Patent ID: 9354252
Filing Date: 2016-05-31
CPC Classification: G01R

Claim Text:
1. A method of implementing a wafer probing system, the method comprising: positioning a semiconductor wafer mounted on a motor driven wafer chuck to a preset position to initiate contact between the wafer and a probe card assembly having a plurality of individual probe structures, with each probe structure configured with a pressure sensing unit integrated therewith, the probe card assembly including a plurality of zones spaced apart from one another, each zone including at least one respective probe structure configured to be individually actuated with respect to other probe structures included in other zones included in the plurality of zones so as to control movement of at least one zone with respect to at least one other zone among the plurality of zones; and upon detection of contact between at least one probe structure and a surface of the wafer via a pressure sensing unit of the at least one probe structure, engaging a plurality of piezoelectric driver units, driving at least one probe structure of a first zone of the probe card assembly independently with respect to at least one probe structure of a second zone of the probe card assembly in response to feedback from the pressure sensing unit, and driving the at least one probe structure of a respective zone based on contact between a surface of wafer and the at least one probe structure of a respective zone so as to perform fine adjustment of the at least one probe structure and ensure contact between the at least one probe structure and a surface of the wafer.