Patent ID: 9162337
Filing Date: 2015-10-20
Classification: B24B

Abstract:
1. A polishing apparatus, comprising: a pure water supply line configured to supply deaerated pure water into the polishing apparatus; a gas dissolving unit coupled to the pure water supply line and configured to dissolve a gas in the deaerated pure water to produce gas-dissolved pure water; a gas-dissolved pure water delivery line coupled to the gas dissolving unit and configured to deliver the gas-dissolved pure water; an ultrasonic cleaning unit having a fluid passage coupled to the gas-dissolved pure water delivery line and configured to impart an ultrasonic vibration energy to the gas-dissolved pure water when flowing in the fluid passage, the fluid passage having a jet orifice oriented toward at least one of mechanisms of the polishing apparatus; and a controller configured to control the gas dissolving unit and the ultrasonic cleaning unit.