Patent ID: 11894255
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A substrate support for use in a substrate processing chamber, comprising:
a ceramic plate having a first side configured to support a substrate and a second side opposite the first side, wherein the ceramic plate includes an electrode embedded in the ceramic plate;
a first cooling plate coupled to the second side of the ceramic plate;
a ceramic ring disposed about the ceramic plate and having a first side and a second side opposite the first side, wherein the ceramic ring includes one or more chucking electrodes and a heating element disposed in the ceramic ring, wherein the ceramic ring is spaced apart from the ceramic plate and the first cooling plate;
an edge ring disposed on the ceramic ring;
a second cooling plate coupled to the second side of the ceramic ring, wherein the second cooling plate is a ring disposed about the first cooling plate with a gap disposed between the first cooling plate and the second cooling plate;
wherein the second cooling plate is thermally isolated from the first cooling plate;
wherein the first cooling plate and the second cooling plate include coolant channels configured to circulate a coolant, wherein the coolant channels of the first cooling plate are fluidly independent from the coolant channels of the second cooling plate;
a first gas channel extending from the first side to the second side of the ceramic plate;
a second gas channel extending from the first side to the second side of the ceramic ring; and
one or more sealing elements disposed between:
the ceramic ring and the second cooling plate;
the first cooling plate and the second cooling plate; and
the ceramic ring and the edge ring, dimensioned and arranged to prevent a gas flow from the second gas channel into the gap disposed between the first cooling plate and the second cooling plate.