| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a printed circuit board and a method of verifying the same by which an error in a thickness direction of the board can be easily verified. <P>SOLUTION: A multilayered printed circuit board comprises two-layered signal line layers 4, 5 interposed by a power-supply layer 1. In the printed circuit board, two pairs of pattern conductors 10a, 10b, 11a, 11b are diagonally arranged over the signal line layers 4, 5. By applying a differential voltage to one of the diagonally arranged pairs of pattern conductors and measuring a differential voltage that appears in the other pair of pattern conductors, it is possible to determine whether an error exists in a thickness direction of the board. <P>COPYRIGHT: (C)2013,JPO&INPIT |
