Patent ID: 6074913
Filing Date: 2000-06-13
Classification: H01L

Abstract:
A method for manufacturing a metal-insulator-metal capacitor on a substrate, the method comprising the steps of:forming a first dielectric layer onto said substrate;patterning and etching said first dielectric layer to form a contact opening;forming a first metal layer onto said first dielectric layer and into said contact opening;forming a barrier layer onto said first metal layer;forming a second dielectric layer onto said barrier layer;forming a discrete HSG layer onto said second dielectric layer;etching said second dielectric layer by using said HSG layer as a mask;stripping said HSG layer;etching said barrier layer and said first metal layer by using a remaining portion of said second dielectric layer as a mask;stripping said remaining portion of said second dielectric layer;patterning and etching a remaining portion of said barrier layer and a remaining portion of said first metal layer;forming a third dielectric layer over said barrier layer, said first metal layer and said first dielectric layer; andforming a second metal layer over said third dielectric layer.