Patent ID: 8476919

Claim:
A prober unit in which probes are brought into contact with to-be-tested semiconductor chips to establish electrical connection between the semiconductor chips and a test unit via the probes, wherein: a probe assembly and a plurality of wiring boards are prepared, the probe assembly including output terminals to be connected directly to the probes, the probe assembly being constituted by integrated regularly-arranged multiple probe groups including the output terminals, and each of the wiring boards including wiring adhering to a surface of a non-conductive film; an n-th row of an output terminal group of the probe assembly is brought into contact with a land group provided at an end of an arbitrary n-th wiring board, and a wiring terminal provided at the other end of the n-th wiring board is connected to one of a common wiring board and a connector to establish electrical connection between the to-be-tested semiconductor chips and the test unit; and wherein a converting circuit board is provided between wiring terminals of the wiring boards and the common wiring board.