Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic device with a chuck constructed to hold a substrate table, to provide a stage device on which an object is arranged, and to provide a method of manufacturing a device. SOLUTION: Disclosed is the lithography device which includes: an illumination system constructed to adjust a radiation beam; a supporter constructed to support a patterning device capable of generating a pattern imparted emitted beam by giving a pattern on a cross section of an emitted beam; a substrate table constructed to hold a substrate; a projection system constructed to project the pattern imparted radiation beam to a target part of the substrate; a chuck constructed to hold the substrate table; a positioning device for displacing the chuck in use; and a control unit constructed to control the positioning device. The control unit drives the positioning device to excite the chuck by substantially dynamical force that enables deformation of the chuck before positioning the patterning device. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus including a chuck constructed to hold a substrate table, a stage apparatus for positioning an object, and a device manufacturing method.SOLUTION: The lithographic apparatus comprises: an illumination system IL configured to condition a radiation beam; a support MT constructed to support a patterning device MA which is capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam; a substrate table WT constructed to hold a substrate W; a projection system PS configured to project the patterned radiation beam onto a target portion of the substrate; a chuck constructed to hold the substrate table WT; a positioning device for, in use, displacing the chuck; and a control unit configured to control the positioning device. The control unit is arranged to drive the positioning device to excite the chuck by a substantially dynamic force to enable deformation of the chuck.
Abstract:
PROBLEM TO BE SOLVED: To provide a wafer alignment apparatus having reduced tilt sensitivity related to tilt of optical markers on a wafer. SOLUTION: A substrate alignment system comprises a light source generating incoming light beams IB and IB2, which fall on a substrate composed of gratings positioned so as to generate at least one diffraction order, and optical equipment 1 which forms an image according to at least one diffraction order with a sensor device DET. The system is equipped with an aperture means TA, having apertures PH1 and PH2 at predetermined positions to pass structure-diffracted beams DB1 and DB2, the structure-diffracted beams DB1 and DB2 have diffracted beam diameters BD1 and BD2 on the faces of the apertures PH1 and PH2, respectively; and the diffracted beam diameters BD1 and BD2 are greater than the diameters of the apertures PH1 and PH2, respectively. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
A wafer or substrate alignment system for a lithographic apparatus, capable of exhibiting reduced tilt sensitivity, is presented herein. In particular, the substrate alignment system detects a position of a substrate relative to a position of a patterning device and includes a source configured to generate an incoming optical beam, at least one grating, provided on the substrate, having a diffracting length, in which the at least one grating is configured to generate at least one diffraction order of constituent diffracted beams based on an interaction with the incoming optical beam over the diffracting length. The system further includes an optical device, configured to image the at least one diffracted order on a sensor device, and includes aperture at a predetermined location to allow the constituent diffracted beams to pass through. The optical device is arranged to broaden the constituent diffracted beams such that a beam diameter of the constituent diffracted beams is larger than a diameter of the aperture, in order to reduce the sensitivity to tilt.