Patent ID: 6417683
Filing Date: 2002-07-09
Classification: G01R

Abstract:
Apparatus for electrical testing of a substrate having a plurality of contact regions, comprising:a frame; a probe card, including a probe card backing member and a plurality of contact regions on the probe card backing member, secured to the frame; a translation device secured to the frame; an alignment device carried by the translation device so that the translation device is mounted between the frame and the alignment device; and a holder, capable of holding the substrate, secured to the alignment device, wherein: (i) the alignment device is operable to cause alignment movement of the holder past the probe card so that selected ones of the contact regions are brought into alignment with selected ones of the probes; and (ii) the translation device is operable to cause translation movement, transverse to the alignment movement, of the alignment device with the holder towards the probe card so that a respective one of the contact regions is brought into contact with a respective one of the probes.