Patent ID: 6586956
Filing Date: 2003-07-01
Classification: G01R

Abstract:
A planarity adjustment mechanism for a probe contact system for establishing electrical connection with contact targets, comprising:a contact substrate having a plurality of contactors mounted thereon where tips of the contactors contact the contact targets when the contact targets are pressed against the probe contact system; a probe card for mounting the contact substrate for establishing electrical communication between the contactors and a test head of a semiconductor test system; a conductive elastomer provided between the contact substrate and the probe card, the conductive elastomer comprising an elastic sheet and a plurality of conductive filaments embedded in the elastic sheet in a direction substantially perpendicular to the elastic sheet; mounting means for fixedly mounting the contact substrate on the probe card; a gap sensor for measuring a distance between the contact substrate and the contact targets in a non-contact manner, the gap sensor being directly formed on the contact substrate; a probe card ring attached to a frame of the probe contact system for mechanically coupling the probe card to the frame; and a plurality of connection members for connecting the probe card to the probe card ring at three or more locations on the probe contact system, the connection member being adjustable for changing a gap between the probe card and the probe card ring.