Lithographic apparatus and device manufacturing method
First Claim
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1. A positioning apparatus for use in a lithographic apparatus for projecting a patterned beam of radiation onto a substrate, the positioning apparatus comprising:
- a first table connected to a first positioning system configured to displace the first table into and out of a path of the patterned beam of radiation, the first table being configured to hold a substrate; and
a second table connected to a second positioning system configured to position the second table into the path of the patterned beam of radiation when the first table is displaced out of the path of the patterned beam of radiation, the second table not being configured to hold a substrate and comprising a sensor configured to sense a property of the patterned beam of radiation.
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Abstract
In a single or multiple stage lithography apparatus, a table provides a confining surface to a liquid supply system during, for example, substrate table exchange and/or substrate loading and unloading. In an embodiment, the table has a sensor to make a measurement of the projection beam during, for example, substrate table exchange and/or substrate loading and unloading.
128 Citations
13 Claims
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1. A positioning apparatus for use in a lithographic apparatus for projecting a patterned beam of radiation onto a substrate, the positioning apparatus comprising:
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a first table connected to a first positioning system configured to displace the first table into and out of a path of the patterned beam of radiation, the first table being configured to hold a substrate; and a second table connected to a second positioning system configured to position the second table into the path of the patterned beam of radiation when the first table is displaced out of the path of the patterned beam of radiation, the second table not being configured to hold a substrate and comprising a sensor configured to sense a property of the patterned beam of radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A lithographic apparatus, comprising:
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a substrate table configured to hold a substrate; a projection system configured to project a patterned beam of radiation onto the substrate; a first positioning system connected to the substrate table and configured to displace the substrate table into and out of a path of the patterned beam of radiation; a sensor table not configured to hold a substrate and comprising a sensor configured to sense a property of the patterned beam of radiation; and a second positioning system configured to position the sensor table into the path of the patterned beam of radiation when the substrate table is displaced out of the path of the patterned beam of radiation. - View Dependent Claims (10, 11, 12, 13)
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Specification