Patent ID: 6737744
Filing Date: 2004-05-18
Classification: H01L

Abstract:
A semiconductor device comprising:a first insulating film provided on a surface of a substrate having a conductive area exposed at a part of the surface thereof; a first interlayer insulating film provided on the first insulating film; a second insulating film provided on the first interlayer insulating film; a via hole formed from an upper surface of the second insulating film to a bottom surface of the first insulating film; a third insulating film which is provided on the second insulating film and which has a different etching resistance from that of the second insulating film; a second interlayer insulating film which is provided on the third insulating film and which has a different etching resistance from that of the third insulating film; a wire trench which is provided from an upper surface of the second interlayer insulating film to the upper surface of the second insulating film and which is connected to the via hole at a part of the bottom of the wire trench; and a wire member which comprises a conductive material and is filled in the via hole and the wire trench.