Scanning exposure apparatus

Details Scanning exposure apparatus Scanning exposure apparatus

2006-01-31

2006-01-31

Rutledge, D. (Department: 2851)

Photocopying

Projection printing and copying cameras

Step and repeat

C355S055000, C355S067000, C356S399000, C356S400000

Reexamination Certificate

active

06992751

ABSTRACT:
A scanning exposure apparatus which promptly analyzes a cause for a variation in exposure line width. The scanning exposure apparatus includes a mask stage on which a mask is placed, a wafer stage on which a wafer is placed, a focusing mechanism which detects surface position information of the wafer and adjustment means which adjusts the surface position of the wafer. Control means acquires pose information of the wafer adjusted by the adjustment means at the time of exposure and stores the pose information in a memory in association with preacquired surface shape information of an exposure area. A state in which the exposed surface of the wafer has been exposed with respect to exposure light is known from the pose information and the surface shape information.

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“Optical Microlithography XIV”, Christopher J. Progler, Feb. 27-Mar. 2, 2001, vol. 4346, Part 1, pp. 408 to 419.

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