| 摘要 |
PROBLEM TO BE SOLVED: To prevent disconnection in a site that is bent for usage, and to improve reliability. SOLUTION: In an FPC 10, a conductive layer 2 having a specific pattern is formed on the upper surface of a base material 1 and further the conductive layer 2 is covered with a coverlay 3. Also, the FPC 10 is folded back by a bending line L by approximately 180 deg.. Width W1 of a circuit pattern at a part where the bending line L crosses is wider than width W2 of the circuit pattern at other parts.
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