Abstract:
PROBLEM TO BE SOLVED: To provide a vibration isolation system for an imprint lithographic apparatus, capable of improving a throughput of an imprint lithographic apparatus. SOLUTION: An imprint lithographic apparatus 100 includes an actuator 130 displacing an imprint template holder 110 relative to a substrate holder 120. A support structure 140 of the imprint template holder 110 and/or the substrate holder 120 is attached to a vibration isolation system 150 attached to a base 160. The vibration isolation system 150 isolates vibration of the support structure 140 relative to the base 160. A control unit controlling the actuator 130 in an imprint process controls an adjusting member of the vibration isolation system 150, and adjusts a dynamic characteristic of the vibration isolation system 150 during at least part of the imprint process to reduce a displacement of the support structure 140 relative to the base 160, the displacement being caused by a force acting the support structure 140. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce an influence of vibrations in a lithographic apparatus. SOLUTION: A lithographic apparatus transfers a pattern from a patterning device onto a substrate. This lithographic apparatus includes an acoustic sensor which measures first acoustic vibrations in a sensor measurement region of the lithographic apparatus. An actuator is provided at least in a region within the lithographic apparatus in order to generate second acoustic vibrations. Furthermore, a control device is provided which has a sensor input part for receiving a sensor signal of the acoustic sensor and an actuator output part for giving an actuator driving signal to the actuator. The control device drives the actuator so that the second acoustic vibrations cancel the first acoustic vibrations at least partially in the region. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce a possible impact of acoustic vibration to a part of a lithographic apparatus, and to thereby enhance the precision of the lithographic apparatus, overlay, or all other parameters. SOLUTION: A lithographic apparatus may be provided with an acoustic resonator to attenuate acoustic vibration in the lithographic apparatus. The acoustic resonator may include a Helmholtz resonator. The Helmholtz resonator may be provided with an active element to provide active damping and/or altering a spring characteristic of the mass spring assembly formed by the resonator. The resonator may be provided at a slit in a shield between the patterning device stage and the projection system to suppress the transfer of acoustical vibration caused by e.g. the movement of the patterning device stage to the projection system. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an improved lithographic apparatus, where vibration in a projection system or another module of the equipment caused by displacement is reduced. SOLUTION: The lithographic apparatus includes: an illumination system for attaching conditions to radial beams; a support for supporting a patterning device capable of giving a pattern to a section of the radial beams to form the patterning radial beams; a substrate table for holding a substrate; and the projection system for projecting the patterning radial beams onto a target portion of the substrate. The apparatus also includes: a sensor arranged to detect the vibration of the projection system in use; an actuator arranged to exert a force to the projection system in use; and the projection system for converting an output signal of the sensor to an actuator input signal in use so that vibration of the projection system is reduced by controlling the actuator by an input signal arranged to exert the force to the projection system during operation. COPYRIGHT: (C)2009,JPO&INPIT