| 摘要 |
PROBLEM TO BE SOLVED: To provide a one-sided or double-sided flexible printed wiring board, which is modified in dimensional stability without marring the physical properties of the board, excellent in a migration resistance and suitable to a fine patterning. SOLUTION: A flexible printed wiring board is constituted using an electrically insulative film of a thickness of 10 to 30μm, a bonding agent of a thickness of 5 to 15μm, a copper foil of a thickness of 5 to 15μm and a board of a total thickness of 20 to 60μm.
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