Abstract: In a bioelectrode capable of detecting biometric information of a living body in touch with the bioelectrode, the bioelectrode includes a base, a first conductive layer that is laminated on a surface side of the base, that is formed by dispersing scale-shaped conductive particles in an insulating binder, and that has extensibility, and a second conductive layer that is laminated on a surface side of the first conductive layer, that has conductivity, and that is harder than the first conductive layer. The second conductive layer is disposed to be exposed at the surface side of the base where the second conductive layer is touchable with the living body. An amount of conductive particles filled in the second conductive layer is smaller than an amount of the conductive particles filled in the first conductive layer. The second conductive layer has a larger outer contour than the first conductive layer.

Abstract: A stretchable wire member includes a base body in which a fixed wire is formed on a hard base material, and a stretching body in which a flexible wire is formed at a flexible base material. In the stretchable wire member in which the base body and the stretching body are fixed and connected to each other, the hard base material includes a projecting part that reduces concentration of stress that is generated at a boundary between the base body and the stretching body, and an upper surface and a lower surface of the projecting part and an upper surface and a lower surface of a recessed part surrounded by the projecting part are covered by a base-body-side flexible base material extending from the stretching body.

Abstract: A stretchable wire member includes a base body in which a fixed wire is formed on a hard base material, and a stretching body in which a flexible wire is formed at a flexible base material. In the stretchable wire member in which the base body and the stretching body are fixed and connected to each other, the hard base material includes a projecting part that reduces concentration of stress that is generated at a boundary between the base body and the stretching body, and an upper surface and a lower surface of the projecting part and an upper surface and a lower surface of a recessed part surrounded by the projecting part are covered by a base-body-side flexible base material extending from the stretching body.