摘要:
A liquid confinement structure configured to contain a liquid in a space between a projection system and a substrate has a recess in its lower surface which is open to both a relatively low pressure source and a relatively high pressure source and through which liquid and/or gas from between the liquid confinement structure and the substrate is extracted.
摘要:
A fluid handling structure for a lithographic apparatus is disclosed. The fluid handling structure has a plurality of openings arranged in plan, in a line. The fluid handling structure is configured such that the openings are directed, in use, towards a facing surface, the facing surface being a substrate and/or a substrate table. The substrate table is configured to support the substrate. Outward of the line of openings is a damper. The damper may have a width that varies along the line of openings. The damper width is defined between the line of openings and an opposing damper edge.
摘要:
An immersion lithographic projection apparatus has a liquid confinement structure configured to at least partly confine liquid to a space between a projection system and a substrate, the confinement structure having a buffer surface, when in use, positioned in close proximity to a plane substantially comprising the upper surface of the substrate and of a substrate table holding the substrate, to define a passage having a flow resistance. A recess is provided in the buffer surface, the recess, when in use, being normally full of immersion liquid to enable rapid filling of a gap between the substrate and substrate table as the gap moves under the buffer surface. The recess may be annular or radial and a plurality of recesses may be provided.
摘要:
A lithographic apparatus is disclosed. The apparatus includes an illumination system to provide a beam of radiation, and a support structure for supporting a patterning device. The patterning device serves to impart the beam with a pattern in its cross-section. The apparatus also includes a gas flushing device for flushing a substantially laminar flow of gas across the beam of radiation and/or along a surface of an optical component. The gas flushing device includes a single gas outlet that has an inner rim at a downstream end of the gas outlet. The inner rim defines a total gas outlet area. The gas outlet is provided with a laminator that has an effective area out of which, in use, the substantially laminar flow of gas flows. The laminator effective area includes material that has laminator openings and is at least as large as the total gas outlet area.
摘要:
A lithographic projection apparatus in which a vacuum chamber provided with a vacuum generator constructed and arranged to generate a vacuum beam path for the projection beam, wherein the apparatus is provided with a collision protection apparatus for reducing the effects of a collision of an object table with the wall of the vacuum chamber or with another object table. These collisions may occur during a power failure or an error in a programmed control logic in a controller of the apparatus.
摘要:
A plurality of extraction conduits are provided to remove immersion liquid into a chamber. The extraction conduits are arranged at different distances from a target portion of the substrate. From the chamber, a passage is provided to which a suction force is applied. When all the conduits are filled with immersion liquid, the extraction capacity will be greater than when one or more of the conduits comprise gas.
摘要:
A method of adjusting speed and/or routing of a part of a movement plan of a table under an immersion fluid supply system of a lithographic apparatus. The method includes splitting the movement plan of the table into a plurality of discrete movements; determining a risk of a bubble of a size greater than a certain size being present in immersion fluid through which a patterned beam of the lithographic apparatus will pass during a certain discrete movement by determining whether the immersion fluid supply system passes over a position at which immersion fluid leaked from the immersion fluid supply system is present; and adjusting the speed and/or routing of a part of the movement plan corresponding to (i) a discrete movement earlier than a discrete movement for which the risk of a bubble is determined, and/or (ii) a discrete movement for which the risk of a bubble is determined.
摘要:
A meniscus pinning device has a plurality of openings through which liquid and gas from the environment are extracted. The openings are of an intermediate size, having a maximum cross-sectional dimension (e.g., diameter) in the range of from about 75 μm to about 150 μm.
摘要:
An immersion lithographic apparatus is described in which a liquid removal device is arranged to remove liquid from the substrate, e.g. during exposures, through a plurality of elongate slots arranged along a line and angled to that line. The liquid removal device may act as a meniscus pinning device in an immersion hood or may be used in a drying device to remove a droplet from the substrate.
摘要:
An apparatus is configured to position a workpiece. The apparatus includes a planar base, and a movable stage configured to support the workpiece. The stage is configured to be moved over the planar base. The apparatus also includes an actuator configured to move the stage, a contactless position measurer configured to measure a position of the stage, and a first pump configured to generate a conditioned gas flow in a volume between the measurer and the stage. The base includes a plurality of gas channels provided in the base that provide a path of the conditioned gas flow through the base.