Abstract:
PROBLEM TO BE SOLVED: To provide a radiation beam modification apparatus and method suitable for usage in an EUV lithographic apparatus. SOLUTION: This radiation beam modification apparatus which controls a characteristic of a radiation beam in a lithographic apparatus includes a flexible sheet formed with a plurality of apertures, and a positioning device including a first rotary member and a second rotary member, wherein a first end of the flexible sheet is connected to the first rotary member, a second end of the flexible sheet is connected to the second rotary member, and the central part of the flexible sheet extends between the first rotary member and the second rotary member. The apertures are used for controlling the numerical aperture of a projection system of the lithographic apparatus. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of highly precisely adjusting a measuring optical system of a lithographic apparatus. SOLUTION: In the lithographic apparatus, a substrate table constituted to hold a substrate is movable to transfer the substrate between a substrate measuring position and a substrate processing position. The lithographic apparatus also includes a measuring system constituted to measure at least one aspect or a characteristic of the substrate when the substrate table holds the substrate in the measuring position. The measuring system is constituted to guide at least one measuring beam and/or a field toward the front surface of the substrate. A projection system is constituted to project a patterned radiation beam onto the target of the substrate when the substrate table holds the substrate in the substrate processing position. An adjusting system is constituted to supply adjusting fluid to at least a part of the path of the measuring beam and/or the field of the measuring system to adjust the part of the path. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a projection system exhibiting a lower sensitivity to vibration and disturbance. SOLUTION: The projection system PL comprising at least one projector 10 arranged to receive a projection beam PB coming from a first object MA and to project that projection beam to a second object W is further provided with a sensor 11 for measuring a spatial orientation of the at least one projector 10, and a processing unit 40 arranged to be connected with at least one sensor 11. The processing unit 40 is further arranged to be connected with positioning units PW and PM for adjusting the position of at least one of the first object MA and the second object W based on the spatial orientation of at least one projector 10 thus measured. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress transmission of undesirable vibrations with respect to a lithography device and a device manufacturing method. SOLUTION: The lithography device includes a projection system configured to project an image on a substrate, a substrate table configured to support the substrate, a first chamber including the projection system, and a second chamber including the substrate table and first frame. The device includes a base frame configured so as to support the second chamber and an intermediate frame coupled to the base frame. The intermediate frame is configured to separate the first chamber and the second chamber. The device includes a support coupled to the first frame. The support is configured to support the first chamber through coupled openings that the intermediate frame and second chamber have. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus in which liquid can be drained through a gap between, for example, an edge of an object and a substrate table on which the object is set. SOLUTION: The liquid immersion lithographic apparatus has a drain formed for draining the liquid through the gap between an edge of a substrate and the substrate table on which the substrate is supported. The drain is provided with a means which feeds the liquid to the drain irrespective of a position of the substrate table and/or a means which saturates gas in the drain. These means reduce fluctuation in heat loss due to evaporation of the liquid in the drain. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a projection system having lower sensitivity with respect to vibration and disturbance. SOLUTION: The projection system comprises at least one projection device 10, configured to receive a projection beam PB coming from a first object MA and to project the projection beam to a second object W. The projection system PL further comprises a sensor 11 for measuring the spatial orientation of the at least one projection device 10. The projection system PL comprises a processing unit 40 which is arranged to communicate with the at least one sensor 11. The processing unit 40 is further arranged to communicate with positioning devices PW and PM, which are arranged to adjust the position of at least one of the first MA and second object W, based on the measured spatial orientation of the at least one projection device 10. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A method according to one embodiment of the invention may be performed using a calibration plate (38) having at least one alignment marker (40) and at least one height profile (46). First, the calibration plate is positioned using an alignment sensor. Then the height profile is measured by a height sensor. Then the calibration plate is rotated by substantially 180 degrees and the two operations are repeated. This procedure results in two measured height profiles, which are compared in order to find a best fit. The amount of shift performed to find the best fit is used to determine a distance between the alignment marker and the X,Y position of the measurement point of the height sensor.
Abstract:
A method according to one embodiment of the invention may be performed using a calibration plate (38) having at least one alignment marker (40) and at least one height profile (46). First, the calibration plate is positioned using an alignment sensor. Then the height profile is measured by a height sensor. Then the calibration plate is rotated by substantially 180 degrees and the two operations are repeated. This procedure results in two measured height profiles, which are compared in order to find a best fit. The amount of shift performed to find the best fit is used to determine a distance between the alignment marker and the X,Y position of the measurement point of the height sensor.
Abstract:
A method for compensating for an exposure error in an exposure process of a lithographic apparatus that comprises a substrate table, the method comprising: obtaining a dose measurement indicative of a dose of IR radiation that reaches substrate level, wherein the dose measurement can be used to calculate an amount of IR radiation absorbed by an object in the lithographic apparatus during an exposure process; and using the dose measurement to control the exposure process so as to compensate for an exposure error associated with the IR radiation absorbed by the object during the exposure process.
Abstract:
A method for calibrating an encoder in a lithographic apparatus, the encoder including a sensor and a grating, the encoder configured to measure a position of a moveable support of the lithographic apparatus, the method comprising: measuring a position of the moveable support using an interferometer; and calibrating the encoder based on the position of the moveable support measured by the interferometer.