Patent ID: 6436787
Filing Date: 2002-08-20
Classification: H01L

Abstract:
A method for fabricating a crown-type MIM capacitor comprising:providing a contact node overlying a substrate; depositing an intermetal dielectric layer overlying said contact node; forming a damascene opening through said intermetal dielectric layer to said contact node; forming a first copper layer on the bottom and sidewalls of said damascene opening and overlying said intermetal dielectric layer; depositing a first barrier metal layer overlying said first copper layer; depositing a dielectric layer overlying said first barrier metal layer; depositing a second barrier metal layer overlying said dielectric layer; forming a second copper layer overlying said second barrier metal layer and completely filling said damascene opening; and polishing back said second copper layer, said second barrier metal layer, said dielectric layer, said first barrier metal layer, and said first copper layer to leave said first copper layer, said second barrier metal layer, said dielectric layer, said first barrier metal layer, and said second copper layer only within said damascene opening wherein said first copper layer forms a bottom electrode, said dielectric layer forms a capacitor dielectric, and said second copper layer forms a top electrode to complete fabrication of said crown-type capacitor in the fabrication of said integrated circuit device.