| 摘要 |
PROBLEM TO BE SOLVED: To prevent imperfect contact. SOLUTION: A contact tape 10 has a plurality of projecting parts 10a, each having an approximately semicircular cross section and provided intermittently along one direction, between which are grooved parts 10b lower than the apexes of the projecting parts. More specifically, the projecting parts 10a of the contact tape 10 comprise a first layer 10c, a second layer 10d, and a third layer 10e. The first layer 10c is an outer layer constituting the apex, made of a gold alloy, gold, and a gold-silver alloy. The second layer 10d is a middle layer made of silver and a silver alloy. The third layer 10e is an inner layer constituting the grooved parts 10b as well, made of copper and a copper alloy. The contact tape 10 has a rib 10f, having the same composition as that of the third layer and provided on the side opposite to the projecting parts 10a along the one direction.
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