Patent ID: 7701234

Claim:
A probe card for inspecting electric properties of an object to be inspected, said card comprising: a circuit board; and an inspection contact structure provided between said circuit board and the object to be inspected, for passing current between the object to be inspected and said circuit board, said inspection contact structure comprising: a substrate in a flat plate shape; and sheets respectively attached to both surfaces of the substrate, each of said sheets including a plurality of elastic conductive portions and insulating portions each interconnecting said conductive portions, said conductive portions being formed to pass through said sheet and protrude from both surfaces of said sheet, the substrate being formed with a plurality of current-carrying paths linearly passing through the substrate in a thickness direction in a manner to correspond to said conductive portions, said conductive portions of said sheets on both surfaces of the substrate being in contact with end portions of the respective corresponding current-carrying paths in a manner to have the current-carrying paths sandwiched therebetween, tapered contactors that come into contact with the object to be inspected being attached to tip portions of said conductive portions of said sheet located on the side of the object to be inspected, and said inspection contact structure being attached to said circuit board.