Patent ID: 6727590
Filing Date: 2004-04-27
Classification: H01L

Abstract:
A semiconductor device comprising a multilayer interconnection structure in which a plurality of interconnection layers are formed in an insulating film,said multilayer interconnection structure having, a first metal film made of a first material and functioning as a first interconnection belonging to an interconnection layer other than an uppermost interconnection layer, a second metal film made of a second material and functioning as a second interconnection belonging to the uppermost interconnection layer, said second material having a lower resistance and being more susceptible to oxidation than said first material, and a third metal film made of said first material, belonging to an interconnection layer other than the uppermost interconnection layer, and functioning as a bonding pad, said semiconductor device further comprising, an opening formed in said insulating film and having its bottom defined by said third metal film, and a bonding wire connected to said third metal film through said opening.