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US 6,634,116 B2Granted
Vacuum processing apparatus
AssigneeHitachi, Ltd.
InventorsShigekazu Kato, Kouji Nishihata, Tsunehiko Tsubone, Atsushi Itou
Life of this patent
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Abstract
A wafer conveyor system for use in a vacuum processing apparatus wherein the conveyor structure is provided with a transfer structure, and a robot apparatus is arranged on the transfer structure. The robot provides for rotation of the wafer in a horizontally from a position in a cassette to an opposite position of the cassette.
Claims5
A conveyor system for use in a vacuum processing apparatus, comprising:
- a cassette conveyor structure for conveying a cassette holding substrates to be processed in a vacuum condition to a vacuum processing apparatus provided with (1) a lock chamber and (2) a vacuum loader having a vacuum processing chamber;
- and
- a robot system to carry a substrate to the vacuum processing chamber,
- wherein:
- the cassette conveyor structure is provided with a transfer structure and a robot installed on the transfer structure,
- the cassette is provided with a window portion to take out the substrates and to return processed substrates to the cassette,
- the robot transfers the cassette onto a cassette mount table in a state that the window portion faces to the vacuum processing apparatus, and
- from a start to end of processing the substrates in the vacuum condition in the vacuum processing apparatus, including transfer of the substrates from and to the cassette, unprocessed wafers are taken out from the cassette, transferred one-by-one to the vacuum processing apparatus, and returned to their original positions in the cassette and stored there, without changing the position and posture of the cassette.
5 more elements
Dependencies are inferred from the claim text.