Patent ID: 6835976
Filing Date: 2004-12-28
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate formed with an active element; a first interlayer insulating film formed above the semiconductor substrate; a lower electrode layer disposed on said first interlayer insulating film, made of rare metal, and electrically connected to the active element; a capacitor dielectric film disposed on said lower electrode layer and made of high dielectric material having a high dielectric constant or ferroelectric material; an upper electrode layer disposed on said capacitor dielectric film and made of rare metal; an adhesive layer disposed on said upper electrode layer and having a same plan shape as that of said upper electrode layer; a second insulating mask layer disposed on said adhesive layer and having a plan shape retracted from that of said adhesive layer; and an interlayer insulating film formed over said semiconductor substrate, covering said insulating mask layer, said upper electrode layer, said capacitor dielectric film and said lower electrode layer.