Patent ID: 11935732
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 6:
7. A process kit configured for placement about a sputtering target and a substrate support in a substrate processing chamber, the process kit comprising:
a shield configured to encircle the sputtering target, the shield comprising:
a cylindrical band having a top wall configured to surround the sputtering target and a bottom wall configured to surround the substrate support;
a sloped wall that extends downward and radially inward from the bottom wall of the cylindrical band, the sloped wall having a substantially straight profile; and
at least one gas hole located on a lower portion of the sloped wall to allow process gas to pass therethrough;, and
a ring assembly comprising:
a cover ring configured to encircle the substrate support, the cover ring comprising an annular wedge comprising an inclined top surface about the substrate support, the inclined top surface having an inner and outer periphery, a bulb-shaped protuberance about the outer periphery of the inclined top surface, a footing extending downward from the inclined top surface, a projecting brim about the inner periphery of the inclined top surface, and inner and outer cylindrical bands extending downward from the annular wedge;
wherein the at least one gas hole is located on the lower portion of the sloped wall such that the bulb-shaped protuberance of the cover ring blocks a line-of-sight between the at least one gas hole and an entrance to a chamber body cavity of the processing chamber when installed in the substrate processing chamber.