Patent ID: 7772863
Filing Date: 2010-08-10
Classification: G01R

Abstract:
1. A process of testing semiconductor dies, the process comprising: coupling a probe card assembly to a test system, the probe card assembly comprising a frame coupled to a stiffener structure, a wiring substrate disposed between the stiffener structure and the frame, and a plurality of probe substrates coupled to a major surface of the frame; electrically connecting an electrical interface on the wiring substrate to a test controller configured to control testing of the dies, the electrical interface electrically connected through the probe card assembly to probes coupled to the probe substrates; effecting contact between tips of ones of the probes and terminals of the dies; while maintaining the contact, providing test signals between the test controller and the dies through the probe card assembly; and while providing the test signals, impeding relative movement between the frame and each of the probe substrates in a first direction perpendicular to the major surface of the frame and simultaneously allowing relative movement between the frame and each of the probe substrates in a second direction generally parallel to the major surface of the frame.