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1 results about "Probe card" patented technology
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A probe card is an interface between an electronic test system and a semiconductor wafer. Typically the probe card is mechanically docked to a prober and electrically connected to a tester. Its purpose is to provide an electrical path between the test system and the circuits on the wafer, thereby permitting the testing and validation of the circuits at the wafer level, usually before they are diced and packaged. It consists, normally, of a printed circuit board (PCB) and some form of contact elements, usually metallic, but possibly of other materials as well.
An object of the invention is to provide a probe card capable of properly performing a measurement. A probe card according to the invention includes: probes 100 shaped to allow vertical elastic deformation; a supporting substrate 200 with the probes provided on the lower surface thereof; a main substrate 300 positioned opposing the upper surface of the supporting substrate 200; an intermediate substrate 400 disposed between the supporting substrate 200 and main substrate 300; a supporting member 500 that is a column-shaped member with one end thereof attached to the center of the supporting substrate 200 and the other end thereof attached to the intermediate substrate 400 and holds the supporting substrate 200 so that the supporting substrate 200 is inclinable; and elastic members for holding the supporting substrate 200 so that the supporting substrate 200 is in a horizontal position relative to the main substrate 300, which are provided between the supporting substrate 200 and main substrate 300.