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Lithographic apparatus and device manufacturing method

  • US 10,261,428 B2
  • Filed: 06/17/2016
  • Issued: 04/16/2019
  • Est. Priority Date: 11/12/2002
  • Status: Active Grant
First Claim
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1. A lithographic projection apparatus comprising:

  • a projection system configured to project a beam of radiation onto a target portion of a substrate;

    a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space below the projection system and configured to confine the liquid to a localized area smaller than a surface of the substrate;

    a substrate table configured to hold the substrate, the substrate table comprising;

    an edge member moveable from a surface of the substrate table, the edge member configured to at least partly surround an edge of the substrate and an object positioned on the substrate table and to provide a primary surface facing the projection system substantially co-planar with a primary surface of the substrate and the object, andan outlet configured to drain at least part of the liquid passing through a gap between the edge member and the substrate.

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