Abstract:
PROBLEM TO BE SOLVED: To provide a fluid handling system in which a vibration produced by two phase extraction is reduced or eliminated. SOLUTION: A liquid-immersion lithography usually is equipped with a fluid handling system. The handling system generally has a two phase fluid extraction system which removes a mixture of a gas and a liquid from a predetermined place. Since the extract fluid contains two phases, the pressure in the extract system varies sometimes. It is likely that the pressure variation passes through the liquid-immersion liquid to cause an incorrect exposing light. A buffer chamber can be used to reduce the pressure variation in the extract system. The buffer chamber may be connected to the fluid extract system in order to provide a fixed volume of gas to reduce the pressure variation. Substitutively or additionally, a flexible wall portion may be provided to somewhere in the fluid extract system. The flexible wall portion may respond to the pressure variation in the fluid extract system to change its shape. The change of the shape may be a help when the flexible wall portion reduces or eliminates the pressure variation. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic projection apparatus in which measures are taken to prevent or reduce the presence of bubbles in liquid through which the radiated projection beam passes. SOLUTION: This may be done, for example, by ensuring that a gap between a substrate and a substrate table is filled with immersion liquid or by causing a localized flow radially outwardly from the optical axis in the vicinity of the edge of the substrate. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To disclose a table in which measures are taken to seal between the table and an edge of an object, in use, supported on the table. SOLUTION: In particular, a capillary passage is formed between the object on the table and the table itself. A meniscus pinning feature and/or the presence of an overpressure at the radially inward side of the capillary passage holds the liquid in the passage and helps prevent it from advancing further radially inwardly. The features to perform this function may be associated with or formed in a member surrounding the object. The member may be thermally decoupled from a part of the table. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system for removing a liquid from a substrate table, in particular, from a gap between the substrate table and a substrate, and to provide a method therefor. SOLUTION: In the liquid removing method, the liquid is removed from the substrate held on the substrate table and from the gap between the substrate and the substrate table. A liquid removing device is provided with at least one outlet port, forming a predetermined geometric long and thin extractor; the substrate table is moved relative to the liquid removing device so that the extractor passes all through the substrate and the gap; and that the local tangent in the local portion of the extractor at the end of non-dry portion in the gap substantially holds the angle between about 35° and 90° on a planar view, at arbitrary times with respect to that in the gap. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion lithographic apparatus capable of improving removal of liquid from a substrate or a substrate table surface. SOLUTION: A gas knife 410 comprises eight segments each of which has a radius smaller than an average radius of the gas knife 410 to reserve a gas knife area further apart from the average radius and near a projection beam PB. A liquid extractor 420 lies at a part of the most distant gas knife 410 present inside in radius direction of the gas knife 410. Combination of such a gas knife 410 and a substrate displacement makes it possible to collect liquid in the liquid extractor 420, which works as a liquid removal device. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
A source-collector device is constructed and arranged to generate a radiation beam, The device includes a target unit constructed and arranged to present a target surface of plasma- forming material; a laser unit constructed and arranged to generate a beam of radiation directed onto the target surface so as to form a plasma from said plasma-forming material; a contaminant trap constructed and arranged to reduce propagation of particulate contaminants generated by the plasma; a radiation collector comprising a plurality of grazing-incidence reflectors arranged to collect radiation emitted by the plasma and form a beam therefrom; and a filter constructed and arranged to attenuate at least one wavelength range of the beam.
Abstract:
A radiation source comprising a fuel source configured to deliver fuel to a location from which the fuel emits EUV radiation. The radiation source further comprises an immobile fuel debris receiving surface provided with a plurality of grooves. The grooves have orientations which are arranged to direct the flow of liquid fuel under the influence of gravity in one or more desired directions.
Abstract:
A fluid handling structure for a lithographic apparatus is disclosed, the fluid handling structure successively has, at a boundary from a space configured to contain immersion fluid to a region external to the fluid handling structure: an elongate opening or a plurality of openings arranged in a first line that, in use, are directed towards a substrate and/or a substrate table configured to support the substrate; a gas knife device having an elongate aperture in a second line; and an elongate opening or a plurality of openings adjacent the gas knife device.[Figure 1]