Lithographic apparatus and device manufacturing method
First Claim
1. A lithographic projection apparatus comprising:
- a projection system configured to project a beam of radiation onto a target portion of a substrate;
a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space below the projection system and configured to confine the liquid to a localized area smaller than a surface of the substrate;
a substrate table configured to hold the substrate, the substrate table comprising;
an edge member moveable from a surface of the substrate table, the edge member configured to at least partly surround an edge of the substrate and an object positioned on the substrate table and to provide a primary surface facing the projection system substantially co-planar with a primary surface of the substrate and the object, andan outlet configured to drain at least part of the liquid passing through a gap between the edge member and the substrate.
2 Assignments
0 Petitions
Accused Products
Abstract
A lithographic projection apparatus is disclosed in which a space between the projection system and the substrate is filled with a liquid. An edge seal member at least partly surrounds the substrate or other object on a substrate table to prevent liquid loss when edge portions of the substrate or other object are, for example, imaged or illuminated. 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.
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Citations
20 Claims
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1. A lithographic projection apparatus comprising:
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a projection system configured to project a beam of radiation onto a target portion of a substrate; a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space below the projection system and configured to confine the liquid to a localized area smaller than a surface of the substrate; a substrate table configured to hold the substrate, the substrate table comprising; an edge member moveable from a surface of the substrate table, the edge member configured to at least partly surround an edge of the substrate and an object positioned on the substrate table and to provide a primary surface facing the projection system substantially co-planar with a primary surface of the substrate and the object, and an outlet configured to drain at least part of the liquid passing through a gap between the edge member and the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A lithographic projection apparatus comprising:
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a projection system configured to project a radiation beam onto a target portion of a substrate; a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space below the projection system and configured to confine the liquid to a localized area smaller than a surface of the substrate; a movable table comprising; an edge member configured to at least partly surround an edge of an object, when on the table, and to provide a primary surface facing the projection system substantially co-planar with a primary surface of the object, and an outlet configured to drain at least part of the liquid passing through a gap between the edge member and the object. - View Dependent Claims (13, 14, 15, 16)
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17. A lithographic projection apparatus comprising:
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a projection system configured to project a radiation beam onto a target portion of a substrate; a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space below the projection system and configured to confine the liquid to a localized area smaller than a surface of the substrate; a movable table comprising; an edge member configured to at least partly surround an edge of an object, when on the table, and to provide a primary surface facing the projection system substantially co-planar with a primary surface of the object, and a hydrophobic surface located below the primary surfaces of the edge member and the object and arranged to contact liquid entering a gap between the edge member and the object. - View Dependent Claims (18, 19, 20)
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Specification