Patent ID: 7563986

Claim:
A multiple flexible wiring board in which a plurality of flexible wiring boards are configured, the multiple flexible wiring board comprising: a first wiring base material having an insulation layer and a conductor pattern, a first covering film layer that covers one face of the first wiring base material, a second wiring base material having an insulation layer and a conductor pattern, a second covering film layer that covers one face of the second wiring base material, and an adhesive sheet that bonds the first wiring base material and the second wiring base material in a layered state such that the first covering film layer and the second covering film layer are opposed, and has opening portions that have been formed corresponding to each of the plurality of flexible wiring boards, wherein a hollow portion for each of the plurality of flexible wiring boards is formed between the first wiring base material and the second wiring base material by the opening portions, and auxiliary opening portions are formed between the flexible wiring boards alongside the opening portions, wherein said auxiliary opening portions have borders that are within the innermost surfaces of the insulation layers of the respective first and second wiring base materials.