semiconductor device comprising: a first electrode; a first conductivity type cathode layer provided on the first electrode; a first conductivity type base layer provided on the first conductivity type cathode layer; a second conductivity type anode layer provided on the first conductivity type base layer; a second conductivity type semiconductor layer provided on the second conductivity type anode layer; a first conductivity type semiconductor layer provided on the second conductivity type anode layer, being contiguous to the second conductivity type semiconductor layer in a first direction, and extending on a surface of the second conductivity type anode layer in a second direction that intersects perpendicularly to the first direction; a buried body extending in the first direction and including a bottom portion and a sidewall portion, the bottom portion being in contact with the first conductivity type base layer, the sidewall portion being in contact with the first conductivity type base layer, the second conductivity type anode layer, the second conductivity type semiconductor layer and the first conductivity type semiconductor layer; and a second electrode provided on the first conductivity type semiconductor layer and the second conductivity type semiconductor layer.