Patent ID: 9666501
Date: 2017-05-30
CPC Classifications: H01L

Claim:
1. A semiconductor device that is a resin-encapsulated semiconductor device having a resin package, comprising: a die pad having a front surface made of Cu; a semiconductor chip disposed so as to be opposed to the front surface of the die pad; a bonding layer provided between the die pad and the semiconductor chip; and a plurality of leads disposed around the die pad, that cooperate with the die pad to constitute a lead frame, and that each have a front surface that receives a bonding wire and a first side facing the die pad, wherein a cavity is defined on the front surface of each lead of the plurality of leads and has an inner projecting portion, and wherein a projecting portion is provided on the first side of each lead of the plurality of leads next to the cavity and has an upper surface continuous to the front surface of each lead of the plurality of leads and a lower surface that is inclined upwardly to contact the upper surface and define an angle between the lower surface and the upper surface thereof so that encapsulating resin flows smoothly along the upwardly inclined lower surface during resin encapsulating to provide the resin-encapsulated semiconductor device.