Patent ID: 7215020

Claim:
A semiconductor device comprising: a semiconductor chip; a first metal plate disposed on a first side of the chip through a first solder layer; a second metal plate disposed on a second side of the chip through a second solder layer, wherein the first side of the chip is opposite to the second side of the chip; a third metal plate disposed on the second metal plate through a third solder layer; supporting means for holding at least one of distances between the chip and the first metal plate and between the chip and the second metal plate; and excess solder accommodation means for accommodating excess solder in a case where the third solder layer includes the excess solder, wherein the excess solder accommodation means is disposed in the third metal plate, and the excess solder accommodation means is a groove, which is disposed on a part of the third metal plate, and wherein the pan of the third metal plate corresponds to a peripheral edge of the second metal plate.