Abstract: [Object] To provide a method for producing an electrical wiring member having a layered structure of copper wiring and a blackening layer and to provide the electrical wiring member through a search for a material for the blackening layer, the material being etched at a rate close to that for the copper wiring under conditions where etching controllability is ensured. [Solution] A method for producing an electrical wiring member according to the present invention includes a step of forming, on at least one main surface of a substrate, a layered film 6 of a Cu layer 3 and CuNO-based blackening layers (2a and 2b); a step of forming a resist layer 4a in a predetermined region on the layered film 6; and a step of removing a partial region of the layered film 6 by bringing the layered film 6 into contact with an etchant.

Abstract: [Object] To provide a method for producing an electrical wiring member having a layered structure of copper wiring and a blackening layer and to provide the electrical wiring member through a search for a material for the blackening layer, the material being etched at a rate close to that for the copper wiring under conditions where etching controllability is ensured. [Solution] A method for producing an electrical wiring member according to the present invention includes a step of forming, on at least one main surface of a substrate, a layered film 6 of a Cu layer 3 and CuNO-based blackening layers (2a and 2b); a step of forming a resist layer 4a in a predetermined region on the layered film 6; and a step of removing a partial region of the layered film 6 by bringing the layered film 6 into contact with an etchant.

Abstract: In a flexible printed circuit (FPC) connection structure for a touch sensor, corrosion of an electrode terminal is prevented without reducing connection reliability. In a touch sensor, a tip of a first passivation layer and a tip of an FPC wiring are spaced apart from one another, and consequently an exposed portion, which is adjacent to a tipmost part and is not covered by the first passivation layer, is formed on a connection terminal. An FPC film includes a tip, which further extends from the FPC wiring and extends to a location at which it overlaps, in a plan view, the first passivation layer, and thereby a space is formed between the tip and the exposed portion. The touch sensor further includes an anti-rust material, which fills the space and thereby covers the exposed portion of the connection terminal.

Abstract: In a flexible printed circuit (FPC) connection structure for a touch sensor, corrosion of an electrode terminal is prevented without reducing connection reliability. In a touch sensor, a tip of a first passivation layer and a tip of an FPC wiring are spaced apart from one another, and consequently an exposed portion, which is adjacent to a tipmost part and is not covered by the first passivation layer, is formed on a connection terminal. An FPC film includes a tip, which further extends from the FPC wiring and extends to a location at which it overlaps, in a plan view, the first passivation layer, and thereby a space is formed between the tip and the exposed portion. The touch sensor further includes an anti-rust material, which fills the space and thereby covers the exposed portion of the connection terminal.