Abstract:
PROBLEM TO BE SOLVED: To provide an immersion lithographic projection apparatus. SOLUTION: The immersion lithographic projection apparatus is disclosed in which immersion liquid is provided between the last element of a projection system and a substrate. The use of both hydrophobic and hydrophilic layers on various elements of the apparatus is provided to help prevent formation of bubbles in the immersion liquid and to help reduce residue on the elements after being in contact with the immersion liquid. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid supply system minimizing pressure variation and/or temperature variation of liquid, without causing unnecessary disturbances due to mechanical vibration, in a lithographic projection apparatus. SOLUTION: Liquid is supplied to a reservoir 10 between a final element of a projection system PS and a substrate from an inlet 21. Overflow removes the liquid that is beyond a given height. Overflow is formed above the inlet, and accordingly, the liquid is newly replenished and the pressure in the liquid is kept at a substantially constant level, at all times. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus and a method used to obtain information indicative of the uniformity of a projection system of a lithographic apparatus. SOLUTION: An electromagnetic radiation beam is directed toward a projection system such that the radiation beam passes from a first end of the projection system to a second end of the projection system. The electromagnetic radiation beam is subsequently directed back toward the projection system such that the electromagnetic radiation beam passes from the second end of the projection system to the first end of the projection system. At least a part of the electromagnetic radiation beam is detected after the electromagnetic radiation beam has passed back through the projection system to obtain information indicative of the uniformity of the projection system. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for cleaning the inside of a liquid immersion lithographic apparatus. SOLUTION: A cleaning fluid is introduced into a space between the projection system and the substrate table of the lithographic apparatus using the liquid supply system of the lithographic apparatus. Additionally or replacing above, a cleaning device is installed on the substrate table, or an ultrasonic emitter is provided for generating an ultrasonic liquid. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid supply system which minimizes pressure variation and/or temperature change of liquid without causing unnecessary disturbance due to mechanical vibration, in a lithographic projection apparatus. SOLUTION: Liquid is supplied from an inlet 21 to a reservoir 10 between a final element of a projection system PS and a substrate. An overflow removes the liquid above a given level. The overflow is constructed above the inlet, whereby the liquid is constantly replenished and the pressure in the liquid remains substantially constant. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve focus latitude and/or to stabilize contrast control in an immersion lithographic apparatus, where the position of a focus changes when accelerating a substrate table during exposure. SOLUTION: A final element 50 in a projection system that is a parallel plate used for sealing a projection system PL against an immersion liquid 10 in immersion lithography changes an incidence angle of projection beams when the final element inclines to the optical axis of the device. Force generated by the immersion liquid is utilized passively, and the final element is moved, thus changing the focus continuously at all points on the substrate to improve the focus latitude. Some methods, such as a method for inclining the projection beams to the substrate, are disclosed. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus, a device manufacturing method and a substrate. SOLUTION: A substrate W is provided with a coating 4 of a material which is substantially transparent to a wavelength of a projection beam. The coating may be thicker than the wavelength of the projection beam and have a refractive index of the coating 4 such that the wavelength of the projection beam is shortened as the projection beam passes through the coating. This allows the imaging of smaller features on the substrate. Alternatively, the coating may be used with a liquid supply system and act to keep bubbles away from a radiation sensitive layer of the substrate. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic projection apparatus preventing the existence of bubbles in a liquid through which an emitted projection beam is passed, or taking countermeasures to reduce them. SOLUTION: This is performed, for example, by ensuring that a gap between a substrate and a substrate table is filled with an immersion liquid, or by inducing a local flow from an optical axis toward a radially outward side in the vicinity of the edge of the substrate. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus which includes an immersion liquid having a refractive index higher than that of water and has no possibility of agglomeration of contained particles during operation. SOLUTION: In a projection exposure type lithographic apparatus used as a stepper or a scanner, an aqueous solution of one or more alkali metal halides such as alkali metal fluoride, alkali metal chloride, and alkali metal bromide, is used as an immersion liquid having a refractive index higher than that of water. The refractive index is 1.5 or more. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus and a method of manufacturing a device configured to introduce an immersion liquid and a liquid supply system associated therewith into the lithographic apparatus so as to solve the problem of causing degradation in the accuracy of focus at the substrate and in the precision with which other parameters critical to imaging are controlled. SOLUTION: The immersion lithographic apparatus includes a liquid supply system member configured to contain a liquid in a space between a projection system of the lithographic apparatus and the substrate and a liquid supply system member compensator arranged to compensate an interaction between the liquid supply system member and substrate table. COPYRIGHT: (C)2006,JPO&NCIPI