MEASUREMENT APPARATUS, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHOD
First Claim
1. A measurement apparatus for measuring a position of a mark on a stage, the apparatus comprising:
- an imaging unit positioned with fixing with respect to a first member and configured to sense an image of the mark;
a first detector configured to detect a position of said stage with reference to a second member;
a second detector configured to detect fluctuation of a position of said first member with reference to said second member; and
a control unit configured to obtain the position of the mark from an image of the mark sensed by said imaging unit while controlling a relative position of said stage relative to said second member so as to reduce fluctuation of a relative position of the mark relative to said imaging unit due to the fluctuation of the position of said first member based on a detection result of said first detector and a detection result of said second detector.
1 Assignment
0 Petitions
Accused Products
Abstract
A measurement apparatus includes: an imaging unit positioned with fixing with respect to a first member; a first detector configured to detect a position of a stage with reference to a second member; a second detector configured to detect fluctuation of a position of the first member with reference to the second member; and a control unit configured to obtain the position of the mark from an image of the mark sensed by the imaging unit while controlling a relative position of the stage relative to the second member so as to reduce fluctuation of a relative position of the mark relative to the imaging unit due to the fluctuation of the position of the first member based on detection results of the first and second detectors.
6 Citations
18 Claims
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1. A measurement apparatus for measuring a position of a mark on a stage, the apparatus comprising:
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an imaging unit positioned with fixing with respect to a first member and configured to sense an image of the mark; a first detector configured to detect a position of said stage with reference to a second member; a second detector configured to detect fluctuation of a position of said first member with reference to said second member; and a control unit configured to obtain the position of the mark from an image of the mark sensed by said imaging unit while controlling a relative position of said stage relative to said second member so as to reduce fluctuation of a relative position of the mark relative to said imaging unit due to the fluctuation of the position of said first member based on a detection result of said first detector and a detection result of said second detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lithography apparatus for forming a pattern on a substrate, the apparatus comprising:
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an original stage configured to hold an original; a substrate stage configured to hold said substrate; a first member; a second member; and a measurement apparatus for measuring a position of a mark on at least one stage of said original stage and said substrate stage, wherein said measurement apparatus includes; an imaging unit positioned with fixing with respect to said first member and configured to sense an image of the mark; a first detector configured to detect a position of said stage with reference to said second member; a second detector configured to detect fluctuation of a position of said first member with reference to said second member; and a control unit configured to obtain the position of the mark from an image of the mark sensed by said imaging unit while controlling a relative position of said stage relative to said second member so as to reduce fluctuation of a relative position of the mark relative to said imaging unit due to the fluctuation of the position of said first member based on a detection result of said first detector and a detection result of said second detector. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of manufacturing an article, the method comprising:
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forming a pattern on a substrate by using a lithography apparatus; and processing said substrate on which the pattern has been formed to manufacture the article, wherein said lithography apparatus includes; an original stage configured to hold an original; a substrate stage configured to hold said substrate; a first member; a second member; and a measurement apparatus for measuring a position of a mark on at least one stage of said original stage and said substrate stage, wherein said measurement apparatus includes; an imaging unit positioned with fixing with respect to said first member and configured to sense an image of the mark; a first detector configured to detect a position of said stage with reference to said second member; a second detector configure to detect fluctuation of a position of said first member with reference to said second member; and a control unit configured to obtain the position of the mark from an image of the mark sensed by said imaging unit while controlling a relative position of said stage relative to said second member so as to reduce fluctuation of a relative position of the mark relative to said imaging unit due to the fluctuation of the position of said first member based on a detection result of said first detector and a detection result of said second detector.
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Specification