| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a printed wiring board for shortening working time and superior productivity. SOLUTION: A resin-fitted metal foil is stacked on an innerlayer circuit board comprising an innerlayer circuit, which is heated and pressurized for a laminate, and a hole reaching the innerlayer is opened so that the innerlayer and the metal foil is electrically connected, and then the metal foil is worked to form an outer-layer circuit. Here, at opening the hole reaching the innerlayer, a metal foil of 1-5μm in thickness is used and the metal foil side of laminated board comprising a resin and the metal foil is irradiated with laser. |
