Lithographic apparatus and device manufacturing method
First Claim
1. A substrate support configured to support a substrate in an immersion lithographic projection apparatus having a projection system configured to project a beam of radiation onto the substrate when supported on the substrate support 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 support when in the immersion lithographic projection apparatus, the substrate support comprising:
- a body to support the substrate, the body comprising;
a plurality of first protrusions on a first side of the body;
a plurality of second protrusions on a second side of the body opposite to the first side, the first protrusions arranged to support the substrate and an outer periphery of the body ringing the first and second sides;
an opening configured to apply a low pressure to suck the substrate onto the body; and
a port outward, relative to a center of the body, of the opening and at the outer periphery of the body, the port configured to drain liquid into the body.
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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.
224 Citations
20 Claims
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1. A substrate support configured to support a substrate in an immersion lithographic projection apparatus having a projection system configured to project a beam of radiation onto the substrate when supported on the substrate support 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 support when in the immersion lithographic projection apparatus, the substrate support comprising:
a body to support the substrate, the body comprising; a plurality of first protrusions on a first side of the body; a plurality of second protrusions on a second side of the body opposite to the first side, the first protrusions arranged to support the substrate and an outer periphery of the body ringing the first and second sides; an opening configured to apply a low pressure to suck the substrate onto the body; and a port outward, relative to a center of the body, of the opening and at the outer periphery of the body, the port configured to drain liquid into the body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A substrate support configured to support a substrate in an immersion lithographic projection apparatus having a projection system configured to project a beam of radiation onto the substrate when supported on the substrate support 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 support when in the immersion lithographic projection apparatus, the substrate support comprising:
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a body to support the substrate, the body comprising; a plurality of first protrusions on a first side of the body; a plurality of second protrusions on a second side of the body opposite to the first side, the first protrusions arranged to support the substrate; an opening configured to apply a low pressure to suck the substrate onto the body; and a port, at the first side of the body, configured to drain liquid into the body, the port connected to a drain hole at the second side of the body. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A substrate support configured to support a substrate in an immersion lithographic projection apparatus having a projection system configured to project a beam of radiation onto the substrate when supported on the substrate support 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 support when in the immersion lithographic projection apparatus, the substrate support comprising:
a body to support the substrate, the body comprising; a plurality of first protrusions on a first side of the body; a plurality of second protrusions on a second side of the body opposite to the first side, the first protrusions arranged to support the substrate and an outer periphery of the body forming a ring around the first and second sides; and a port, at the first side of the body and at the outer periphery, configured to drain liquid into the body, the port connected to a drain hole at the second side of the body and the port is located between adjacent first protrusions. - View Dependent Claims (16, 17, 18, 19, 20)
Specification