Patent ID: 9176393
Filing Date: 2015-11-03
Classification: G03F

Abstract:
1. An immersion lithographic apparatus, comprising: a substrate table configured to support a substrate; a shutter member having a top surface, wherein, when the shutter member is adjacent the substrate table, the top surface is substantially co-planar with a surface of the substrate table and/or the substrate and the surfaces of the shutter member and the substrate table are spaced apart by a gap; a fluid handling structure configured to supply and confine a liquid between a projection system and (i) the substrate, or (ii) the substrate table, or (iii) a surface of the shutter member, or (iv) any combination selected from (i)-(iii); and a fluid extraction system configured to remove at least some of the liquid from the gap through an extraction opening in a sidewall surface of the shutter member and/or in a sidewall surface of the substrate table, the sidewall surface having an orientation different from a top surface of the substrate when supported by the substrate table and having at least a portion thereof extending diagonally to undercut the respective top surface of the shutter member and/or the surface of the substrate table, the extraction opening having an orientation with at least a vertical direction component, and the sidewall surface having a ledge that is below the extraction opening, is at least partly underneath the diagonal portion, and extends away from the extraction opening such that an outer edge of the ledge is laterally spaced apart from the other of the shutter member or the substrate table.