Nissha Printing Co., Ltd.

Nissha Co., Ltd.

Hisaya Takayama

Yuki Matsui

Yoshihiro Sakata

Hideaki Nada

Hirotaka Shigeno

Hiroaki Uefuji

Itsuo Furukawa

Ikuko Mori

[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 filmof a Cu layerand CuNO-based blackening layers (and); a step of forming a resist layerin a predetermined region on the layered film; and a step of removing a partial region of the layered filmby bringing the layered filminto contact with an etchant.

Method for producing electrical wiring member and electrical wiring member

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.

Touch sensor and touch sensor manufacturing method

Growing community of inventors

Kyoto, Japan

Hisaya Takayama