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Lithographic device, device manufacturing method and device manufactured thereby

  • US 7,684,012 B2
  • Filed: 03/29/2006
  • Issued: 03/23/2010
  • Est. Priority Date: 03/29/2005
  • Status: Active Grant
First Claim
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1. A lithographic apparatus configured to project a pattern from a patterning device onto a substrate, the apparatus comprising:

  • a gas purged sealing aperture extending between at least two different zones of the apparatus to seal the zones from each other;

    a gas supplier configured to supply the sealing aperture with one or more gases selected from a group comprising hydrogen, deuterium, heavy hydrogen, deuterated hydrogen, and a mixture of argon and hydrogen;

    a substrate zone configured to hold at least one substrate; and

    an optics zone containing projection optics,wherein said sealing aperture extends at least between said substrate zone and said optics zone.

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