| 摘要 |
First circuit board 10 including first resin base material 12 which is softened by heating and has a fusing property, and a plurality of first conductor patterns 14 formed on a surface of first resin base material 12, and second circuit board 20 on which a plurality of second conductor patterns 24 are formed with the same pitch as that of first conductor patterns 14 are provided. In the configuration, first conductor patterns 14 and second conductor patterns 24 are brought into mechanical contact with each other to provide electrical conduction; first resin base material 12 covers first conductor patterns 14 and second conductor patterns 24 and is bonded to second resin base material 22 of second circuit board 20, thereby connecting first circuit board 10 and second circuit board 20 to each other.
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