ROUTING STRUCTURE AND ROUTING METHOD

To provide a routing structure and a routing method capable of relaxing the restriction on the number of printed wirings that can be routed on a routing surface having a constriction.SOLUTION: A routing structure 1 includes a plurality of printed wirings 51, 61, and 71, a routing surface 3 on which the plurality of printed wirings 51, 61, and 71 are formed, insulating layers 52, 62, and 72 covering the printed wirings 51, 61, and 71, and a part of the routing surface 3 is a narrowed portion 31 having a narrow width in a direction perpendicular to the direction in which the printed wirings 51, 61, and 71 extend, and in the narrowed portion 31, the plurality of printed wirings 51, 61, and 71 are stacked via the insulating layers 52 and 62.SELECTED DRAWING: Figure 2 【課題】狭窄部を有する配索面に配索可能な印刷配線数の制限を緩和することができる配索構造および配索方法を提供する。【解決手段】配索構造１は、複数の印刷配線５１，６１，７１と、複数の印刷配線５１，６１，７１が形成された配索面３と、印刷配線５１，６１，７１を覆う絶縁層５２，６２，７２と、を備え、配索面３の一部は、印刷配線５１，６１，７１が延在する方向と直交する方向の幅が狭い狭窄部３１であり、狭窄部３１において、複数の印刷配線５１，６１，７１が絶縁層５２，６２を介して積層されている。【選択図】図２