TWI846591B
A substrate processing apparatus includes a holder having thereon an attraction surface configured to attract a substrate and including, as multiple regions in which attracting pressures for attracting the substrate are controlled independently, a first region having a circular shape and a second re...
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Format: | Patent |
Sprache: | chi |
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Zusammenfassung: | A substrate processing apparatus includes a holder having thereon an attraction surface configured to attract a substrate and including, as multiple regions in which attracting pressures for attracting the substrate are controlled independently, a first region having a circular shape and a second region having an annular shape and disposed at an outside of the first region in a diametrical direction; multiple attracting pressure generators configured to independently generate the attracting pressures respectively in the multiple regions forming the attraction surface; multiple attracting pressure adjusters configured to independently adjust the attracting pressures respectively generated by the attracting pressure generators; and a controller configured to control the multiple attracting pressure generators and the multiple attracting pressure adjusters. The controller generates different attracting pressures in at least a part of the first region and in at least a part of the second region. |
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