Patent ID: 6821886
Filing Date: 2004-11-23
Classification: H01L

Abstract:
A process for the creation of a metal interconnect over a layer of adhesion material and a layer of barrier material having a thickness, comprising:providing a substrate, the substrate having been provided with at least one point of electrical contact in or over the surface thereof, a patterned layer of Anti Reflective Coating (ARC) having been deposited over at least one point of electrical contact; depositing a layer of dielectric over the substrate, including the surface of the patterned layer of Anti Reflective Coating (ARC); patterning and etching the layer of dielectric, creating at least one opening there-through and through said layer of ARC, exposing and further interacting with the at least one point of electrical contact; depositing a layer of adhesion material over the layer of dielectric, including inside surfaces of the at least one opening; depositing a layer of barrier material over the layer of adhesion material, the layer of barrier material comprising a first or lower and a second or upper layer of barrier material separated by a central layer of adhesion material; depositing a layer of conductive material over the layer of barrier material, filling the at least one opening; and removing excess material from the layer of dielectric.