HIGH DENSITY INTEGRATED CIRCUIT APPARATUS, TEST PROBE AND METHODS OF USE THEREOF
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Accused Products
Abstract
The present invention is directed to a high density test probe which provides a means for testing a high density and high performance integrated circuits in wafer form or as discrete chips. The test probe is formed from a dense array of elongated electrical conductors which are embedded in an compliant or high modulus elastomeric material. A standard packaging substrate, such as a ceramic integrated circuit chip packaging substrate is used to provide a space transformer Wires are bonded to an array of contact pads on the surface of the space transformer. The space transformer formed from a multilayer integrated circuit chip packaging substrate. The wires are as dense as the contact location array. A mold is disposed surrounding the array of outwardly projecting wires. A liquid elastomer is disposed in the mold to fill the spaces between the wires. The elastomer is cured and the mold is removed, leaving an array of wires disposed in the elastomer and in electrical contact with the space transformer The space transformer can have an array of pins which are on the opposite surface of the space transformer opposite to that on which the elongated conductors are bonded. The pins are inserted into a socket on a second space transformer, such as a printed circuit board to form a probe assembly. Alternatively, an interposer electrical connector can be disposed between the first and second space transformer.
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Citations
597 Claims
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1-577. -577. (canceled)
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578. A structure comprising:
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a first substrate comprising first electrical contact locations and a plurality of first elongated flexible electrical conductors extending from the first electrical contact locations;
a second substrate comprising second electrical contact locations on one side thereof and third contact locations on an opposite side thereof;
the second contact location facing the first contact locations, and each first elongated flexible electrical conductor comprises an end electrically connected to a first contact location, the second substrate being disassembleable from the first substrate, and second elongated flexible conductors having a first end electrically connected to a second contact location and extending away therefrom;
selected ones of the first elongated electrical conductors are electrically interconnected with selected ones of the second contact locations;
the first contact locations are spaced apart from one another by a first distance, the second contact locations are spaced apart from one another by a second distance. - View Dependent Claims (579, 580, 581, 582, 583, 584, 585, 586, 587, 588, 589, 590, 591, 592, 593, 594, 595, 596, 597)
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Specification