| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed wiring board suppressing resonance between a power source and a ground layer, and having the high degree of freedom in design, and also to provide a manufacturing method thereof. SOLUTION: The printed wiring board 10 has power source layers 13, 15 and ground layers 12, 14, 16. In the printed wiring board 10, a coupling shielding layer 22 including a magnetic metal material is provided between the power source layer and the ground layer. The method of manufacturing the printed wiring board 10 has a process in which a coupling shielding film 20 having the coupling shielding layer 22 formed on the surface of a resin film 21 is arranged between a plurality of metallic foils to be used as the power source layer and the ground layer. COPYRIGHT: (C)2007,JPO&INPIT |
