Ceramic substrate support
First Claim
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22. A support assembly for supporting a workpiece comprising:
- a ceramic body having a first side and a second side adapted to support the workpiece;
a passage formed through the ceramic body having both a first end and a second end in fluid communication with the second side of the ceramic body;
a heating element disposed in the ceramic body;
a plate coupled to the ceramic body; and
a channel defined between the first side of the ceramic body and a first side of the plate, the channel in fluid communication with the second end of the passage.
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Abstract
A substrate support assembly for supporting a substrate during processing is provided. In one embodiment, a support assembly includes a ceramic body having an embedded heating element and a base plate. The base plate and the ceramic body define a channel therebetween adapted to supply purge gas to a perimeter of a substrate disposed on the support assembly. The base plate is fastened to the body by brazing, adhering, fastening, press fitting or by mating engaging portions of a retention device such as a bayonet fitting.
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Citations
35 Claims
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22. A support assembly for supporting a workpiece comprising:
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a ceramic body having a first side and a second side adapted to support the workpiece;
a passage formed through the ceramic body having both a first end and a second end in fluid communication with the second side of the ceramic body;
a heating element disposed in the ceramic body;
a plate coupled to the ceramic body; and
a channel defined between the first side of the ceramic body and a first side of the plate, the channel in fluid communication with the second end of the passage. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24)
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23-1. The support assembly of claim 22 further comprising a ring supported by the body and defining a plenum therewith, the plenum fluidly communicating with the apertures.
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25. A support assembly for supporting a workpiece comprising:
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a ceramic body having a first side and a second side adapted to support the workpiece;
a stem coupled to the first side of the plate;
a plate circumscribing the stem and disposed adjacent to the first side of the ceramic body; and
a channel defined between the first side of the ceramic body and a first side of the plate. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification