Patent ID: 7285967
Filing Date: 2007-10-23
Classification: G01R

Abstract:
1. A probe card comprising: a plurality of probes of a cantilever type consisting of a probe tip and a probe beam; a single crystalline silicon substrate having a plurality of through-hole contact members disposed therein, each of the plurality of the through-hole contact members having a conductive material therein for electrically connecting each of the plurality of the probes to a test circuit, a plurality of trenches disposed in the substrate, the plurality of trenches having the plurality of the probes attached thereto so as to guide a movement of the plurality of the probes in a vertical direction, and an insulating film for insulating a portion of the conductive material other than a portion where the plurality of the probes is in a direct contact with the conductive material; and a printed circuit board including the test circuit, wherein a test is performed by applying an electrical signal from the printed circuit board to the probe to transmit an electrical signal detected from the probe to the printed circuit board through a connection between a contacting portion of the printed circuit board and the conductive material in the through-hole contact member.