Patent ID: 9704844
Date: 2017-07-11
CPC Classifications: H01L

Claim:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) providing a lead frame having a plurality of product areas, each of the plurality of product areas including a first chip mounting portion, a second chip mounting portion, a first lead and a second lead; (b) after the step (a), forming first and second conductive materials over a first upper surface of the first chip mounting portion and a second upper surface of the second chip mounting portion, respectively; (c) after the step (b), mounting first and second semiconductor chips over the first and second upper surfaces via the first and second conductive materials, respectively; (d) after the step (c), forming a third conductive material over a first electrode pad of the first semiconductor chip; (e) after the step (d), mounting a metal plate over the first electrode pad via the third conductive material, and electrically connecting the first electrode pad with the first lead via the metal plate; (f) after the step (e), heating the lead frame including the first, second and third conductive materials; (g) after the step (f), attaching a tape to a rear surface of the lead frame including a first lower surface of the first chip mounting portion, which is opposite to the first upper surface, and a second lower surface of the second chip mounting portion, which is opposite to the second upper surface; (h) after the step (g), electrically connecting a second electrode pad of the first semiconductor chip with a third electrode pad of the second semiconductor chip via a first wire, and electrically connecting a fourth electrode pad of the second semiconductor chip with the second lead via a second wire; and (i) after the step (h), sealing a front surface of the lead frame, which is opposite to the rear surface and including the plurality of product areas, with resin, wherein a reflow temperature of each of the first, second and third conductive materials is higher than a heat-resisting temperature of the tape, wherein, in the step (f), the lead frame is heated at a temperature higher than the heat-resisting temperature of the tape, and wherein, in the step (g), the tape is attached to the first lower surface and the second lower surface by contacting a support member with the metal plate and also by pressing the metal plate with the support member, while not contacting the support member with the second semiconductor chip.