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Electrostatic chuck

  • US 5,867,359 A
  • Filed: 03/15/1996
  • Issued: 02/02/1999
  • Est. Priority Date: 03/03/1994
  • Status: Expired due to Fees
First Claim
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1. An electrostatic chuck with a holder for attachment to a wafer transfer mechanism, comprising:

  • an electrostatic paddle, including a bottom sapphire plate adjacent the holder, a sapphire frame adjacent the bottom sapphire plate, wherein the sapphire frame defines a plurality of slots, and a top sapphire plate adjacent the frame; and

    a plurality of conductors, wherein each of the plurality of conductors rests in one of the slots, and wherein a brazing joins the top and bottom sapphire plates to the adjacent surfaces of the plurality of conductors, wherein the brazing pulls the top and bottom sapphire plates tightly against the sapphire frame for electrical isolation.

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