Patent ID: 7868998
Filing Date: 2011-01-11
Classification: G03F

Abstract:
1. A lithographic projection apparatus, comprising: a support structure configured to support a patterning device, the patterning device configured to pattern a beam of radiation according to a desired pattern; a substrate table configured to hold a substrate; a projection system configured to project the patterned beam onto a target portion of the substrate; and a liquid supply system configured to at least partly fill a space between a surface of the projection system and the substrate with a liquid, the liquid supply system comprising an inlet configured to provide liquid to the space and a liquid confinement structure extending along at least a part of the boundary of the space, the inlet being adjacent to an inner periphery of the liquid confinement structure and directed towards the target portion of the substrate such that a line extending perpendicularly from the inlet intersects the substrate within the outer boundary of the projection system surface contacting the liquid, wherein the substrate table is movable with respect to the inlet.