WAFER LIFT RING SYSTEM FOR WAFER TRANSFER
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United States of America Patent
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Issued Date -
Aug 17, 2017
app pub date -
Feb 8, 2017
filing date -
Feb 16, 2016
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A substrate support includes an inner portion arranged to support a substrate, a lift ring surrounding the inner portion, the lift ring arranged to support an outer edge of the substrate, and a controller configured to control an actuator to adjust a height of the lift ring relative to the inner portion by selectively raising and lowering at least one of the lift ring and the inner portion of the substrate support. To adjust the height of the lift ring, the controller selectively adjusts the height of the lift ring to a transfer height for transfer of the substrate to the lift ring and retrieval of the substrate from the lift ring, and adjusts the height of the lift ring to a processing height for processing of the substrate.
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