Thermal optical chuck
First Claim
Patent Images
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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Abstract
An accessible optical path to a lower surface of a heatable device under test is provided by a thermal optical chuck comprising a transparent resistor deposited on transparent plate arranged to supporting the device in a probe station.
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Citations
17 Claims
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1. A thermal optical chuck for supporting a device under test in a probe station, said thermal optical chuck comprising:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification