Patent ID: 7361848

Claim:
A wiring board, comprising: a first insulating layer made of a flexible material; a second insulating layer stacked on a partial region of the first insulating layer; a first wiring layer disposed between the first insulating layer and the second insulating layer; a second wiring layer disposed on the second insulating layer, and a stainless steel layer stacked on an opposite side, of the first insulating layer, to a side on which the second insulating layer is stacked, wherein the first insulating layer is composed of two or more insulating layers and has a third wiring layer in each interlayer of the two or more insulating layers, and wherein an electric interlayer connection between the first wiring layer and the third wiring layer has a plating layer of a hollow cylindrical shape or a hollow truncated cone shape, and inside of the hollow is filled by a material of the second insulating layer being transformed and entering therein.