Patent ID: 8276540
Filing Date: 2012-10-02
Classification: H01J,H01L

Abstract:
1. A chamber component configured to be coupled to a plasma processing chamber, comprising: a dielectric chamber element configured to be coupled to a plasma processing chamber, said dielectric chamber element comprising a first surface on a supply side of said dielectric chamber element and a second surface on a process side of said dielectric chamber element, said process side opposing said supply side, wherein said dielectric chamber element comprises an opening having an interior surface that is formed through said dielectric chamber element from said first surface to said second surface; and a dielectric insert member insertable within said opening such that, when inserted within said opening, said dielectric insert member extends through and occupies at least a portion of said opening from said first surface of said dielectric chamber element to said second surface of said dielectric chamber element, said dielectric insert member comprising a groove formed in an outer surface of said dielectric insert member that extends along a helical path from an inlet at said supply side of said dielectric chamber element to an outlet at said process side of said dielectric chamber element, wherein the portion of said outer surface remaining after forming said groove in said outer surface contacts and mates with said interior surface of said opening in said dielectric chamber element when said dielectric insert member is inserted within said opening of said dielectric chamber element, wherein, when said dielectric insert member is inserted within said opening of said dielectric chamber element, a helical conduit extending through said dielectric chamber element from said supply side to said process side is formed by said interior surface of said opening and said groove in said outer surface of said dielectric insert element, said helical conduit configured to receive a process fluid at said inlet and to distribute said process fluid at said outlet, and wherein said dielectric chamber element and said dielectric insert member are configured to be immersed in an electric field utilized to generate plasma.