Patent ID: 6777318
Filing Date: 2004-08-17
Classification: H01L

Abstract:
A method of forming at least one aluminum/copper clad routing layer, comprising the steps of:providing a substrate having an overlying patterned dielectric layer; the patterned dielectric layer having at least one lower opening; lining the at least one lower opening with a first barrier layer; forming at least one lower copper routing layer portion within the at least one first barrier layer lined lower opening; forming a patterned layer over the at least one lower copper routing layer portion and the patterned dielectric layer; the patterned layer having at least one upper opening exposing at least a portion of the at least one lower copper routing layer portion; lining the at least one upper opening with a second barrier layer; and forming at least one upper aluminum routing layer portion within the at least one second barrier layer lined upper opening to form the at least one aluminum/copper clad routing layer.