| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flexible printed wiring board which produces low electromagnetic noise. SOLUTION: A twisted pair structure is constituted as a whole, by patterning a conductor layer formed on the front surface side of a both-sided flexible printed wiring board in plural parallel front wirings 12b descending toward the right side and a conductor layer formed on the rear surface side of the wiring board in plural parallel rear wirings 13b ascending toward the right side (as viewed from the front surface side) and crossing the wiring 12b and connecting the end section of the surface wiring 12b to that of the rear wiring 13b through via holes 18. At both ends of the front wiring 12b, four pads 12c are formed. In addition, a twisted pair structure constituted by twisting two one-sided flexible printed wiring board together is also effective.</p> |
