Patent ID: 7132709
Filing Date: 2006-11-07
Classification: H01L

Abstract:
1. A semiconductor device characterized by comprising: a capacitor made up of a lower electrode, a capacitive insulating film of an insulating metal oxide and an upper electrode, the lower electrode, the capacitive insulating film and the upper electrode being stacked in that order over a semiconductor substrate; a passivation film formed over the semiconductor substrate to cover the capacitor; a first-layer wire formed on the passivation film; a first interlevel dielectric film formed on the passivation film to cover the first-layer wire and the capacitor; a barrier film formed on the first interlevel dielectric film to overlap at least part of the capacitor, for preventing hydrogen from diffusing; a second interlevel dielectric film formed over the first interlevel dielectric film and the barrier film; a second-layer wire formed on the second interlevel dielectric film; and a via hole formed in respective regions of the first and second interlevel dielectric films where the barrier film is not formed, the via hole being formed to reach the first-layer wire, wherein the first interlevel dielectric film has a hydrogen content lower than that of the second interlevel dielectric film, and wherein the second-layer wire is electrically connected to the first-layer wire by way of the via hole.