Patent ID: 6028004
Filing Date: 2000-02-22
Classification: H01L

Abstract:
A method for forming electrical interconnection with studs which comprises:depositing conductive stud material within contact holes in a first dielectric layer and over said first dielectric layer;patterning the conductive stud material to form conductive studs by removing conductive stud material from over said first dielectric layer and by removing a shallow portion of said first dielectric layer surrounding the conductive stud material in said contact holes;depositing a second layer of dielectric material over said conductive studs and said first dielectric layer;forming trench through said second dielectric layer and over the top of said conductive studs wherein the depth of the trench is greater than the thickness of the second dielectric layer;depositing conductive material in said trench and patterning said conductive material to provide an electrical interconnection with said studs.