METHOD FOR FORMING CONDUCTIVE BUMPS FOR THE PURPOSE OF CONTRRUCTING A FINE PITCH TEST DEVICE
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United States of America Patent
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app pub date -
Nov 17, 1998
filing date -
Dec 23, 1993
priority date (Note) -
Abandoned
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Abstract
A system is described for using with fine pitch devices including singulated bare die, semiconductor wafers, chip sized packages, printed circuit boards, and the like to determine that the fine pitch device is not faulty. The system is also usable for transfer of data, energy, for collecting data measurements or measurement-related data between two pieces, and for effecting at least part of an identification process. The disclosed embodiment includes a substrate having a circuit pad pattern in the mirror image of the pattern of contact points, usually bond pads of the fine pitch device to be connected. A conductive elastomeric probe is permanently formed on the circuit pads of the substrate such that the probe is malleable and allows repetitive electrical contact. The system may also contain an alignment template for orienting the fine pitch device onto the elastomeric probes of the contact point pattern of the substrate.
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