Patent ID: 7781262

Claim:
A method of producing a semiconductor device in which chips are resin-molded, comprising: a step of preparing frames having front and back surfaces and die pads; a step of preparing an insulation resin sheet having a first and a second surfaces; a step of preparing a resin-sealing mold having cap pins attached thereto; a step of mounting the resin sheet inside the resin-sealing mold in such a manner that the second surface of the resin sheet contacts an inner bottom surface of the resin-sealing mold; a step of mounting power chips on the surfaces of the die pads; a step of positioning the frames on the first surface of the resin sheet in such a manner that the back surfaces of the die pads contact the first surface of the resin sheet; a fixing step of pressing the die pads toward the resin sheet using the cap pins and fixing the die pads; a hardening step of injecting a sealing resin in the resin-sealing mold and hardening the sealing resin; and a step of removing the semiconductor device in which the power chips are molded with the sealing resin out from the resin-sealing mold.