Patent ID: 7403024

Claim:
A contactor configured to be arranged between a semiconductor device and a test board so as to contact the semiconductor device to the test board, the contactor comprising: a plate-like substrate formed of an insulating material, the substrate having a first surface facing said semiconductor device and a second surface facing said test board; and a plurality of contact electrodes embedded and fixed in the substrate, wherein each of said contact electrodes has a first end portion, a second end portion and a conductive portion between the first end portion and second end portion, the first end portion protruding from a first surface of said substrate, the second end portion protruding from a second surface of said substrate, and said substrate and said conductive portion are deformable in a direction of a thickness of said substrate; wherein said substrate is an elastic material formed of plastic or rubber, and wherein said substrate contains a covering layer member having a thermal expansion coefficient the same as that of the test board.