Abstract:
PROBLEM TO BE SOLVED: To provide a system that efficiently and effectively eliminates such energy loss in a lithographic apparatus as occurs by evaporation of a provided liquid which locally cools associated components leading to deformations and deterioration that may cause defocus and lens aberration in immersion lithography where a space between a projection system and a substrate is filled with an immersion liquid to increase the numerical aperture.SOLUTION: A timetable 34 is prepared which comprises information regarding the time and the position, the speed, the acceleration etc. of the substrate W at which evaporation of a provided liquid 11 is most likely to occur. A liquid evaporation controller 30 heats at least a part of the substrate W by a heater or sends humidified air to prevent local evaporation, according to the timetable 34.
Abstract:
PROBLEM TO BE SOLVED: To provide various types of pressure regulation means for reducing a pressure gradient in a liquid supply system of a lithographic apparatus.SOLUTION: The liquid supply system has a liquid confinement structure configured to at least partially confine a liquid between a projection system and a substrate table of the lithographic apparatus. A high pressure gradient may cause particulate contamination in the liquid supply system and/or liquid confinement structure. A pressure gradient can be reduced by, for example, the use of slow switching in one or more valves, a bleed flow around or through one or more valves, diversion of liquid to a drain rather than or in addition to switching a valve off, a pressure regulator or flow restrictor to prevent shock waves, and a buffer liquid/damper to compensate for pressure fluctuation.
Abstract:
PROBLEM TO BE SOLVED: To provide a system that reduces lithography errors arising from an immersion liquid.SOLUTION: A lithographic apparatus includes: an illumination system configured to condition a radiation beam; a support constructed to support a patterning device capable of imparting a pattern to the radiation beam in its cross section to form a patterned radiation beam; a substrate table constructed to hold a substrate; a projection system configured to project the patterned radiation beam onto a target portion of the substrate; a liquid supply system configured to at least partly fill a space between a final element of the projection system and the substrate with a liquid; a seal member arranged to substantially contain the liquid within the space between the final element of the projection system and the substrate; and elements to control and/or compensate for evaporation of the immersion liquid from the substrate.
Abstract:
PROBLEM TO BE SOLVED: To reduce effect of thermal expansion and thermal contraction in a liquid-immersion system using a supply system for supplying an immersion liquid to a substrate and/or a local area of a substrate table. SOLUTION: The lithographic apparatus includes a heater 400 and/or a temperature sensor 500 on a surface. The surface is a surface of at least one selected from the substrate table structured to support the substrate on a substrate support area, a liquid handling system, a projection system, a surface of a lattice of a positional measurement device or a sensor, and/or an exchange bridge. A nodal plate 600 is further included so as to support the substrate. The surface, on which the heater and/or temperature sensor are formed, is a surface of the nodal plate. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system that reduces uneven cooling of an object so that the object may be maintained at a substantially uniform temperature. SOLUTION: A lithographic apparatus is provided that includes a substrate holder configured to hold a substrate, and a heat pipe configured to maintain the substrate holder at a substantially uniform temperature. The heat pipe has a chamber containing a liquid reservoir and a vapor space, and a heating element at least partly in contact with liquid in the chamber. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system for reducing the non-uniform cooling of an object such that the object is maintained at a substantially uniform temperature. SOLUTION: The heat pipe maintains the object at a substantially uniform temperature. The heat pipe includes a liquid reservoir and a vapor space, a chamber with one part defined by a condensation face, and a liquid transport device applying force adding to gravity to a liquid and transporting the liquid from the condensation face to the reservoir. The condensation face is formed such that a condensation liquid is moved toward the liquid transport device along the condensation face. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce effect of thermal expansion and thermal contraction in a liquid-immersion system using a supply system for supplying an immersion liquid to a substrate and/or a local area of a substrate table. SOLUTION: The lithographic apparatus includes a substrate table configured to support the substrate on a substrate supporting area and including a plurality of heaters 400 and/or temperature sensors 500 arranged adjacently to a center part of the substrate supporting area. The plurality of heaters and/or sensors are elongated in a parallel direction substantially, and extend over the substrate support area from one edge end part to an opposite edge end part. A time when they are under a projection system during a period of imaging becomes shorter than a case where an elongated direction of the heaters and/or sensors are perpendicularly oriented to a first direction. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid handling structure that reduces a change in refractive index and a focusing error resulting from a temperature change in a space by reducing a temperature change while in the fluid handling structure of immersion liquid provided to the space by the fluid handling structure.SOLUTION: The fluid handling structure is configured to supply and confine immersion liquid to a space defined between a projection system and a contacting surface facing to the fluid handling structure. The fluid handling structure includes a supply passage formed therein for passing fluid through the fluid handling structure from the outside to the space, and a heat insulator positioned at least partly adjacent to the supply passage in order to thermally insulate fluid in the supply passage from a heat load induced in the fluid handling structure.
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion lithographic device capable of keeping the position of a liquid as constant as possible by controlling the position of an immersion liquid in the immersion lithographic device.SOLUTION: The immersion lithographic device includes a curved surface that is curved so that drainage force of surface tension acts in a certain direction on a film of an immersion liquid on the curved surface. In relation to a liquid trapping structure constructed or configured to trap a liquid in an immersion space between a final element of a projection system and a board table and/or a board supported to the board table, a liquid trapping structure is also provided including a curved surface that is curved so that drainage force of surface tension acts in a certain direction on a film of an immersion liquid on the curved surface.