| 摘要 |
<p>The present invention has for its object to provide a flexible circuit board and a method for production thereof in which in cases where elastic wiring in movable parts of a robot, etc., is required, the wiring can be made to expand and contract with a simple arrangement, and at the same time, the circuit board is excellent in weight reduction as well as size reduction, and breaking or disconnection and exfoliation of a wiring layer do not take place easily, even in cases where the circuit board is deformed in a repeated manner. The present invention resides in a flexible circuit board (1) which has an insulating film (2) made of a thermoplastic resin, a wiring layer (3A) formed on said insulating film, and an insulating layer (4) made of a thermoplastic resin and formed on said wiring layer (3A), and which is characterized in that a spiral part (5) shaped into a spiral shape is provided in at least a part of said flexible circuit board, and said flexible circuit board is constructed to be expandable and contractable, and/ or torsionally deformable in said spiral part (5).</p> |
