Patent ID: 6441467
Filing Date: 2002-08-27
Classification: H01L

Abstract:
A semiconductor device, comprising:an active element provided on a semiconductor substrate, said active element including diffusion regions in the substrate, a polysilicon conductive gate on the substrate between said diffusion regions, and a silicon oxide insulating film over the diffusion regions and gate; and an interlayer insulating film formed so as to cover entirely said active element, including said diffusion regions; wherein said interlayer insulating film has a quintuple layer structure, each of first, third and fifth layers thereof being a silicon nitride film or a silicon oxide film, while each of second and fourth layers being spin-on-glass; the semiconductor device further comprising a metal layer formed on the active element and in electrical contact with one of said diffusion layers through a contact hole in the silicon oxide insulating film; the film formed of spin-on-glass in the interlayer insulating film being formed to a minimum thickness necessary for compensating the level difference of the metal layer; a pad metal for an electrode pad, said pad metal being provided on said interlayer insulating film, substantially overlapping said active element, and in electrical contact with the metal layer through a contact hole in the interlayer insulating film, wherein the interlayer insulating film is sandwiched between said metal pad and metal layer.