Patent ID: 9029995
Filing Date: 2015-05-12
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising the steps of: (a) preparing a first lead frame in which a plurality of first regions, each of which includes a chip mounting portion and a lead, are arranged in a matrix form; (b) mounting a semiconductor chip over an upper surface of the chip mounting portion via a first conductive adhesive material; (c) preparing a second lead frame in which a plurality of second regions, each of which includes a metal plate, are arranged in a matrix form at the same arrangement pitch as that of the first regions in the first lead frame; (d) mounting the metal plate on an electrode pad of the semiconductor chip and the lead via a second conductive adhesive material by overlapping the second lead frame over the first lead frame so that the metal plate is positioned over the electrode pad of the semiconductor chip; (e) after step (d), heating the first conductive adhesive material and the second conductive adhesive material at a first temperature; and (f) forming a sealing body by collectively sealing the first regions in the first lead frame to cover the semiconductor chips, wherein the metal plate includes a first portion coupled to the electrode pad of the semiconductor chip, a second portion coupled to the lead, and a third portion connecting the first portion and the second portion, wherein in step (d), the second lead frame is mounted over the first lead frame so that there is a first space between the first portion of the metal plate and the electrode pad of the semiconductor chip and the second conductive adhesive material is in contact with the first portion of the metal plate and the electrode pad of the semiconductor chip in the first space, and wherein step (e) is performed in a state in which the first space is maintained.