Patent ID: 7382143
Filing Date: 2008-06-03
Classification: G01R

Abstract:
1. An apparatus for use in testing a plurality of integrated circuit dies in an array, the apparatus comprising: a plurality of dielectric substrates having a plurality of probe tips protruding from a first surface, wherein the plurality of probe tips is electrically coupled to a second opposing surface through conductive via plugs; a plurality of pliant posts coupled to each of the plurality of dielectric substrates, the posts being sufficiently laterally pliant to allow for thermal expansion of the dielectric substrate without warpage of the dielectric substrate; a support block coupled to the plurality of pliant posts; a plurality of printed wiring layers disposed in overlaid sheets and interposed between the plurality of dielectric substrates and the support block and extending from between rows of said pliant posts, wherein embedded conductive traces in the printed wiring layers are individually terminated at one end to a via plug and wherein the flexible sheets are a plurality of flex cables.