Patent ID: 7868420

Claim:
A semiconductor device, comprising: a semiconductor substrate having a principal surface; a lower electrode film disposed on the principal surface of the semiconductor substrate; a dielectric film disposed on the lower electrode; an upper electrode film disposed on the dielectric film, wherein the lower electrode film, the dielectric film and the upper electrode film constitute a capacitor; an interconnection film including a portion disposed on the upper electrode film so as to be electrically coupled to the upper electrode film, wherein directions of residual stresses of the upper electrode film coincide with directions of residual stresses of the portion of the interconnection film, wherein the interconnection film is a first interconnection film; a second interconnection film disposed on the first interconnection film so as to extend along the first interconnection film, wherein the second interconnection film includes titanium nitride, wherein a ratio of a thickness of the first interconnection film to a thickness of the second interconnection film ranges from 0.5 to 5.83; an insulating film disposed on the second interconnection film so as to cover the first and second interconnection films and the capacitor, wherein the insulating film is attached to the second interconnection film; a third interconnection film disposed between the upper electrode film and the first interconnection film so as to extend along the first interconnection film, wherein the third interconnection film includes titanium nitride; and an interlayer insulating film disposed between the third interconnection film and the surface of the semiconductor substrate so as to cover the capacitor with being attached to the third interconnection layer.