Abstract:
PROBLEM TO BE SOLVED: To provide a substrate table of an immersion lithographic apparatus which is configured to prevent contamination with immersion liquid.SOLUTION: A substrate table WT comprises: a drainage ditch, that is, a barrier 40 surrounding an outer circumferential edge of a substrate W; and a barrier 100 surrounding other objects 20 such as a sensor positioned substantially on the same plane as an upper surface of the substrate W. Because the barriers 40 and 100 are configured to be able to collect all of liquid spilled from a liquid supply system while the substrate W is exposed, a risk of contamination of fine components in a lithographic projection apparatus is reduced.
Abstract:
PROBLEM TO BE SOLVED: To provide a device and a method for reducing contamination of an immersion liquid in a lithographic apparatus when a closing surface is used to confine liquid in a liquid supply system.SOLUTION: To avoid or reduce particulate contamination caused by the closing surface colliding with the liquid supply system. The closing surface is maintained at a prescribed distance away from the liquid supply system such that there is no collision between the closing surface and the liquid supply system, but the liquid is nonetheless confined.
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus which can be cleaned easily and effectively, and to provide a method of effectively cleaning an immersion lithographic apparatus.SOLUTION: An immersion lithographic projection apparatus having a megasonic transducer configured to clean a surface and a method of cleaning the immersion lithographic projection apparatus using megasonic waves through a liquid are disclosed. A flow, desirably a radial flow, is induced in the liquid.
Abstract:
PROBLEM TO BE SOLVED: To prevent or reduce contamination of an immersion lithographic apparatus.SOLUTION: The immersion lithographic apparatus is cleaned by use of a cleaning liquid consisting essentially of ultra-pure water and (a) a mixture of hydrogen peroxide and ozone, or (b) hydrogen peroxide at a concentration of up to 5%, or (c) ozone at a concentration of up to 50 ppm, or (d) oxygen at concentration of up to 10 ppm, or (e) any combination selected from (a)-(d).
Abstract:
PROBLEM TO BE SOLVED: To easily execute cleaning of contamination of a lithographic apparatus. SOLUTION: The outer (top) surface of the reflective member 100 is co-planar with an outer (top) surface of the substrate table WT. This allows the reflective member 100 to be moved under the liquid supply system 12 without turning off the supply of liquid or the leaking of liquid. In that way the immersion space can be kept full of liquid as the reflective member 100 is moved under the projection system PS so that the reflective member 100 can be used in line. Cleaning fluid is applied to the immersion space and the cleaning liquid extends between the barrier member 12 and the reflective member 100 to a porous member 21. If the under pressure applied to the other side of the porous member 21 is reduced, the meniscus extending between the liquid supply system 12 and the reflective member 100 which defines the outer most edge of liquid moves radially outwardly to the outer edge of the porous member 21. Thus, the cleaning fluid covers all of the porous member 21. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To supply a cleaning liquid, having a rate of a base liquid and an emulsified component within a desirable work region, to an immersion system to be cleaned. SOLUTION: A cleaning liquid supply apparatus is configured to supply an emulsified cleaning fluid to an immersion lithographic apparatus. The apparatus includes a mixer configured to mix an additive fluid from an additive fluid supply section and an immersion liquid from an immersion supply section so as to prepare the emulsified cleaning fluid, a sensor system configured to sense physical characteristics of the emulsified cleaning fluid, and a controller connected to the sensor and mixer. The controller controls the supply of the additive fluid from the additive fluid supply section to the mixer and physical characteristics of the emulsified cleaning fluid. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To moderate a defect induced by an immersion liquid in an immersion lithography projection apparatus where a liquid removal system surrounds a liquid supply system for providing liquid to a space between a projection system and a substrate. SOLUTION: The liquid removal system 100 is moveable relative to the liquid supply system (partially shown as a barrier member 12) and is controlled to have substantially zero velocity relative to the moving substrate table. The gap between the liquid supply system (partially shown as the barrier member 12) and the liquid removal system 100 may be covered and the atmosphere between the liquid supply system and the liquid removal system above the substrate table may be maintained so that the vapor pressure of liquid is relatively high. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To moderate a defect induced by an immersion liquid in an immersion lithography projection apparatus where a liquid removal system surrounds a liquid supply system for providing liquid to a space between a projection system and a substrate. SOLUTION: The liquid removal system 100 is moveable relative to the liquid supply system (partially shown as a barrier member 12) and controlled to have substantially zero velocity relative to the moving substrate table. The gap between the liquid supply system (partially shown as the barrier member 12) and the liquid removal system 100 may be covered and an atmosphere between the liquid supply system and the liquid removal system above the substrate table may be maintained so that the vapor pressure of liquid is relatively high. COPYRIGHT: (C)2011,JPO&INPIT
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.
Abstract:
PROBLEM TO BE SOLVED: To cope with a problem of contamination in a lithographic apparatus. SOLUTION: An immersion type lithographic apparatus includes an immersion system for filling at least partially an immersion space with an immersion liquid. The apparatus includes an indicator for indicating whether the portion of the immersion system should be cleaned or not, and a cleaning liquid supply system for supplying a cleaner to the portion of the lithographic apparatus. The cleaner is at least one of different cleaners. The cleaner or the combination of cleaners is selected to clean the contamination of different types or levels in the portion of the lithographic apparatus. The apparatus also includes a controller for control which of the cleaners should be supplied to the lithographic apparatus based on indication received from the indicator. COPYRIGHT: (C)2009,JPO&INPIT