Semiconductor wafer transferring apparatus and boat for thermal

Material or article handling – Device for emptying portable receptacle – Nongravity type

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414225, B65G 104

Patent

active

051317990

ABSTRACT:
A wafer transferring method for transferring wafers between a cassette and a boat having grooves to hold the wafers, comprises the steps of providing an identification mechanism for positional alignment on the boat in advance, detecting the identification mechanism, and aligning the boat to a predetermined position based on a detection result and transferring the wafers from the cassette to the boat. A wafer transferring apparatus comprises a loading device for extracting wafers from a cassette and transferring the wafers onto a boat, a detection device for detecting an identification section provided on the boat in order to identify a wafer transferring position on the boat, a control device for acquiring the wafer transferring position on the boat based on a detection result attained from the detection device and controlling a mutual position between the boat and the cassette to come to a predetermined position.

REFERENCES:
patent: 3998333 (1976-12-01), Kamada
patent: 4449885 (1984-05-01), Hertel et al.
patent: 4466766 (1984-08-01), Geren et al.
patent: 4568234 (1986-02-01), Lee et al.
patent: 4687091 (1987-08-01), Sticht
patent: 4757890 (1988-07-01), Motoda
patent: 4782760 (1988-11-01), Rohrbach et al.

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