Patent ID: 9274436
Filing Date: 2016-03-01
CPC Classification: G03F

Claim Text:
1. A lithographic apparatus comprising: a substrate table constructed to hold a substrate; a projection system configured to project a patterned radiation beam onto a target portion of the substrate; a fluid handling structure configured to confine liquid to a space between a final element of the projection system and a facing surface, the facing surface being a top surface of the substrate or a surface substantially co-planar with the substrate; a substrate surface actuator comprising a fluid opening for fluid flow therethrough from/onto the facing surface to generate a force between the substrate surface actuator and the facing surface, wherein the fluid opening extends around a corner; and a position controller to control the position and/or orientation of a part of the facing surface toward a desired position and/or orientation of the part, by varying fluid flow through the fluid opening to displace the part of the facing surface relative to the projection system.