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

Claim 12:
13. A deposition ring, comprising:
an annular band configured to rest on a lower ledge of a substrate support, the annular band having an upper surface and a lower surface, the lower surface including a radially inner portion and a radially outer portion, the step extending downward from the radially inner portion so that a thickness of the annular band increases from the radially inner 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, 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, wherein an upper surface of the inner lip is an uppermost surface of the deposition ring; and wherein a depth between the upper surface of the annular band and a horizontal portion of the upper surface of the inner lip is between about 6.0 mm and about 12.0 mm;
a first leg extending downwardly from adjacent an outer surface of the annular band, wherein the first leg is integral with at least a portion of the step;
a second leg extending radially outward from a bottom portion of the first leg; and
an outer lip extending upwardly from the second leg, wherein the first leg, the second leg, and the outer lip together define a channel, wherein the channel is disposed radially outward of and beneath a lowermost surface of the annular band, and wherein an upper surface of the outer lip is disposed vertically below the lower surface of the annular band.