Patent ID: 6592709
Filing Date: 2003-07-15
Classification: H01J

Abstract:
A plasma processing apparatus, comprising:a chamber body comprising a floor and a sidewall defining an enclosure; a substrate support member disposed in the enclosure and defining a substrate support surface; an annular gas manifold disposed at an upper end of the chamber body and forming a central gas manifold opening; wherein the annular gas manifold comprises a plurality of processing fluid outlets disposed symmetrically and annularly around a processing region; an annular energy transmissive member disposed on the gas manifold and forming a central opening registered with the central gas manifold opening; a plasma generating assembly disposed around the energy transmissive member; and a pumping assembly coupled to the energy transmissive member, wherein the pumping assembly defines a central exhaust port; wherein the processing region is defined between the substrate support surface and the central exhaust port; wherein the central exhaust port, the substrate support surface, the central opening of the energy transmissive member and the central gas manifold opening are disposed on a common central axis, so that the central exhaust port is disposed over and facing the substrate support surface; and wherein a central unobstructed exhaust pathway is defined between the substrate support surface and the central exhaust port.