Patent ID: 8017440

Claim:
A manufacturing method for semiconductor devices comprising the steps of: (a) preparing a first frame having a chip placement portion, a second frame having a first lead terminal portion, and a first semiconductor chip having a first main surface and a second main surface located on the opposite side to the first main surface; (b) setting the first frame over an assembly jig; (c) setting the first semiconductor chip over the chip placement portion of the first frame with first solder in between so that the first main surface of the first semiconductor chip is opposed to the chip placement portion; (d) setting the second frame over the assembly jig so that the first lead terminal portion is set over the second main surface of the first semiconductor chip with second solder in between; (e) after the steps (a), (b), (c), and (d), carrying out solder reflow heat treatment with the first and second frames set over the assembly jig to join together the first main surface of the first semiconductor chip and the chip placement portion of the first frame through the first solder and join together the second main surface of the first semiconductor chip and the first lead terminal portion of the second frame through the second solder; and (f) after the step (e), using a lower die and an upper die to form an encapsulation resin portion sealing the first semiconductor chip, the chip placement portion of the first frame, and the first lead terminal portion of the second frame, wherein the lower die includes a first face for setting the chip placement portion of the first frame and a second face for setting part of the second frame, located in a position adjacent to a cavity formed by the lower die and the upper die and protruded beyond the first face, wherein at the step (f), the chip placement portion of the first frame is set over the first face of the lower die, part of the second frame is sandwiched between the second face of the lower die and the upper die, and in this state, resin material for the formation of the encapsulation resin portion is injected into the cavity formed by the lower die and the upper die, the encapsulation resin portion being thereby formed, wherein the assembly jig includes a first supporting face over which the chip placement portion of the first frame is set and a second supporting face for supporting the second frame set over the assembly jig, protruded beyond the first supporting face, wherein a height of the second face relative to the first face in the lower die and a height of the second supporting face relative to the first supporting face in the assembly jig are identical with each other; and wherein a portion of the second frame sandwiched between the second face of the lower die and the upper die at the step (f) is set over the second supporting face of the assembly jig at the step (d).