Substrate holding system and exposure apparatus using the same

Details Substrate holding system and exposure apparatus using the same Substrate holding system and exposure apparatus using the same

2008-12-15

2010-02-09

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Electric charge generating or conducting means

Use of forces of electric charge or field

C361S230000

Reexamination Certificate

active

07660098

ABSTRACT:
A substrate holding system for holding a substrate based on vacuum attraction and electrostatic attraction including a rim configured to support the substrate, a protrusion for the electrostatic attraction, configured to support the substrate inside the rim, and a protrusion for the vacuum attraction, configured to support the substrate inside the rim. A substrate supporting surface area of the protrusion of the electrostatic attraction is larger than a substrate supporting surface area of the protrusion for the vacuum attraction.

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