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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> Power circuits for reducing a number of power supply voltage taps required for sensing a resistive memory

> Light emitting device including plural barriers

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