Patent ID: 9640384
Date: 2017-05-02
CPC Classifications: H01L

Claim:
1. A substrate cleaning method, comprising: holding and rotating a substrate; imparting an ultrasonic vibration energy to deaerated pure water and then supplying the deaerated pure water onto a surface of the substrate to form a film of the deaerated pure water on the surface of the substrate; spraying a mist of deaerated pure water from at least one spray nozzle into an inert gas atmosphere to incorporate an inert gas into the mist of deaerated pure water; and supplying the mist of deaerated pure water that has passed through the inert gas atmosphere onto the film of the deaerated pure water to increase a concentration of the inert gas dissolved in the film of the deaerated pure water, thereby cleaning the surface of the substrate with the film of the deaerated pure water having the increased concentration of the inert gas.