Bipolar electrostatic chuck and method for using the same
First Claim
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1. An electrostatic chuck comprising:
- a chuck body; and
a plurality of independently replaceable electrostatic chuck assemblies mounted in an array across the chuck body to define a substrate support surface suitable for supporting a large area substrate, at least a first electrostatic chuck assembly of the plurality of electrostatic chuck assemblies operable independent of an operation of a second electrostatic chuck assembly of the plurality of electrostatic chuck assemblies, wherein the first electrostatic chuck assembly is laterally spaced apart from the second electrostatic chuck assembly to form a gap therebetween, and wherein the chuck body comprises;
a port aligned with and configured to flow gas into the gap defined between the first and second electrostatic chuck assemblies.
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Abstract
Described herein are an electrostatic chuck and method for using the same. In one example, an electrostatic chuck is provided that includes a plurality of independently replaceable electrostatic chuck assemblies mounted in an array across a chuck body. The electrostatic chuck assemblies define a substrate support surface suitable for supporting a large area substrate. At least a first electrostatic chuck assembly of the plurality of electrostatic chuck assemblies is operable independent of an operation of a second electrostatic chuck assembly of the plurality of electrostatic chuck assemblies. In yet another example, a method for chucking a substrate is provided.
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Citations
20 Claims
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1. An electrostatic chuck comprising:
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a chuck body; and a plurality of independently replaceable electrostatic chuck assemblies mounted in an array across the chuck body to define a substrate support surface suitable for supporting a large area substrate, at least a first electrostatic chuck assembly of the plurality of electrostatic chuck assemblies operable independent of an operation of a second electrostatic chuck assembly of the plurality of electrostatic chuck assemblies, wherein the first electrostatic chuck assembly is laterally spaced apart from the second electrostatic chuck assembly to form a gap therebetween, and wherein the chuck body comprises; a port aligned with and configured to flow gas into the gap defined between the first and second electrostatic chuck assemblies. - View Dependent Claims (2, 3, 5, 6, 7, 8, 11, 12, 16, 17, 18, 19, 20)
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4. An electrostatic chuck comprising:
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a chuck body; and a plurality of independently replaceable electrostatic chuck assemblies mounted in an array across the chuck body to define a substrate support surface suitable for supporting a large area substrate, at least a first electrostatic chuck assembly of the plurality of electrostatic chuck assemblies operable independent of an operation of a second electrostatic chuck assembly of the plurality of electrostatic chuck assemblies, wherein the plurality of electrostatic chuck assemblies have gaps defined therebetween configured to flow gas across the substrate support surface.
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9. An electrostatic chuck comprising:
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a chuck body; a plurality of independently replaceable electrostatic chuck assemblies mounted in an array across the chuck body to define a substrate support surface suitable for supporting a large area substrate, at least a first electrostatic chuck assembly of the plurality of electrostatic chuck assemblies operable independent of an operation of a second electrostatic chuck assembly of the plurality of electrostatic chuck assemblies, wherein each electrostatic chuck assembly comprises; a main body having at least a first electrode disposed therein; and at least a first tab extending from the main body and through the chuck body, the first tab comprising a connection terminal coupled to the first electrode, the connection terminal sandwiched between insulating layers; a first electrical lead electrically coupled to the connection terminal disposed in the first tab, the first electrical lead separated from the main body by a carrier body; and a terminal connector comprising a contact terminal encapsulated in an electrically insulating cover, a portion of the contact terminal exposed through an opening in a top surface of the cover, the top surface of the cover further comprising an outer ring disposed radially outward of the opening and an inner ring disposed radially inward of the opening. - View Dependent Claims (10)
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13. A method for chucking a substrate, comprising:
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disposing a large area substrate against a substrate support surface of an electrostatic chuck comprising a plurality of independently replaceable independently energizable bi-polar electrostatic chuck assemblies; energizing at least a first group of the bi-polar electrostatic chuck assemblies to secure the substrate to the substrate support surface; providing a backside gas between the substrate and the substrate support surface; applying pressure below a seal secured in a cantilevered orientation and circumscribing the bi-polar electrostatic chuck assemblies, the pressure flexing the seal into contact with the substrate; not applying power to at least a second group of the bi-polar electrostatic chuck assemblies while the substrate is secured to the substrate support surface by the first group; determining at least one of the bi-polar electrostatic chuck assemblies in the first group have failed; and energizing at least one or more of the bi-polar electrostatic chuck assemblies of the second group with the first group to secure another substrate to the electrostatic chuck. - View Dependent Claims (14, 15)
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Specification