Patent ID: 7716824

Claim:
A method for manufacturing a probe card for inspecting electric properties of an object to be inspected, said probe card comprised of a circuit board; and a support plate being placed under said circuit board and being formed of a glass substrate and supporting a probe pin, the method comprising: forming a hole in a pin stand substrate by an etching and standing a pin having a quadrangular polo shape in the hole formed in the pin stand substrate; housing a glass substrate in a container having an opened upper surface; placing the pin stand substrate opposite the glass substrate so that the pin of the pin stand substrate faces a side of the glass substrate housed in the container; heating and melting the glass substrate housed in the container; approximating the pin stand substrate to the melted glass substrate and inserting the pin of the pin stand substrate into the glass substrate; cooling and solidifying the glass substrate housed in the container while having the pin inserted therein; taking out the glass substrate from the container; removing the pin inserted in the glass substrate; and forming a guide hole having a quadrangular horizontal sectional shape by polishing a lower surface of the glass substrate after the pin is removed therefrom; wherein the probe pin composed of an elastic portion and a pin portion is inserted in the guide hole; and wherein a tip of the pin portion protrudes downward from said support plate.