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Electrostatic chuck with heater and manufacturing method thereof

  • US 7,701,693 B2
  • Filed: 09/12/2007
  • Issued: 04/20/2010
  • Est. Priority Date: 09/13/2006
  • Status: Active Grant
First Claim
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1. An electrostatic chuck, comprising:

  • a plate-like base that is made of ceramics and has a substrate mounting surface on which a substrate is to be mounted; and

    a dielectric electrode embedded in the base,wherein the base includes a support portion made of alumina ceramics, and a surface and side portions that are made of yttria ceramics and form at least the substrate mounting surface of the base on a surface of the base and side surfaces of the base,wherein a carbon content in alumina ceramics in a vicinity of the dielectric electrode is 0.03 wt % or less, andwherein a thickness of a portion of the base, which forms the substrate mounting surface, is 0.2 mm to 0.5 mm, and a thickness of a portion of the base, which forms the side surface of the base, is 0.2 mm to 10 mm.

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