Patent ID: 6819405
Filing Date: 2004-11-16
Classification: G03F

Abstract:
A lithographic projection apparatus comprising:a radiation system to provide a projection beam of radiation; a support structure to support patterning structure, the patterning structure serves to pattern the projection beam according to a desired pattern, and the support structure further supports supplementary patterning structure, the supplementary patterning structure serves to pattern a supplementary projection beam of radiation according to a supplementary pattern which is different to the pattern of the patterning structure; a long-stroke actuator to position the support structure; a first short-stroke actuator to position the patterning structure relative to the support structure; a second short-stroke actuator to position the supplementary patterning structure relative to the support structure: a substrate table to hold a substrate; a projection system to project the patterned beam onto a target portion of the substrate; and wherein the apparatus is configured to project the patterned beam and the supplementary patterned beam onto the substrate simultaneously such that the beams overlap at least partially, and wherein the apparatus is configured to move the substrate relative to the projection system during the simultaneous projection.