Patent ID: 7267725
Filing Date: 2007-09-11
Classification: C23C,F16J

Abstract:
1. A thin-film deposition apparatus comprising: a reaction chamber provided with a showerhead and an annular exhaust duct having an annular slit; a substrate transfer chamber disposed underneath the reaction chamber; a susceptor which is movable between the reaction chamber and the substrate transfer chamber, said susceptor having a radially-extending step portion; a ring-shaped separation wall for separating the reaction chamber and the substrate transfer chamber at a processing position where the susceptor is positioned inside the ring-shaped separation wall, and an upper surface of the susceptor is substantially aligned with an upper surface of the separation wall in an direction perpendicular to an axial direction of the susceptor, said separation wall and said annular exhaust duct being disposed coaxially with the susceptor, said upper surface of the separation wall constituting a lower part of the annular slit of the annular exhaust duct; and a conductive sealing member which is interposed between the radially-extending step portion and the separation wall to seal the reaction chamber from the substrate transfer chamber when the susceptor is at the processing position.