Patent ID: 6451161
Filing Date: 2002-09-17
Classification: H01J

Abstract:
An inductively coupled plasma reactor comprisinga chamber comprising a bottom plate, an upright side wall surrounding the bottom, and a flange hermetically connected to a free end of the upright side wall, wherein the flange has n apertures above the bottom plate, wherein n is an integer not less than 2; n dielectric windows which hermetically seals said n apertures of the flange to provide a plasma generation space confined by the dielectric window and the chamber, wherein n is defined as above; and n helical coils which are separately and uprightly disposed on said n dielectric windows with longitudinal axes of the n helical coils being parallel with one another, wherein n is an integer not less than 2, wherein n is defined as above; wherein said n helical coils are connected in series with an end of the resulting n helical coils connected in series being grounded and another end thereof being adapted to connect to a RF power source; or said n helical coils are connected in parallel with one ends of the n helical coils being grounded and another ends thereof being connected to m node, and said m nodes are adapted to connected to one or more RF power sources, wherein m is an integer less than n and greater than 0; and wherein each one of said n dielectric windows has a planar base and an integrally formed upright wall surrounding the planar base, wherein a free end of the upright wall of the dielectric window is hermetically connected to said flange so that the planar base of the dielectric window protrudes from a corresponding aperture of said n apertures of the flange of the chamber, or so that the planar base of the dielectric window protrudes into a corresponding aperture of said n apertures of the flange of the chamber, wherein said n helical coils are uprightly disposed on the planar bases of said n dielectric windows, wherein said flange has a plurality of first gas inlet holes at its edge, and a plurality of second gas inlet holes between said n apertures.