Photocopying – Projection printing and copying cameras – Step and repeat
Reexamination Certificate
2008-07-02
2011-11-29
Nguyen, Hung Henry (Department: 2882)
Photocopying
Projection printing and copying cameras
Step and repeat
C355S055000
Reexamination Certificate
active
08068211
ABSTRACT:
An exposure apparatus for exposing a shot region on a substrate includes a movable stage, a projection optical system, a measuring device configured to measure a position of a partial region of a surface of the substrate, and a controller configured to cause the measuring device to measure the position with respect to each of a plurality of measurement points of each of a plurality of shot regions, to determine a global shape of the surface based on the measured positions, to calculate a correction value with respect to each of the plurality of measurement points based on the determined global shape, and to move the stage based on measurement values corrected using the respective correction values corresponding to the respective measurement points.
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patent: 09-045608 (1997-02-01), None
Canon Kabushiki Kaisha
Nguyen Hung Henry
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