Probe card and method for constructing same

摘要

In one embodiment, a probe card for testing dice on a wafer includes a substrate, a number of cantilevers formed on a surface thereof, and a number of probes extending from unsupported ends of the cantilevers. The unsupported ends of the cantilevers project over cavities on the surface of the substrate. The probes have tips to contact pads on the dice under test. The probe card may include a compressive layer above the surface of the substrate with a number of holes through which the probes extend.