Patent ID: 8890558
Filing Date: 2014-11-18
Classification: G01R

Abstract:
1. A test head comprising: a test head main body having a frame; and an interface apparatus electrically connecting a probe card and the test head main body with each other and a stiffener that reinforces the probe card, wherein the test head further comprises: a transmitter positioned between the probe card and the frame and configured to transmit a pressing force applied to the probe card to the frame; a holding mechanism provided at a top plate of the interface apparatus and configured to hold the probe card; and a limiter provided at the top plate and configured to limit a movement of the holding mechanism in a direction departing from the probe card reinforced by the stiffener, wherein the transmitter has: a contact member being movable relative to either one of the limiter or the frame and contacting other of the limiter or the frame; and a lock mechanism provided at either one of the limiter or the frame and configured to lock a relative movement of the contact member.