Patent ID: 7579857

Claim:
An electrical contact device of a probe card, comprising: a base having a top side, said base being provided with a cavity that extends from said top side, said cavity having sidewalls transverse to said top side, and said base having a plurality of anchoring portions each extending from said top side and a respective sidewall; and a plurality of probes each having a first end and a second end, wherein the first end is secured in a respective anchoring portion, and the second end extends across the cavity, wherein each said probe has a main portion that extends between said first and second ends in direction substantially parallel to said top side to constitute a cantilever beam, and each said probe has, at said second end, a contacting portion that extends substantially perpendicular to said main portion; and said cavity extends a sufficient distance from said top side to permit free deflection of said cantilever beam when said contact device is in use.