Chuck with triaxial construction

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8240650
SERIAL NO

12048323

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Abstract

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A chuck with triaxial construction comprises a receiving surface for a test substrate and arranged below the receiving surface: an electrically conductive first surface element, an electrically conductive second surface element electrically insulated therefrom, and an electrically conductive third surface element electrically insulated therefrom, and, between the first and the second surface element, a first insulation element and, between the second and the third surface element, a second insulation element. A chuck for very low current measurements which can be used to prevent the occurrence of leakage currents and a triboelectric charge and which is configured favourably in terms of production, is achieved because at least one of the electrically conductive surface elements is mechanically connected to at least one insulation element and has an elasticity that compensates for an expansion difference resulting from differences in different coefficients of expansion between a respective surface element and an adjoining insulation element.

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Patent Owner(s)

Patent OwnerAddress
FORMFACTOR INC7005 SOUTHFRONT ROAD LIVERMORE CA 94551

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kanev, Stojan Thiendorf OT Sacka, DE 44 174
Kiesewetter, Jörg Thiendorf OT Sacka, DE 5 15
Schmidt, Axel Thiendorf OT Stölpchen, DE 71 623
Stoll, Karsten Sohland an der Spree, DE 12 73
Teich, Michael Moritzburg OT Friedewald, DE 47 563

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