| 摘要 |
PURPOSE:To provide the electric wiring/optical wiring combined flexible printed circuit board formed by housing electric wiring and optical wiring in the same wiring board and the substrate for such circuit board. CONSTITUTION:This electric wiring/optical wiring combined flexible printed circuit board is formed by using a high-polymer film having optical waveguide and metallic wiring formed on it as main constituting elements. The electric wiring/optical wiring combined flexible printed circuit board is formed by using the high-polymer film having the optical waveguide and metallic foil formed on it as main constituting elements. The main base materials of the respective high-polymer films are polyimide and more particularly adequately polyimide of org. tetracarboxylic acid and 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl. Since the circuit boards have characteristics, such as resilience and lightness, the circuit board makes contribution for high advancement of future optical communication apparatus, optical information device, etc. The circuit boards are easily made from the substrates. |
