Patent ID: 7199858
Filing Date: 2007-04-03
Classification: G03F

Abstract:
1. A lithographic projection apparatus comprising: a support structure configured to hold a patterning device, the patterning device configured to pattern a beam of radiation according to a desired pattern; a projection system configured to project the patterned beam onto a target portion of a substrate; a substrate table configured to hold said substrate, said substrate table comprising: an edge seal member configured to at least partly surround an edge of said substrate, an object positioned on said substrate table, or both, and a vacuum port, or a liquid supply port, or both, positioned to provide respectively vacuum or liquid to the gap between said edge seal member and said substrate, said object, or both, on a side opposite said projection system; and a liquid supply system configured to provide a liquid, through which said beam is to be projected, in a space between said projection system and said substrate, said object, or both.