Patent ID: 11961723
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A process kit, comprising:
a deposition ring configured to be disposed on a substrate support, the deposition ring comprising:
an annular band configured to rest on a lower ledge of the substrate support, the annular band having an upper surface and a lower surface, wherein the lower surface is configured to rest on the lower ledge, wherein the annular band includes a radially inner portion and a radially outer portion, wherein the lower surface includes a step that extends downward from the radially inner portion to the radially outer portion, so that a thickness of the annular band increases from the radially inner portion to the radially outer portion, wherein the step is disposed closer to a radially outermost surface of the annular band than a radially innermost surface of the annular band, and wherein an entirety of the upper surface of the annular band is substantially flat;
an inner lip extending upwards from the upper surface of the annular band and adjacent an inner surface of the annular band, wherein an inner surface of the inner lip and the inner surface of the annular band together form a central opening of the deposition ring, and wherein a depth between the upper surface of the annular band and a horizontal portion of an upper surface of the inner lip is between about 6.0 mm and about 12.0 mm, and wherein the upper surface of the inner lip is an uppermost surface of the deposition ring;
a channel disposed radially outward of and beneath a lowermost surface of the annular band; and
an outer lip extending upwardly and disposed radially outward of the channel, and wherein an upper surface of the outer lip is disposed vertically below the lower surface of the annular band, wherein the channel is defined by a first leg extending downward from the annular band, a second leg extending radially outward from a lower portion of the first leg, and the outer lip extending upward from a radially outer portion of the second leg, wherein the first leg is integral with at least a portion of the step.