Patent ID: 11881375
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A process chamber for processing a substrate, comprising:
a chamber body defining an interior volume therein;
a substrate support disposed in the interior volume of the chamber body, wherein the substrate support comprises:
a pedestal for supporting the substrate; and
a lift apparatus comprising:
a plurality of first lift pin assemblies having a plurality of first lift pins extending through the pedestal and configured to raise or lower a substrate;
a plurality of second lift pin assemblies having a plurality of second lift pins extending through the pedestal radially outward of the plurality of first lift pins;
an actuator; and
a lift assembly coupled to the actuator and configured to raise or lower each of the first lift pin assemblies and the second lift pin assemblies by movement of the actuator; and

a shadow ring disposed on the plurality of second lift pins.