Patent ID: 6040700
Filing Date: 2000-03-21
Classification: G01R

Abstract:
A semiconductor tester for testing a semiconductor device in wafer form, comprising:a wafer prober including a wafer prober frame, a chuck for holding a wafer under test and a displacement mechanism for displacing the chuck upward relative to the wafer prober frame toward a test station,a mechanical interface member,an interface member support structure mounted on the wafer prober frame for supporting the mechanical interface member, the interface member support structure being adjustable, whereby the orientation of the interface member relative to the prober frame can be adjusted,a test head having test head terminals distributed over a test face,a test head mounting structure to which the test head is rigidly attached, the test head mounting structure being fixed to and supported by the wafer prober frame, independently of the mechanical interface member, with the test face oriented toward the chuck and the entire weight of the test head being carried by the prober frame,a probe card, anda probe card latching mechanism for releasably attaching the probe card to the mechanical interface member at a location in which the probe card engages the test head terminals and the wafer under test engages the probe card when at the test station.