| 摘要 |
[Problem] To obtain a wiring board capable of suppressing a difference in the amount of delay between two signal wires constituting a differential signal wire pair, while ensuring design freedom. [Solution] A wiring board comprises a first insulating layer 1, a first signal wire 2, and a second signal wire 3. The first insulating layer 1 is provided with fibers 4 having a long axis in a first direction and arranged substantially parallel to one another with a first spacing, and an insulating material 5 filling gaps between the fibers 4, which extend in the first direction. The first signal wire 2 is formed on the first insulating layer 1, substantially parallel to the first direction. The second signal wire 3 is formed parallel to the first signal wire 2 in such a way that the spacing from the first signal wire 2 is substantially an integer multiple of the first spacing, and the second signal wire transmits a differential signal of a signal transmitted over the first signal wire 2. |
