Abstract:
An immersion lithographic apparatus is disclosed that includes a fluid handling system configured to confine immersion liquid to a localized space between a final element of a projection system and a substrate and/or table and a gas supplying device configured to supply gas with a solubility in immersion liquid of greater than 5×10−3 mol/kg at 20° C. and 1 atm total pressure to an area adjacent the space.
Abstract:
An immersion lithographic apparatus includes a projection system. The projection system is configured to project a patterned radiation beam through an immersion liquid onto a target portion of a substrate. An external surface of the projection system includes a first surface. The first surface has a non-planar shape. An element is attached to the first surface and positioned so that at least a portion of the element contacts the immersion liquid in use. The element includes a closed loop of continuously integral material in a preformed state and conforms to the non-planar shape of the first surface.
Abstract:
A lithographic apparatus includes a substrate table, a post-exposure handling module, a substrate handling robot and a drying station. The substrate table is configured to support a substrate for an exposure process. The post-exposure handling module is configured to handle the substrate post-exposure. The substrate handling robot is configured to transfer the substrate from the substrate table along a substrate unloading path into the post-exposure handling module. The drying station is configured to actively remove liquid from a surface of the substrate. The drying station is located in the substrate unloading path. The drying station is located in the post-exposure handling module. The post-exposure handling module may be a substrate handler.
Abstract:
A fluid handling structure for a lithographic apparatus, the fluid handling structure having, at a boundary from a space configured to contain immersion fluid to a region external to the fluid handling structure: a meniscus pinning feature to resist passage of immersion fluid in a radially outward direction from the space; a plurality of gas supply openings in a linear array at least partly surrounding and radially outward of the meniscus pinning feature; and a gas recovery opening radially outward of the plurality of gas supply openings in a linear array.
Abstract:
Disclosed herein is a fluid handling system for a lithographic apparatus, wherein the fluid handling system is configured to confine immersion liquid to a liquid confinement space between a part of a projection system and a surface of a substrate in the lithographic apparatus whereby a radiation beam projected from the projection system can irradiate the surface of the substrate by passing through the immersion liquid, the fluid handling system comprising: a damper arranged between a first extraction member and a second extraction member both configured to extract fluid; wherein the damper is configured to support a meniscus of the immersion liquid between a surface of the damper and the surface of the substrate.
Abstract:
A lithographic apparatus has a substrate holder configured to hold a substrate and a projection system configured to project a radiation beam onto the substrate held by the substrate holder. There is also a fluid handling system configured to confine immersion liquid to a space between a part of the projection system and a surface of the substrate so that the radiation beam can irradiate the surface of the substrate by passing through the immersion liquid. An excitation device is provided to generate surface acoustic waves in the substrate and propagating toward the immersion liquid.
Abstract:
A fluid handling structure for a lithographic apparatus configured to contain immersion fluid to a region, the fluid handling structure having, at a boundary of a space: at least one gas knife opening in a radially outward direction of the space; and at least one gas supply opening in the radially outward direction of the at least gas knife opening relative to the space. The gas knife opening and the gas supply opening both provide substantially pure CO2 gas so as to provide a substantially pure CO2 gas environment adjacent to, and radially outward of, the space.
Abstract:
A fluid handling structure for a lithographic apparatus configured to contain immersion fluid to a region, the fluid handling structure having, at a boundary of a space: at least one gas knife opening in a radially outward direction of the space; and at least one gas supply opening in the radially outward direction of the at least gas knife opening relative to the space. The gas knife opening and the gas supply opening both provide substantially pure CO2 gas so as to provide a substantially pure CO2 gas environment adjacent to, and radially outward of, the space.
Abstract:
A method of performance testing working parameters of a fluid handing structure in an immersion lithographic apparatus, the method including: placing a test substrate having an upper surface with a first portion with a resist defining the upper surface and a second portion with a material different from the resist defining the rest of the upper surface on a table in the immersion lithographic apparatus, confining liquid on a region of an upper surface of the table and/or the upper surface of the test substrate by operating the fluid handing structure using the associated working parameters, moving the table such that the region moves from the second portion to the first portion, and detecting change to and/or residue on the first portion as a result of liquid being left behind on the first portion during the moving.
Abstract:
A fluid handling structure for a lithographic apparatus, the fluid handling structure having, at a boundary from a space configured to contain immersion fluid to a region external to the fluid handling structure: a meniscus pinning feature to resist passage of immersion fluid in a radially outward direction from the space; and a plurality of gas supply openings in a linear array at least partly surrounding and radially outward of the one or more meniscus pinning features, wherein the plurality of gas supply openings in a linear array are of a similar or the same size.