Solution treatment apparatus and solution treatment method
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United States of America Patent
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Jan 30, 2018
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app pub date -
Jun 30, 2017
filing date -
Feb 27, 2012
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Abstract
A solution treatment apparatus connected to a supply nozzle that supplies a treatment solution to a substrate, includes: a supply pipeline connecting a treatment solution storage container and the supply nozzle; a filter apparatus provided in the supply pipeline; a pump on a secondary side of the filter apparatus; a circulation pipeline connecting a discharge side of the pump and an intake side of the filter apparatus; a supply control valve provided in the supply pipeline on a secondary side of the pump; a circulation control valve provided in the circulation pipeline; and a control unit, wherein the control unit opens the circulation control valve and drives the pump when supply of the treatment solution from the supply nozzle to the substrate is stopped by closing the supply control valve, to thereby circulate the treatment solution between the supply pipeline having the filter apparatus and the circulation pipeline.
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