Lithographic apparatus and device manufacturing method
First Claim
Patent Images
1. A lithographic projection apparatus, comprising:
- an array of individually controllable elements configured to modulate a cross-section of a radiation beam;
a projection system configured to project the modulated radiation beam onto a target portion of a substrate; and
a liquid supply system configured to provide a liquid to a space between the projection system and the substrate, the liquid supply system comprising;
a lower part configured to supply liquid to and remove liquid from a top surface of the substrate, the entire lower part having a first cross-sectional area, andan upper part having a second cross sectional area and configured to supply liquid to and remove liquid from the second cross-sectional area comprising the remainder of the space in a plane substantially perpendicular to a direction of propagation of the beam, to which liquid is supplied between the upper and lower parts, the second cross-sectional area being greater than the first cross-sectional area.
1 Assignment
0 Petitions
Accused Products
Abstract
In optical maskless lithography, scanning of a single substrate is typically much slower than in conventional lithography. Solutions are described for the adoption of immersion lithography techniques into optical maskless lithography and in particular provides one or more solutions to reduce the amount of time which the immersion liquid is in contact with any given part of the top surface of the substrate during imaging.
-
Citations
12 Claims
-
1. A lithographic projection apparatus, comprising:
-
an array of individually controllable elements configured to modulate a cross-section of a radiation beam; a projection system configured to project the modulated radiation beam onto a target portion of a substrate; and a liquid supply system configured to provide a liquid to a space between the projection system and the substrate, the liquid supply system comprising; a lower part configured to supply liquid to and remove liquid from a top surface of the substrate, the entire lower part having a first cross-sectional area, and an upper part having a second cross sectional area and configured to supply liquid to and remove liquid from the second cross-sectional area comprising the remainder of the space in a plane substantially perpendicular to a direction of propagation of the beam, to which liquid is supplied between the upper and lower parts, the second cross-sectional area being greater than the first cross-sectional area. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A liquid supply system, comprising:
-
a lower part configured to supply liquid to and remove liquid from a top surface of a substrate, the entire lower part having a first cross-sectional area, and an upper part having a second cross-sectional area and configured to supply liquid to and remove liquid from the second cross-sectional area comprising a remainder of a space between a projection system and the substrate, to which liquid is supplied between the upper and lower parts, the second cross-sectional area being greater than the first cross-sectional area. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
Specification