| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-layered flexible printed-wiring board having a high durability for a prolonged term at a high temperature and in high-temperature high-humidity, and having a metallic conductor layer having a high adhesive strength even when a heat and a stress are applied. SOLUTION: In the flexible printed-wiring board in which a metallic evaporated layer is formed on one surface or both surfaces of a plastic film and the conductive metallic layer is laminated on the metallic evaporated layer, the metallic evaporated layer is composed of a layer mainly comprising Ni and Cr and a layer mainly comprising a low-resistant metal, and X and Y are kept within a range that both formula (1): 40≤X≤250 and formula (2): 5.5≤XY/100≤16 are satisfied when the film thickness of the layer mainly comprising Ni and Cr is represented by X (Å) and the content of Cr by Y (%). COPYRIGHT: (C)2005,JPO&NCIPI
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