Lithographic apparatus and device manufacturing method
First Claim
1. A lithographic projection apparatus comprising:
- a projection system configured to project a patterned beam onto a target portion of a substrate;
a substrate table configured to hold the substrate, the substrate table comprising;
an edge seal member configured to at least partly surround an edge of the substrate, an object positioned on the substrate table, or both, anda vacuum port to provide vacuum to a gap between the edge seal member and the substrate, the object, or both, the vacuum port positioned on a side of the gap opposite the projection system; and
a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space between the projection system and the substrate, the object, or both and to confine the liquid essentially to a localized area on the substrate table smaller than an area of the substrate.
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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.
219 Citations
74 Claims
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1. A lithographic projection apparatus comprising:
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a projection system configured to project a patterned beam onto a target portion of a substrate; a substrate table configured to hold the substrate, the substrate table comprising; an edge seal member configured to at least partly surround an edge of the substrate, an object positioned on the substrate table, or both, and a vacuum port to provide vacuum to a gap between the edge seal member and the substrate, the object, or both, the vacuum port positioned on a side of the gap opposite the projection system; and a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space between the projection system and the substrate, the object, or both and to confine the liquid essentially to a localized area on the substrate table smaller than an area of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A lithographic projection apparatus comprising:
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a projection system configured to project a patterned beam onto a target portion of a substrate; a substrate table configured to hold the substrate, the substrate table comprising; an edge seal member configured to at least partly surround an edge of a substrate, an object, or both, 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, the object, or both, and a port to drain liquid entering a gap between the edge seal member and the substrate, the object, or both, the port positioned on a side of the gap opposite the projection system; and a liquid supply system configured to provide a liquid, through which the beam is to be projected, in a space between the said-projection system and the substrate, the object, or both, and to confine the liquid essentially to a localized area on the substrate table smaller than an area of the substrate. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A lithographic projection apparatus comprising:
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a projection system configured to project a patterned beam onto a target portion of a photosensitive substrate; a substrate table configured to hold the substrate, the substrate table comprising; an edge seal member configured to at least partly surround an edge of a substrate, an object, or both, positioned on the substrate table and configured to provide an upward-facing primary surface substantially co-planar with a primary surface of the substrate, the object, or both, and a further edge seal member configured to extend across a gap between the edge seal member and the substrate, the object, or both, and to be in contact with the substrate, the object, or both, wherein the further edge seal member is movable relative to the edge seal member; and a liquid supply system configured provide a liquid, through which the beam is to be projected, in a space between the projection system and the substrate, the object, or both. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. A device manufacturing method comprising:
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providing a liquid, using a liquid supply system, in a space between a projection system and a substrate supported on a substrate table, the substrate table comprising; an edge seal member at least partly surrounding an edge of the substrate, an object positioned on the substrate table, or both, and a vacuum port; confining the liquid essentially to a localized area on the substrate table smaller than an area of the substrate; projecting a patterned beam, using the projection beam and through the liquid, onto a target portion of the substrate supported by the substrate table; and providing vacuum, using the vacuum port, to a gap between the edge seal member and the substrate, the object, or both, the vacuum port positioned on a side of the gap opposite the projection system. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A device manufacturing method comprising:
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providing a liquid, using a liquid supply system, in a space between a projection system and a substrate supported on a substrate table, the substrate table comprising; an edge seal member at least partly surrounding an edge of the substrate, an object positioned on the substrate table, or both, the edge seal member providing a primary surface facing the projection system substantially co-planar with a primary surface of the substrate, the object, or both, and a port; confining the liquid essentially to a localized area on the substrate table smaller than an area of the substrate; projecting a patterned beam, using the projection beam and through the liquid, onto a target portion of the substrate supported by the substrate table; and draining, using the port, liquid entering a gap between the edge seal member and the substrate, the object, or both, the port positioned on a side of the gap opposite the protection system. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. A device manufacturing method comprising:
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providing a liquid, using a liquid supply system, in a space between a projection system and a substrate supported on a substrate table, the substrate table comprising an edge seal member at least partly surrounding an edge of the substrate, an object positioned on the substrate table, or both, the edge seal member providing an upward- facing primary surface substantially co-planar with a primary surface of the substrate, the object, or both; providing a further edge seal member extending across a gap between the edge seal member and the substrate, the object, or both, the further edge seal member contacting with the substrate, the object, or both, wherein the further edge seal member is movable relative to the edge seal member; projecting a patterned beam, using the projection beam and through the liquid, onto a target portion of the substrate supported by the substrate table; and blocking liquid from, or in, the gap using the further edge seal member. - View Dependent Claims (66, 67, 68, 69, 70, 71, 72, 73, 74)
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Specification