Patent ID: 6077780
Filing Date: 2000-06-20
Classification: H01L

Abstract:
A method for filling, with a conductive material, an opening having a width and a depth within an integrated circuit, said opening abutting a bottom metal line, the method comprising the steps of:A. performing a first deposition of said conductive material by one of electroplating and electroless plating to partially fill the opening with the conductive material;B. reflowing the conductive material filled within the opening by heating the conductive material filled within the opening, after said step A of performing said first deposition to partially fill the opening;wherein said conductive material partially fills said opening after said step B of reflowing the conductive material within said opening; andC. performing a second deposition of said conductive material by one of electroplating and electroless plating to completely fill the opening with the conductive material, after said step B of reflowing the conductive material that partially fills the opening.