Patent ID: 6339257
Filing Date: 2002-01-15
Classification: H01L

Abstract:
A semiconductor device, comprising:an interconnection layer including aluminum and formed on a semiconductor substrate; a first insulating layer including a first hole having a sidewall and allowing a part of a surface of said interconnection layer to be exposed and formed to cover said interconnection layer; a first intermediate layer containing titanium formed in contact with said interconnection layer and covering a surface of said first insulating layer, said sidewall of said first hole, and said exposed part of the surface of said interconnection layer; a second intermediate layer including titanium nitride and in contact with said first intermediate layer; a sidewall conductive layer including tungsten and formed on said sidewall of said first hole with said first and second intermediate layers interposed; and a bonding pad electrode layer including aluminum formed in said first hole to be connected to the surface of said interconnection layer with said first and second intermediate layers interposed and in contact with said second intermediate layer.