Patent ID: 7793610
Filing Date: 2010-09-14
Classification: H01L

Abstract:
1. A liquid processing apparatus comprising: a substrate holding member configured to rotate along with a substrate held thereon in a horizontal state; a rotary cup configured to surround the substrate held on the substrate holding member and to rotate along with the substrate; a rotation mechanism configured to integratedly rotate the rotary cup and the substrate holding member; a liquid supply mechanism configured to supply a process liquid onto the substrate; and an exhaust/drain section configured to perform gas-exhausting and liquid-draining of the rotary cup, wherein the rotary cup includes an annular eaves portion, the exhaust/drain section comprises an annular drain cup and an annular exhaust cup, said annular exhaust cup surrounding the rotary cup and the annular drain cup, the drain cup collects a process liquid thrown off from the substrate through a first opening formed in the rotary cup below the annular eaves portion and discharges this process liquid from a drain port, the exhaust cup collects a gas component from around the rotary cup through a second opening formed in the exhaust cup above the annular eaves portion and discharges the gas component from an exhaust port, and a drain passage extending from the first opening to the drain port and an exhaust gas passage extending from the second opening to the exhaust port are formed separately from each other such that liquid-draining from the drain cup and gas-exhausting from the exhaust cup are performed independently of each other.