Patent ID: 7791361

Claim:
A probe testing apparatus comprising: a prober; a test head; a probe card mount, wherein the probe card mount is attached to the test head, the test head and the probe card mount are in adjustable contact with a prober through a first set of planarizing adjusters; a probe card for testing a semiconductor device, the probe card is in adjustable contact with a probe card mount, the probe card comprising: a printed circuit board affixed to a stiffener, wherein the stiffener provides rigid support to the printed circuit board; a probe head that is in electrical contact with the printed circuit board, the probe head further comprising a plurality of probe contactor tips, the plurality of probe contactor tips defining a first plane; and the stiffener further comprising a second set of planarizing adjusters that come into contact with the probe card mount and wherein the first and second set of adjusters may be actuated to alter the position of first plane.