Patent ID: 9336996
Filing Date: 2016-05-10
CPC Classification: H01J,H05H

Claim Text:
1. A plasma processing system for generating plasma to process at least a wafer and for optimizing distribution of generated plasma on the wafer, the plasma processing system comprising: a chuck for supporting said wafer; a chamber structure for containing said plasma, said chamber structure including a cylindrical chamber wall, said chamber structure further including a dielectric member disposed above said cylindrical chamber wall and coupled with said cylindrical chamber wall, said dielectric member comprising a one-piece structure having a top, a vertical wall and a flange as integral parts of the dielectric member, wherein the dielectric member is coupled to said cylindrical wall through said flange, wherein the flange includes a plurality of channels for transmitting one or more gases into the chamber structure, and wherein the top is disposed over said chuck; a set of top coils disposed above said top for initiating generation of said plasma, a horizontal bottom surface of said top being configured to be exposed to said plasma when said wafer is processed with said plasma; a set of side coils surrounding said vertical wall and disposed over at least a portion of said flange for affecting distribution of said plasma; and a shielding arrangement disposed between the set of side coils and the flange, a vertical inner surface of said vertical wall being configured to be exposed to said plasma when said wafer is processed with said plasma, the inner diameter of said vertical wall being smaller than the inner diameter of said cylindrical chamber wall; wherein the shielding arrangement is at least part of a gas manifold coupled with said flange for delivering said one or more gases to said plurality of channels, and wherein the shielding arrangement shields the plurality of channels from a magnetic field associated with the set of side coils.