Lithographic apparatus and device manufacturing method
First Claim
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1. A lithographic projection apparatus comprising:
- a substrate table by which a substrate is held;
a projection system by which a patterned beam is projected onto a target portion of the substrate, liquid being provided to a space between the projection system and the substrate and being confined in said space by a seal member; and
a member having a first side and a second side opposite from the first side, the member being removably positionable adjacent to the projection system between the projection system and the substrate table so that the first side faces the projection system and the second side faces the substrate table to isolate the space provided with the liquid which contacts the first side of the member from a second space located on the second side of the member, wherein the member is separable from the substrate table and the projection system, and wherein the member is positionable on the substrate table so that the first side is substantially coplanar with a top surface of the substrate table that receives the substrate,wherein, in use, the liquid is at least partly recovered from underneath the seal member through a surface of the seal member that faces the substrate, or the top surface of the substrate table or both.
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Abstract
A lithographic projection apparatus includes a support structure configured to hold a patterning device, the patterning device configured to pattern a beam of radiation according to a desired pattern; a substrate table configured to hold a substrate; a projection system configured to project the patterned beam onto a target portion of the substrate; a liquid supply system configured to provide liquid to a space between the projection system and the substrate; and a shutter configured to isolate the space from the substrate or a space to be occupied by a substrate.
96 Citations
19 Claims
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1. A lithographic projection apparatus comprising:
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a substrate table by which a substrate is held; a projection system by which a patterned beam is projected onto a target portion of the substrate, liquid being provided to a space between the projection system and the substrate and being confined in said space by a seal member; and a member having a first side and a second side opposite from the first side, the member being removably positionable adjacent to the projection system between the projection system and the substrate table so that the first side faces the projection system and the second side faces the substrate table to isolate the space provided with the liquid which contacts the first side of the member from a second space located on the second side of the member, wherein the member is separable from the substrate table and the projection system, and wherein the member is positionable on the substrate table so that the first side is substantially coplanar with a top surface of the substrate table that receives the substrate, wherein, in use, the liquid is at least partly recovered from underneath the seal member through a surface of the seal member that faces the substrate, or the top surface of the substrate table or both. - View Dependent Claims (2, 3, 4, 5)
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6. A lithographic projection apparatus comprising:
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a support structure configured to hold a patterning device, the patterning device configured to pattern a beam of radiation according to a desired pattern; a substrate table configured to hold a substrate; a projection system configured to project the patterned beam onto a target portion of the substrate; a liquid supply system configured to provide liquid to a space between the projection system and the substrate, the liquid supply system comprising a seal member that is configured to confine the liquid in said space; and a shutter configured to isolate the space from the substrate or a space to be occupied by a substrate, wherein the shutter is positionable on the substrate table so that a primary surface of the shutter is substantially coplanar with a top surface of the substrate table that receives the substrate, wherein, in use, the liquid is at least partly recovered from underneath the seal member through a surface of the seal member that faces the substrate, or the top surface of the substrate table or both. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification