Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic projection apparatus in which measures are taken to prevent or reduce presence of bubbles in liquid through which radiated projection beam passes.SOLUTION: This provision 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 toward radial outside direction from an optical axis in the vicinity of an edge of the substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for cleaning the inside of a immersion lithographic apparatus.SOLUTION: In particular, cleaning fluid may be introduced into a space between a projection system and a substrate table of a lithographic apparatus by using a liquid supply system of the lithographic apparatus. Additionally or alternatively, a cleaning device may be installed on the substrate table, and an ultrasonic emitter may be provided to produce ultrasonic liquid.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for ensuring an easier use of an array of individually controllable elements in a lithographic apparatus.SOLUTION: The present invention relates to an apparatus and a method used to calibrate an array of individually controllable elements in a lithographic apparatus. A calibration unit can switch between a first state in which modulated radiation beam enters into a projection system for projecting the modulated radiation beam onto a substrate, and a second state in which a portion of the modulated radiation beam is inspected by the calibration unit. The calibration unit generates or updates calibration data, based on inspection result of the modulated radiation beam. An array controller uses the calibration data to provide control signals to elements of the array of individually controllable elements. These elements are configured to respond to the control signals.
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion lithographic projection apparatus.SOLUTION: The immersion lithographic projection apparatus is disclosed in which an immersion liquid is enclosed between a final element of a projection system and a substrate. The use of both hydrophobic and hydrophilic layers on various elements of the apparatus is disclosed. The use can help to prevent the formation of bubbles in the immersion liquid and to reduce a residue on the elements after being immersed in the immersion liquid.
Abstract:
PROBLEM TO BE SOLVED: To provide a lithography projection apparatus in which space between a substrate and a projection system is filled with liquid while minimizing the quantity of the liquid required to be accelerated during a stage operation. SOLUTION: In the lithography projection apparatus, space between a final element of the projection system and a substrate table of the lithography projection apparatus is surrounded by a sealing member. A gas seal is formed between the sealing member and a plane of the substrate and the liquid is confined in the space. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion lithographic apparatus suitable for preventing or reducing production of bubbles by preventing the bubbles from escaping from one or more gaps in a substrate table to a path of a radiation beam, or extracting the bubbles that may be produced in the gaps. SOLUTION: This lithographic apparatus is configured to project an image of a desired pattern on a substrate W, which is held on a substrate table WT, through a liquid. In the lithographic apparatus, gaps 22 are formed inside a surface of the substrate table between the substrate table and an outer edge of a substrate, or between the substrate table and another component that is arranged thereon and brought into contact with the liquid in normal use. The lithographic apparatus is composed by arranging, in the gap, a bubble holding device configured to hold bubbles 24 that may be produced in the gap. COPYRIGHT: (C)2010,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)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce distortion of an image due to temperature gradient of a substrate and an immersion liquid in a liquid immersion projection exposure apparatus. SOLUTION: In the liquid immersion lithographic apparatus including a temperature control unit for adjusting temperatures of a member in a final stage of the projection exposure apparatus PL, a substrate, and the immersion liquid to a common target temperature T4, the temperature gradient is reduced by adjusting total temperatures of these components. By doing so, matching properties of image formation and total performance are improved. Means to be used includes control of a flow rate and temperature of the immersion liquid by a feedback circuit. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for more easily using an array of individually controllable elements in a lithographic apparatus. SOLUTION: The present invention relates to an apparatus and a method used to calibrate an array of individually controllable elements within a lithographic apparatus. A calibration unit can switch between a first state in which modulated beam of radiation passes into a projection system for projecting the modulated beam of radiation onto a substrate, and a second state in which a portion of the modulated beam of radiation is inspected by the calibration unit. The calibration unit generates calibration data, or alternatively, updates calibration data, based on the inspection of the modulated beam of radiation. An array controller uses the calibration data to provide control signals to elements of an array of individually controllable elements which are subsequently configured in response to the control signals. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of detecting contamination of a liquid containment system and/or a method of determining the time, at which the liquid containment system of an immersion lithography apparatus needs cleaning. SOLUTION: A method of operating the liquid containment system of the immersion lithography apparatus is disclosed. Performances of the liquid containment system are measured by several different methods. On the basis of a result of the performance measurement, for example, a signal showing that it is required to take aid measure is generated. COPYRIGHT: (C)2009,JPO&INPIT