Patent ID: 9337004
Filing Date: 2016-05-10
CPC Classification: H01J

Claim Text:
1. A wafer processing system for use with a RF driver and a material supply source that is operable to supply a material, the RF driver being operable to generate a driving signal such that material supplied by the material supply source can be transformed into plasma and a wafer may be plasma processed, said wafer processing system comprising: an upper confinement chamber portion having a horizontally extending exposed bottom surface and a vertically extending portion; a lower confinement chamber portion having a horizontally extending exposed top surface and a vertically extending portion, said lower confinement chamber portion and the said upper confinement chamber portion detachably disposed in direct contact with each other via their corresponding vertically extending portions; a removable confinement ring consisting essentially of: a horizontally extending top annular wall outward of the exposed bottom surface of the upper confinement chamber portion, a horizontally extending bottom annular wall outward of the exposed top surface of the lower confinement chamber portion, and a vertically extending annular wall extending between outer peripheries of the respective horizontally extending top and bottom annular walls wherein an inner periphery of the horizontally extending bottom annular wall is radially outward of an inner periphery of the horizontally extending top annular wall; and an electro-static chuck having an electro-static chuck upper surface arranged to hold a wafer to be processed, wherein the exposed bottom surface of the upper confinement chamber portion, the exposed top surface of the lower confinement chamber portion, the electro-static chuck upper surface, and the removable confinement ring define a plasma forming space in which plasma can be generated when a wafer is processed.