Film forming apparatus

A film forming apparatus includes a rotation shaft which is connected to a rotation stage. The rotation stage is accommodated in an inner space of a susceptor, holds a plurality of workpieces, and rotates the workpieces around the central axis. A gas flow along a direction orthogonal to the central...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kobayashi, Hirokatsu, Harashima, Masayuki
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A film forming apparatus includes a rotation shaft which is connected to a rotation stage. The rotation stage is accommodated in an inner space of a susceptor, holds a plurality of workpieces, and rotates the workpieces around the central axis. A gas flow along a direction orthogonal to the central axis from an outside of the rotation stage is formed in the susceptor. A wall portion of the susceptor facing a lower surface of the rotation stage includes an intermediate area defined by a first circle larger than a minimum distance between the central axis and the plurality of placing areas and a second circle smaller than a maximum distance between the central axis and the plurality of placing areas. One or more of through holes are formed in the intermediate area.