Patent ID: 7781149

Claim:
A device manufacturing method for providing a desired pattern of features on a surface of a substrate comprising: exposing a first resist layer on top of a developable material layer on the substrate, to an image of a first pattern; developing the first resist layer and the developable material layer to provide the developable material layer with a first target pattern; removing the first resist layer; supplying a supplementary developable material layer to fill voids of the first target pattern of the developable material layer; coating a second resist layer on top of the supplementary developable material layer; exposing the second resist layer to an image of a second pattern; and developing the second resist layer and the supplemental developable material layer to provide the supplemental developable material layer with a second target pattern, wherein material of or on the substrate immediately beneath the developable material layer is not etched between the coating the surface of the substrate with the developable material layer and the coating the second resist layer on top of the supplemental developable material layer, and the first and second target patterns produce the desired pattern on the surface of the substrate.