Patent ID: 7710106
Filing Date: 2010-05-04
Classification: G01R

Abstract:
1. A planar electrical contact layer, facilitating temporary contact between a sample under test and a probe card substrate having a pre-arranged electrical contact pattern corresponding to a pattern on the sample, comprising: a plurality of multi-walled nanotubes, directly metallized at their bases, to allow contact to the pre-arranged electrical contact pattern on the probe card substrate, wherein the plurality of nanotubes is arranged into a plurality of bundles, each bundle of the plurality of bundles forming an electrical contact corresponding to areas on the sample and on the probe card substrate between which a temporary contact is required, wherein tips of the nanotubes of the bundles which will form the temporary contact to the sample are metallized with a conductive material to form a conformal coating on each or most of the nanotubes of the bundles.