Processing system with increased cassette storage capacity

A system for processing semiconductor substrates includes a front-end with at least two vertical levels of input/output ports for transferring substrate cassettes into or out of the housing of the processing system. The front-end also includes at least one level of storage positions, e.g., two level...

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Bibliographische Detailangaben
Hauptverfasser: DE RIDDER CHRISTIANUS GERARDUS MARIA, DEN HARTOG EDWIN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A system for processing semiconductor substrates includes a front-end with at least two vertical levels of input/output ports for transferring substrate cassettes into or out of the housing of the processing system. The front-end also includes at least one level of storage positions, e.g., two levels of storage positions, which can be disposed between the two vertical levels of the input/output ports. The two vertical levels of storage positions can each be provided with two storage positions and each of two levels of input/output ports can be provided with accommodations for two cassettes, allowing for a total of eight cassettes to be accommodated at the front-end of the processing system. Inside the housing of the processing system, interior storage positions can be provided adjacent a wafer handling chamber and spaced apart from a cassette store having rotary platforms for housing cassettes. A single cassette handler can be used to access cassettes at each of the input/output ports and the interior storage positions.