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System, apparatus and method for maskless lithography that emulates binary, attenuating phase-shift and alternating phase-shift masks

  • US 7,274,502 B2
  • Filed: 12/22/2004
  • Issued: 09/25/2007
  • Est. Priority Date: 12/22/2004
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • an illumination system that supplies a beam of radiation having a wavelength;

    an array of individually controllable elements that patterns the beam, each individually controllable element comprising a tilting portion and a non-tilting portion displaced from the tilting portion by a predetermined distance equal to a fraction of the wavelength; and

    a projection system that projects the patterned beam onto a target portion of an object,wherein the displacement causes radiation reflected by the tilting portion and the non-tilting portion to be out of phase in accordance with the fraction of the wavelength.

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