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Thermal optical chuck

  • US 7,176,705 B2
  • Filed: 05/06/2005
  • Issued: 02/13/2007
  • Est. Priority Date: 06/07/2004
  • Status: Active Grant
First Claim
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1. A thermal optical chuck for supporting a device under test in a probe station, said thermal optical chuck comprising:

  • (a) a transparent plate having an edge, a first surface for supporting said device under test, and an opposing second surface;

    (b) a transparent conductor having a resistance, said transparent conductor being deposited over an area of at least one of said first and said second surfaces of said transparent plate;

    (c) a first bus bar in conductive contact with said transparent conductor, said first bus bar being connectible to a source of electric current; and

    (d) a second bus bar in conductive contact with said transparent conductor, said second bus bar being connectible to said source of electric current and spaced apart from said first bus bar.

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