| 摘要 |
This suggests a printed wiring board, where insulation layers and conductive circuits are laminated alternately, the cross-section of each conductive circuit is rectangular, and when the upper conductive circuit space between adjacent conductive circuits of the PWB is referred to as (W1) and the lower conductive circuit space as (W2), the difference between those spaces with reference to the conductive circuit thickness (T) satisfies the formula 0.10T‰¦|W1 - W2|‰¦0.73T. The above-described structure can suppress crosstalk and delayed signal transmission and prevent malfunctions of ICs even when high-speed driven ICs are mounted. |
