Patent ID: 8779296

Claim:
A wiring board comprising: an insulating substrate; a metal wire provided on the insulating substrate; an inorganic insulating film covering the metal wire; an organic insulating film covering the inorganic insulating film; and a conductive film formed on the organic insulating film, wherein the metal wire is provided with a first region where the conductive film is laminated directly on the metal wire without the inorganic insulating film and the organic insulating film being sandwiched therebetween, the conductive film extends over the first region in such a way as to cover an end face of the organic insulating film that faces the first region and an end face of the inorganic insulating film that faces the first region, the end face of the organic insulating film is further away from the first region than the end face of the inorganic insulating film, the wiring board includes a drive element including a first semiconductor layer, the wiring board includes a second semiconductor layer provided in a same layer as the first semiconductor layer and between the end face of the organic insulating film that faces the first region and the inorganic insulating film, the first region is a terminal area arranged to connect to an external device, no other metal wire is present between the metal wire and an end part of the organic insulating film that faces the first region, and the second semiconductor layer extends to a second region where an adhesive layer to be stuck to the external device is located, the adhesive layer being provided on the conductive film in the first region.