Patent ID: 8236620

Claim:
A method of manufacturing a semiconductor device, comprising: preparing a lead frame, which includes a island having a first surface with an area for semiconductor chip, and a second surface opposing to the first surface; mounting the semiconductor chip on the first surface of the island; disposing the lead frame in a die including an upper die and a lower die such that the branch portion is sandwiched between the upper die and the lower die; and injecting a resin into the die to mold the semiconductor chip in the die, wherein the lead frame includes a hanger pin extending from the island along a first direction, and a branch portion branching from the hangar pin and extending along opposing sides of the hanger pin along the first direction, and the branch portion has a terminated portion and a bent portion on a side of the terminated portion, the branch portion between the terminated portion and the bent portion being inclined towards a side of the second surface of the island.