Patent ID: 7863107
Filing Date: 2011-01-04
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising the steps of: (a) providing a lead frame which has a die pad part, and a first lead arranged near the die pad part; (b) providing a semiconductor chip in which a first pad is formed in a front surface; (c) mounting the semiconductor chip over the die pad part; (d) electrically connecting one end of a metallic ribbon to a front surface of the first pad by a wedge- bonding method using supersonic vibration; (e) electrically connecting another end of the metallic ribbon to a front surface of the first lead by the wedge-bonding method using supersonic vibration; and (f) sealing the semiconductor chip, the first lead, and the metallic ribbon with a resin; wherein in steps (d) and (e), a point of a wedge tool which applies the supersonic vibration to the metallic ribbon over the front surface of the first pad and the front surface of the first lead is divided into a first branch and a second branch by a groove extending along a pressing surface of the wedge tool in a first direction which intersects perpendicularly with a second direction which extends toward the first lead from the first pad, wherein in step (d), the one end of the metallic ribbon is electrically connected to the front surface of the first pad using the first and second branches of the wedge tool, and wherein in step (e), the other end of the metallic ribbon is electrically connected to the front surface of the first lead using the first branch but not the second branch of the wedge tool.