Patent ID: 7630060
Filing Date: 2009-12-08
Classification: B82Y,G03F,H01J

Abstract:
1. A device manufacturing method comprising: patterning a beam of radiation; projecting the patterned beam of radiation onto a plurality of outer target portions of a substrate, one outer target portion at a time, and moving the substrate in between projections in a sequence in which each subsequent outer target portion is spaced-apart from a preceding outer target portion by at least one further target portion; and subsequent to said projecting the patterned beam of radiation on the plurality of outer target portions, projecting the patterned beam of radiation onto an inner target portion of the substrate, the plurality of outer target portions surrounding the inner target portion, wherein the patterned beam of radiation is projected onto all said outer target portions of the substrate before the patterned beam is projected onto the inner target portion of the substrate.