| 摘要 |
A multilayer flexible printed circuit board includes a core material made of an insulating material having bendability. A solid layer is provided on one surface of the core material. The solid layer is made of an electrically conductive material to form a ground plane. A wiring layer is provided on the other surface of the core material. The wiring layer is made of an electrically conductive material having a controlled impedance. The core material, the solid layer and the wiring layer together form one set of lamination. A plurality of sets of the lamination are laminated via an insulation layer.
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