Patent ID: 9425147
Filing Date: 2016-08-23
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: an interlayer insulating film; a wiring formed on the interlayer insulating film so as to protrude there from and made of a material having copper as a main component, the wiring having a thickness direction and having a cross sectional shape of an inverted trapezoid that becomes wider in width with distance away from the interlayer insulating film along the thickness direction of the wiring; and a passivation film formed so as to cover the wiring, wherein the passivation film is made of a laminated film in which a first nitride film, an intermediate film, and a second nitride film are laminated in that order from the wiring side, the intermediate film is made of an insulating material differing from those of the first and second nitride films, and the intermediate film has a tapered portion having a cross sectional shape of a trapezoid that becomes narrower in width with distance away from the interlayer insulating film along the thickness direction of the wiring.