| 摘要 |
PROBLEM TO BE SOLVED: To obtain a flexible printed-wiring board that can form fine wiring, has a wiring pattern near the center in a thickness direction, and can obtain a contact for connection from both the front and rear. SOLUTION: The wiring pattern 3 is formed by electrolytic plate with a metal plate 1 as a lead for electrolytic plating, an insulating resin 4 is formed on it, an opening 5 is formed at an insulating covering so that the wiring pattern is exposed partially. The metal plate is removed by etching, the insulating covering 4 is formed also on a surface where the metal plate is removed, and an opening is formed also on the insulating covering.
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