Alps Alpine Co., Ltd.

Alps Electric Co., Ltd.

Yasuyuki Kitamura

Tomoyuki Yamai

Mitsuo Bito

Manabu Yazawa

Yuta Hiraki

Yoshihiro Taguchi

Tomofumi Oba

Yoshiyuki Asabe

Setsuo Ishibashi

Yui Abe

Koji Oguma

Keita Tashiro

Sota Takahashi

Ken Yamamura

Tomoya Kuwabara

An input device includes a plurality of first transparent electrodes, a plurality of second transparent electrodes, coupling portions each electrically connecting two adjacent second transparent electrodes of the second transparent electrodes, and bridge portions each electrically connecting two adjacent first transparent electrodes of the first transparent electrodes. The first and second transparent electrodes are arranged in directions orthogonal to each other and are formed of a material containing conductive nanowires. The bridge portions each include a bridge wiring part, an insulating layer, and a buffer layer. The buffer layer is disposed between each of the coupling portions and the insulating layer. The buffer layer is formed of a light-transmissive, inorganic oxide-based material.

Input device having transparent electrodes containing nanowires and display apparatus with input device

A capacitive sensor has: a base material; a plurality of first transparent electrodes arranged along a first direction on one main surface of the base material; a plurality of second transparent electrodes arranged along a second direction that closes the first direction, the second transparent electrode including conductive nanowires; a link that electrically connects two adjacent first transparent electrodes to each other; a bridge wiring part provided at a portion where the bridge wiring part closes the link, the bridge wiring part electrically connecting two adjacent second transparent electrodes to each other and including an amorphous oxide material; and a reflection reduction layer that has a refractive index higher than the refractive index of the second transparent electrode and lower than the refractive index of the bridge wiring part.

Capacitive sensor

A conductor includes (i) a substrate, (ii) a transparent conductive film formed on the substrate and including a silver nanowire, (iii) a metal film formed over the transparent conductive film such that at least a portion thereof overlaps the transparent conductive film, and (iv) a buffer film provided between the transparent conductive film and the metal film, the buffer film having adhesion to each of the transparent conductive film and the metal film, and not impeding conductivity between the transparent conductive film and the metal film. Preferably, the buffer film is formed of an organic material having respective functional groups capable of bonding to the transparent conductive film and the metal film.

Conductor and method of manufacturing the same

A capacitive sensor includes a base material provided with a pattern of a light-transmissive conductive film. The light-transmissive conductive film contains metal nanowires. The pattern includes a detection pattern of a plurality of detection electrodes arranged with intervals, a plurality of lead-out wirings linearly extending in a first direction from corresponding ones of the detection electrodes, and a resistance-setting section connected to at least any one of the lead-out wirings and including a portion extending in a direction not parallel to the first direction.

A capacitive sensor includes a base material provided with a pattern of a light-transmissive conductive film. The light-transmissive conductive film contains metal nanowires. The pattern includes a detection pattern formed of a plurality of detection electrodes arranged with intervals and a plurality of lead-out wirings linearly extending in a first direction from the corresponding ones of the plurality of the detection electrodes. At least one of the detection electrodes of the detection pattern includes a current path-setting section for elongating the linear path length of the current from the detection electrode toward the lead-out wiring.

A conductor includes: a transparent conductive film which is formed on a transparent substrate and includes a silver nanowire; and a metal film of which at least a portion is formed to overlap the transparent conductive film, in which a portion in which the transparent conductive film and the metal film overlap each other includes a buffer film which has adhesion to each of the transparent conductive film and the metal film and does not impede conduction between the transparent conductive film and the metal film. Preferably, the buffer film is, for example, an ITO film, and at this time, an upper surface of the transparent conductive film is a reverse-sputtered surface.

A method for patterning a light transmitting electrically conductive member uses a light transmitting laminate material in which an electrically conductive layer including an overcoat layer and silver nanowires embedded therein is formed on a surface of a light transmitting base film and includes a step of treating a surface of the electrically conductive layer which is not covered with a resist layer using an iodine solution to at least partially iodize the silver nanowires and a step of applying a thiosulfate solution to the surface of the electrically conductive layer which is not covered with the resist layer to remove a silver iodide exposed to a surface of the overcoat layer. Since a white cloudy or a whitened silver iodide is removed, the optical transmission characteristics of the non-electrically conductive region can be improved.

Growing community of inventors

Tokyo, Japan

Yasuyuki Kitamura