| 摘要 |
Provided is a substrate, wherein wire-breaking of a plurality of signal lines can be detected, circuit configuration can be simplified, and processing load accompanying wire-breaking detection processing can be minimized. This substrate is a multi-layer structured FPC substrate (203), having a plurality of layers (L1-L4) insulated from each other. In this FPC substrate (203), a signal line (302) is provided on each of the plurality of layers (L1-L4). A dummy line (303) is provided, by being bent from one layer among the plurality of layers (L1-L4) towards a layer other than the one of the layers, on both the one of the layers and the layer other than the one of the layers. |
