Photocopying – Projection printing and copying cameras – Distortion introducing or rectifying
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Henry Hung (Department: 2851)
Photocopying
Projection printing and copying cameras
Distortion introducing or rectifying
C355S055000
Reexamination Certificate
active
07079219
ABSTRACT:
A method for manufacturing a semiconductor device, including obtaining a first dimension difference or ratio which shows a dimension difference or ratio of a latent images of a first and a second focus monitor marks, or a dimension difference or ratio of a first and a second focus monitor marks, calculating a first defocus value based on the first dimension difference or ratio, obtaining second characteristic showing defocus value characteristic for a pressure inside a chamber based on pairs of the pressure and defocus value, measuring the pressure, predicting the defocus value based on the measured pressure and the second characteristic, correcting the relationship between a focus position of an exposure light and a position on the optical axis of the second resist film in accordance with the predicted defocus value, and forming the latent image of the circuit pattern on the second photo resist film.
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Kabushiki Kaisha Toshiba
Nguyen Henry Hung
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