Patent ID: 9576808
Date: 2017-02-21
CPC Classifications: B08B,H01L

Claim:
1. A substrate processing apparatus for processing a substrate, comprising: a substrate holding part for holding a substrate with a main surface thereof directed upward; a processing liquid supply part for supplying a processing liquid onto a center portion of said main surface of said substrate; a substrate rotating mechanism for rotating said substrate together with said substrate holding part; a chamber for containing said substrate holding part in an internal space thereof, said internal space being a sealed space; a pressure changing part for changing pressure in said internal space of said chamber; and a control part configured to control said processing liquid supply part, said substrate rotating mechanism, and said pressure changing part to continuously supply said processing liquid onto said center portion of said main surface of said substrate while rotating said substrate at a first rotational speed, to thereby coat said main surface of said substrate with said processing liquid, and after that to bring said internal space of said chamber into a pressurized atmosphere being higher than the atmospheric pressure, and in a space above said substrate in said pressurized atmosphere to continuously supply said processing liquid onto said center portion of said main surface of said substrate while rotating said substrate at a second rotational speed lower than the first rotational speed, to thereby perform a predetermined processing, wherein said chamber includes: a chamber bottom, a cylindrical chamber sidewall fixed to a periphery of said chamber bottom and having an upper opening, and a chamber cover closing said upper opening of said chamber sidewall to form said internal space of said chamber, and said pressure changing part includes: a suction part for sucking gas in said internal space of said chamber, and a gas supply part for supplying gas into said internal space of said chamber, and by supplying gas into said internal space from said gas supply part, pressure in said internal space of said chamber increases to be higher than the atmospheric pressure and said internal space is brought into said pressurized atmosphere.