Advantest America, Inc.

Chang Huang

Yohannes Desta

Melvin Khoo

Lakshmikanth Namburi

Matthew Losey

Matt Losey

A plurality of inserts are anchored in holes or recesses in a probe head. Shafts are coupled to the inserts, and adjustable multi-part fasteners are attached to the shafts and to a stiffener. The multi-part fasteners are operated to move the shafts and couple the probe head, the stiffener, and other components of a microelectronic contactor assembly. In some embodiments, the inserts may be anchored in the probe head using an adhesive. In some embodiments, the probe head may comprise more than one major substrate, and the inserts may be anchored in either of the substrates.

Microelectronic contactor assembly, structures thereof, and methods of constructing same

A microelectronic contactor assembly can include a probe head having microelectronic contactors for contacting terminals of semiconductor devices to test the semiconductor devices. A stiffener assembly can provide mechanical support to microelectronic contactors and for connecting a probe card assembly to a prober machine. A stiffener assembly may include first and second stiffener bodies that are connected together at their central portions with adjustment mechanisms such as three differential screw mechanisms. A probe head may be attached to a first stiffener body at locations outside its central portion, while a prober machine may be attached to a second stiffener body at locations outside its central portion. The first and second stiffener bodies may have different coefficients of thermal expansion. The stiffener assembly allows for differential thermal expansion of various components of the microelectronic contactor assembly while minimizing accompanying dimensional distortion that could interfere with contacting the terminals of semiconductor devices. The adjustment mechanisms allow for quick, sensitive adjustment of the positions of microelectronic contactors relative to semiconductor devices to be tested.

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Arcadia, CA, United States of America

Chang Huang