Patent ID: 7498827

Claim:
A probe card comprising; a circuit board structured to transmit an electric signal to a plurality of probes; a probe supporting plate located on a lower face side of said circuit board with a plurality of probes inserted in a vertical direction; and a connecting plate positioned between said circuit board and said probe supporting plate to electrically connect said circuit board and each probe on said probe supporting plate; wherein on the probe supporting plate, an upper end portion of each of said plurality of probes protrudes upward of said probe supporting; a lower end portion of each of said plurality of probes protrudes downward of said probe supporting plate, wherein each of said plurality of probes comprises at least an upper portion, a main body portion and a lower portion, where the main body portion comprises a connecting portion with the upper portion positioned substantially at a middle of the connecting portion; wherein said main body portion deflects when said upper portion contacts said circuit board; wherein a groove is formed on a lower face side of said probe supporting plate, and a through-hole is formed on a bottom face of said groove; wherein a plurality of concave portions are formed along said groove on a lower face adjacent to said groove on said probe supporting plate; wherein each probe comprises a locking portion to lock said probe to said probe supporting plate; and a concave portion is formed on said locking portion.