Exposure apparatus

Details Exposure apparatus Exposure apparatus

2007-06-18

2009-06-23

Nguyen, Hung Henry (Department: 2851)

Photocopying

Projection printing and copying cameras

Detailed holder for photosensitive paper

C355S075000

Reexamination Certificate

active

07551264

ABSTRACT:
Two independent fine adjustment stages are arranged on one coarse adjustment stage to simultaneously perform all of focus measurement and part of alignment measurement in parallel with an exposure operation. A method of transporting a wafer together with a chuck is adopted as a precondition. Alignment of a pattern on a wafer with a chuck is performed before the chuck is mounted on each fine adjustment stage.

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