Lithographic apparatus and device manufacturing method
The present invention relates to the method of reducing contamination of an immersion liquid in a lithographic apparatus when a closing surface is used to confine liquid in a liquid supply system. To avoid or reduce particulate contamination caused by the closing surface colliding with the liquid su...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The present invention relates to the method of reducing contamination of an immersion liquid in a lithographic apparatus when a closing surface is used to confine liquid in a liquid supply system. To avoid or reduce particulate contamination caused by the closing surface colliding with the liquid supply system, the closing surface is maintained at a distance away from the liquid supply system such that there is no collision between the closing surface and the liquid supply system, but the liquid is nonetheless confined. |
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