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US 7,397,648 B2Granted
Electrostatic chuck including a heater mechanism
AssigneeMomentive Performance Materials Inc.
InventorsAkinobu Otaka, Kazuyoshi Yamazaki
Life of this patent
Estimating the term…
Abstract
An electrostatic chuck comprises a main body with a mounting surface and an opposed surface facing away from the mounting surface. At least one chucking electrode extends along the mounting surface of the main body and a first heater layer extends along the opposed surface of the main body. The electrostatic chuck can be used to heat and electrostatic ally attract a work piece, such as a wafer, to a work piece support surface during various processing techniques.
Claims20
An electrostatic chuck comprising:
- a main body encapsulated in an insulating coating layer, said main body comprising a mounting surface, an opposed surface facing away from the mounting surface, and a peripheral surface;
- at least one chucking electrode extending along the mounting surface of the main body;
- a first heater layer extending along the opposed surface of the main body;
- a second heater layer extending along the peripheral surface of the main body;
- a plurality of terminals located on said peripheral surface, and
- a first heat retainer adapted to inhibit heat transfer away from the main body, wherein the first heat retainer extends along the opposed surface of the main body and comprises a plurality of adjacent disks.
3 more elements
An electrostatic chuck comprising:
- a main body encapsulated in an insulating coating layer, said main body comprising a mounting surface and an opposed surface facing away from the mounting surface;
- at least one chucking electrode extending along the mounting surface of the main body;
- a heater layer extending along the opposed surface of the main body;
- and a heat retainer adapted to inhibit heat transfer away from the main body and extending along the opposed surface of the main body, wherein the heat retainer comprises a plurality of adjacent disks.
1 more element
An electrostatic chuck comprising:
- a main body encapsulated in an insulating coating layer, said main body comprising a mounting surface and an opposed surface facing away from the mounting surface;
- at least one chucking electrode extending along the mounting surface of the main body;
- a heater layer extending along the opposed surface of the main body;
- and a heat retainer adapted to inhibit heat transfer away from the main body and extending along the opposed surface of the main body, wherein the heat retainer comprises a ceramic felt insulation material.
1 more element
An electrostatic chuck comprising:
- a main body encapsulated in an insulating coating layer, said main body comprising a plate including a mounting surface and an opposed surface facing away from the mounting surface, and a reinforcing member extending away from the plate, wherein the reinforcing member is adapted to inhibit flexing of the plate;
- at least one chucking electrode extending along the mounting surface of the plate;
- a heater layer extending along the opposed surface of the plate, wherein said insulating coating layer comprises at least one of a nitride, carbide, carbonitride or oxynitride of elements selected from a group consisting of B, Al, Si, Ga, refractory hard metals, transition metals, and rare earth metals, or complexes and or combinations thereof:
- wherein the reinforcing member comprises a wall having a first end portion attached to the plate and a second end portion offset from the plate wherein the wall extends from the first end portion to the second end portion
- wherein the wall and the plate define an interior cavity
- wherein the electrostatic chuck further comprises a heat retainer adapted to inhibit heat transfer away from the main body, wherein the heat retainer is positioned in the interior cavity and extends along the opposed surface of the main body and wherein the heat retainer comprises a plurality of adjacent disks, and each of the plurality of disks includes an outer diameter that is slightly less than a cavity diameter of the interior cavity.
3 more elements
An electrostatic chuck comprising:
- a main body encapsulated in an insulating coating layer, said main body comprising a plate including a mounting surface and an opposed surface facing away from the mounting surface, and a reinforcing member extending away from the plate, wherein the reinforcing member is adapted to inhibit flexing of the plate;
- at least one chucking electrode extending along the mounting surface of the plate;
- and
- a heater layer extending along the opposed surface of the plate, wherein said insulating coating layer comprises at least one of a nitride, carbide, carbonitride or oxynitride of elements selected from a group consisting of B, Al, Si, Ga, refractory hard metals, transition metals, and rare earth metals, or complexes and/or combinations thereof, wherein the reinforcing member comprises a wall having a first end portion attached to the plate and a second end portion offset from the plate wherein the wall extends from the first end portion to the second end portion, and wherein the wall includes a plurality of apertures adapted to inhibit heat transfer from the first end portion towards the second end portion of the wall.
1 more element
Dependencies are inferred from the claim text.