Patent ID: 9627344
Date: 2017-04-18
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a semiconductor chip including: a first lead on which the semiconductor chip is mounted; a second lead separated from the first lead; and a bonding wire bonded to the connection surface of the bonding layer and the second lead, wherein the barrier film has an end surface positioned farther inside than the side surface of the copper wiring such that a level difference along a surface of the semiconductor substrate is formed between the end surface of the barrier film and the side surface of the copper wiring, the side protecting layer has a thickness thinner than a distance from the upper surface of the copper wiring to the connection surface of the bonding layer, a portion of the side protecting layer is disposed in the level difference while reaching the at least one insulating layer, and the at least one wiring layer is disposed directly beneath a connection portion of the connection surface to which the bonding wire is bonded.