Apparatus and methods for real-time wafer chucking detection

Substrate supports, substrate support assemblies and methods of using the substrate supports are described. The substrate support has a support surface with at least two electrodes and a plurality of purge channels bounded by a seal band. A power supply connected to the electrodes configured as an e...

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Bibliographische Detailangaben
Hauptverfasser: Dan, Arkaprava, Baluja, Sanjeev, Ulavi, Tejas, Murtagh, Mike
Format: Patent
Sprache:eng
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Zusammenfassung:Substrate supports, substrate support assemblies and methods of using the substrate supports are described. The substrate support has a support surface with at least two electrodes and a plurality of purge channels bounded by a seal band. A power supply connected to the electrodes configured as an electrostatic chuck. A capacitance of the substrate is measured while on the substrate support to determine the chucking state of the substrate.