Patent ID: 9589843
Date: 2017-03-07
CPC Classifications: H01L

Claim:
1. A method for manufacturing a semiconductor device, comprising the steps of: (a) providing a lead frame including a chip mounting part having a semiconductor chip mounted thereover, and a plurality of leads electrically coupled with a plurality of electrodes formed at the main surface of the semiconductor chip via a plurality of wires, respectively, and (b) sealing the semiconductor chip with a resin, and forming a sealing body, wherein the step (b) includes the steps of: (b1) providing a mold die having a cavity, a gate part communicating with the cavity, and a vent part provided opposite to the gate part via the cavity in such a manner as to communicate with the cavity, and extending in a first direction, (b2) arranging the lead frame between a first die and a second die forming the mold die such that the semiconductor chip is situated in the cavity of the mold die, and clamping the lead frame by the first die and the second die, (b3) after the step (b2), feeding the resin into the cavity, and (b4) after the step (b3), separating the first die and the second die from each other, and extracting the lead frame from the mold die, wherein the lead frame has a first through hole provided at a position overlapping the cavity in the step (b2), and a second through hole provided outside the first through hole with respect to the chip mounting part, and separated from the first through hole, and provided at a position overlapping the vent part in the step (b2), and wherein in a second direction crossing with the first direction, the length of the second through hole is larger than the length of the vent part.