Patent ID: 9662685
Date: 2017-05-30
CPC Classifications: B08B,H01L

Claim:
1. A substrate processing apparatus comprising: a processing chamber configured to process a substrate by a supercritical fluid or a subcritical fluid; a fluid supplying unit configured to supply a fluid to the processing chamber; a fluid supplying path provided with a booster pump and a heating mechanism and configured to connect the fluid supplying unit with the processing chamber and allow the fluid to pass therein, a gas fluid supplied from the fluid supplying unit to pass the fluid supplying path being changed into one of a liquid fluid, the supercritical fluid and the subcritical fluid by the booster pump and the heating mechanism while passing through the fluid supplying path; a first filter provided at a downstream side of the booster pump and the heating mechanism in the fluid supplying path and configured as a gas filter to collect particles within the gas fluid; and a second filter provided at a downstream side of the first filter in the fluid supplying path and configured as a liquid filter to collect, in one of the liquid fluid, the supercritical fluid and the subcritical fluid, aggregated particles adsorbed to the first filter when the gas fluid passes through the first filter, wherein a size of particles capable of passing through the second filter is smaller than a size of particles capable of passing through the first filter when compared by passing one of the liquid fluid, the supercritical fluid and the subcritical fluid through the first filter and the second filter.