| 摘要 |
PROBLEM TO BE SOLVED: To provide a flexible printed circuit board which comprises a substrate film and a wiring pattern layer built in the surface of the substrate film, and which has a bending portion. SOLUTION: The printed circuit board has a bending portion which can be bent in the transverse direction. The bending portion is fabricated by forming an opening by selectively removing the substrate film from the printed circuit board, and then forming a top resin film and a bottom resin film so as to cover the top and bottom faces of the wiring pattern exposed in the opening by the top and bottom resin films, respectively. COPYRIGHT: (C)2008,JPO&INPIT
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