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Lithographic apparatus and device manufacturing method

  • US 7,248,339 B2
  • Filed: 07/01/2004
  • Issued: 07/24/2007
  • Est. Priority Date: 07/04/2003
  • Status: Active Grant
First Claim
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1. A lithographic apparatus, comprising:

  • a substrate holder configured to hold a substrate;

    a radiation system configured to condition a beam of radiation;

    a support structure configured to support a patterning device that imparts a desired pattern onto the beam of radiation;

    a projection system that projects the patterned beam onto a target portion of the substrate;

    a base frame;

    at least one actuator that moves the substrate holder relative to the base frame; and

    a balance mass, supported by the base frame, arranged such that the substrate holder exerts a reaction force on the balance mass,wherein the balance mass is resiliently connected to the base frame with a suspension frequency that is different than resonant frequency of the base frame.

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