Lithographic apparatus and device manufacturing method
First Claim
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1. A lithographic apparatus, comprising:
- an illumination system configured to condition a radiation beam, the illumination system configured to illuminate a nominal field on a substrate;
an array of individually controllable elements capable of modulating at least part of a cross-section of the radiation beam;
a projection system configured to project the modulated radiation beam onto a target portion of a substrate; and
a liquid supply system configured to provide a liquid to a space between the projection system and the substrate for the modulated radiation beam to pass through, the liquid supply system comprising a liquid supply limiter configured to limit an area of a top surface of the substrate to which liquid is supplied to a size smaller than the nominal field.
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Abstract
In optical maskless lithography, scanning of a single substrate is typically much slower than in conventional lithography. Solutions are described for the adoption of immersion lithography techniques into optical maskless lithography and in particular provides one or more solutions to reduce the amount of time which the immersion liquid is in contact with any given part of the top surface of the substrate during imaging.
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Citations
8 Claims
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1. A lithographic apparatus, comprising:
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an illumination system configured to condition a radiation beam, the illumination system configured to illuminate a nominal field on a substrate; an array of individually controllable elements capable of modulating at least part of a cross-section of the radiation beam; a projection system configured to project the modulated radiation beam onto a target portion of a substrate; and a liquid supply system configured to provide a liquid to a space between the projection system and the substrate for the modulated radiation beam to pass through, the liquid supply system comprising a liquid supply limiter configured to limit an area of a top surface of the substrate to which liquid is supplied to a size smaller than the nominal field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification