Lithographic apparatus and device manufacturing method
First Claim
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1. A lithographic apparatus comprising:
- a movable table;
a projection system arranged to project a patterned radiation beam onto a target portion of a radiation-sensitive substrate;
a liquid supply system member configured to contain a liquid in a space between the projection system and the substrate;
a liquid supply system member compensator arranged to compensate for a disturbance caused, or to be caused, to the table by a non-contact interaction between the liquid supply system member and the table, wherein the liquid supply system member compensator comprises a liquid supply system member suspension device capable of applying a force to the liquid supply system member to at least partially compensate for the interaction between the liquid supply system member and the table;
a liquid supply system member position determining device configured to determine a position of the liquid supply system member in a direction substantially perpendicular to the optical axis of the projection system; and
a liquid supply system member suspension device controller configured to apply a force to the liquid supply system member, via the liquid supply system member suspension device, based on a position of the liquid supply system member as measured by the liquid supply system member position determining device.
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Abstract
An immersion lithographic apparatus includes a liquid supply system member configured to contain a liquid in a space between a projection system of the lithographic apparatus and the substrate and a liquid supply system member compensator arranged to compensate an interaction between the liquid supply system member and substrate table.
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Citations
20 Claims
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1. A lithographic apparatus comprising:
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a movable table; a projection system arranged to project a patterned radiation beam onto a target portion of a radiation-sensitive substrate; a liquid supply system member configured to contain a liquid in a space between the projection system and the substrate; a liquid supply system member compensator arranged to compensate for a disturbance caused, or to be caused, to the table by a non-contact interaction between the liquid supply system member and the table, wherein the liquid supply system member compensator comprises a liquid supply system member suspension device capable of applying a force to the liquid supply system member to at least partially compensate for the interaction between the liquid supply system member and the table; a liquid supply system member position determining device configured to determine a position of the liquid supply system member in a direction substantially perpendicular to the optical axis of the projection system; and a liquid supply system member suspension device controller configured to apply a force to the liquid supply system member, via the liquid supply system member suspension device, based on a position of the liquid supply system member as measured by the liquid supply system member position determining device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lithographic apparatus comprising:
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a movable table; a projection system arranged to project a patterned radiation beam onto a target portion of a radiation-sensitive substrate; a liquid supply system member configured to contain a liquid in a space between the projection system and the substrate; and a liquid supply system member compensator arranged to compensate for a disturbance caused, or to be caused, by an interaction between the liquid supply system member and the table, wherein the interaction comprises an external position dependent force, wherein the liquid supply system member compensator comprises a liquid supply system member suspension device capable of applying a force to the liquid supply system member to at least partially compensate for the interaction between the liquid supply system member and the table.
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14. A lithographic apparatus comprising:
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a movable table; a projection system arranged to project a patterned radiation beam onto a target portion of a radiation-sensitive substrate; a liquid supply system member configured to contain a liquid in a space between the projection system and the substrate; and a liquid supply system member compensator arranged to compensate for a disturbance caused, or to be caused, to the table by a non-contact interaction between the liquid supply system member and the table, the liquid supply system member compensator comprising a liquid supply system member suspension device capable of applying a force to the liquid supply system member based on a position of the liquid supply system member in a substantially horizontal direction relative to a part of the lithographic apparatus to at least partially compensate for the interaction between the liquid supply system member and the table. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification