Patent ID: 8040214

Claim:
A semiconductor device comprising: a first metal wiring layer formed above a semiconductor substrate; a first interlayer insulating film formed on the first metal wiring layer; a lower-surface oxidation preventing insulating film formed on a second interlayer insulating film; a metal resistor element film formed on the lower-surface oxidation preventing insulating film; an upper-surface oxidation preventing insulating film formed on the metal resistor element film; a side-surface oxidation preventing insulating film formed only near a side surface of the metal resistor element film; the second interlayer insulating film formed on the first interlayer insulating film so as to cover a structure composed of the lower-surface oxidation preventing insulating film, the metal resistor element film, the upper-surface oxidation preventing insulating film and the side-surface oxidation preventing insulating film; and a second metal wiring layer formed on the second interlayer insulating film.