Patent ID: 7719841

Claim:
A semiconductor device comprising: a wiring board including a single conductive layer; a semiconductor element mounted on the wiring board; an element electrode provided on the semiconductor element; a board electrode provided in the wiring board and electrically connected to the element electrode; a connector section provided at an end of the wiring board to receive an external signal containing a first potential and a second potential to drive the semiconductor element; at least one electrically and thermally conductive radiator plate located adjacent to the semiconductor device for dissipating heat from the semiconductor device, and used to transmit the first potential and/or the second potential at least one relay electrode section provided in the wiring board; and at least one connecting member located between the radiator plate and the relay electrode section to electrically connect the radiator plate and the relay electrode section together, wherein the wiring board is structured so that the first potential and/or the second potential received by the connector section is transmitted through a path comprising the radiator plate, the relay electrode section, the connecting member, and the board electrode to the element electrode on the semiconductor element.