Patent ID: 7326523

Claim:
A method of forming a patterned material feature on a substrate, said method comprising: providing a material layer on a substrate; forming an underlayer on said material layer, said underlayer comprising a vinyl or acrylate polymer, said polymer comprising (i) a monomer with at least one substituted or unsubstituted naphthalene or naphthol moiety, and (ii) a co-monomer with saturated carbon bonds, said co-monomer with saturated carbon bonds comprising a reactive site selected from the group consisting of amino groups, imino groups, and mixtures thereof; forming a radiation-sensitive imaging layer on said underlayer; patternwise exposing said imaging layer to radiation, thereby creating a pattern of radiation-exposed regions in said imaging layer; selectively removing portions of said imaging layer and underlayer to expose portions of said material layer; and etching said exposed portions of said material layer, thereby forming said patterned material feature.