Patent ID: 6312569
Filing Date: 2001-11-06
Classification: C23C,Y10S

Abstract:
A chemical vapor deposition apparatus comprising:a hermetic deposition chamber containing a vertically moveable substrate holding section for supporting a substrate;a gas supply head opposing said substrate holding section for directing a gaseous feed material onto the substrate supported by said substrate holding section;a plasma generation device for selectively generating a plasma;a trapping member for capturing reaction particles dislodged from a bottom surface of said gas supply head and a top surface of said substrate holding section by sputtering ions in the plasma; anda trapping member supporting device for supporting said trapping member such that said trapping member is positioned between said substrate holding section and said gas supply head, wherein the plasma is selectively generated by said plasma generating device at a first location between said trapping member supported by said trapping member supporting device and said bottom surface of said gas supply head and a second location between said trapping member supported by said trapping member supporting device and said top surface of said substrate holding section.