Contactor having contact electrodes of metal springs embedded in a plate-like structure
View Patent ↗A contactor has contact electrodes elastically deformable in a direction of thickness of the contactor so that the contactor can make a contact with a semiconductor device with an appropriate contact pressure. The contactor is positioned between the semiconductor device and a test board so as to electrically connect the semiconductor device to the test board. Each of a plurality of contact electrodes has a first contact electrode part, a second contact electrode part and a connecting part electrically connecting the first contact electrode part to the second contact electrode part. The first contact electrode part contacts an electrode of the semiconductor device. The second contact electrode part contacts a terminal of the test board. A combining member has an insulating characteristic and holds the connecting part of each of the contact electrodes in a predetermined arrangement.
1. 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.
2. A contactor configured to be arranged between a semiconductor device and a test board to 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; and
wherein a first coating layer is formed on said first surface of said substrate, the first coating layer having a thermal expansion coefficient substantially equal to that of a substrate of said semiconductor device, and the first end portion of said contact electrode protrudes from said first coating layer.
3. 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 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; and wherein a second coating layer is formed on said second surface of said substrate, the second coating layer having a thermal expansion coefficient substantially equal to that of said test board, and the second end portion of said contact electrode protrudes from said second coating layer.