Patent ID: 6655891
Filing Date: 2003-12-02
Classification: G03F,H01L,Y10S

Abstract:
A substrate treatment system comprising:a cassette table for mounting a cassette which has a front portion for loading and unloading a substrate and a cover detachably provided to said front portion; a process portion for processing the substrate stored in the cassette on the cassette table; a transfer arm mechanism for taking out the substrate from the cassette on the cassette table, transferring the substrate to the process portion and returning a processed substrate to the cassette on the cassette table; a partition member provided between the transfer arm mechanism and the cassette table, for separating an atmosphere on the transfer arm mechanism side from an atmosphere on the cassette table side; a passage for passing the substrate taken out from the cassette on the cassette table by the transfer arm mechanism and for passing the substrate to be returned to the cassette on the cassette table, said passage being formed on the partition member so as to face the front portion of the cassette on the cassette table; a cassette moving mechanism for moving the front portion of the cassette placed on the cassette table so as to be closer to the passage or to be farther from the passage; a cover removing mechanism for attaching or detaching of the cover to or from the front portion of the cassette; detection means for detecting at least one of the front portion and the cover of the cassette on the cassette table in the passage; and a controller for controlling the movement of the cassette moving mechanism and the cover removing mechanism based on data obtained by the detection means.