Patent ID: 6472312
Filing Date: 2002-10-29
Classification: H01L

Abstract:
A method for forming a damascene structure comprising:providing a substrate; forming over the substrate a patterned dielectric layer which defines an aperture, where a sidewall of the patterned dielectric layer adjacent an edge of the substrate is laterally offset from the edge of the substrate by a lateral offset width; forming over the patterned dielectric layer a blanket conductor layer which fills the aperture and covers the sidewall of the patterned dielectric layer laterally offset from the edge of the substrate; chemical mechanical polish (CMP) planarizing the blanket conductor layer to form a chemical mechanical polish (CMP) planarized patterned conductor layer within the aperture and a chemical mechanical polish (CMP) planarized patterned conductor residue layer interposed between the sidewall of the patterned dielectric layer and the edge of the substrate.