Showa Denko K.k.

Osaka University

Eri Okazaki

Hiroshi Uchida

Hideki Ohata

Yasunao Miyamura

Kenji Shinozaki

Katsuaki Suganuma

Masanao Hara

Jinting Jiu

Teppei Araki

Masaya Nogi

Tohru Sugahara

Provided are a conductive pattern manufacturing method and a conductive pattern formed substrate, capable of easily achieving a narrow pitch. A metal nanowire layeris formed on the entirety of a part of at least one of the main faces of a substrate, pulsed light is irradiated thereto through a maskprovided with a light transmission portionformed in a predetermined pattern, and the metal nanowires in the metal nanowire layerat the region having the above predetermined pattern were sintered, to thereby obtain conductivity at the predetermined patterned region. Accordingly, a substrate provided with a conductive pattern having any selected pattern can be produced by simple steps.

Method for manufacturing conductive pattern and conductive pattern formed substrate

Provided are a metal nanowire production method capable of producing long and thin metal nanowires, and metal nanowires produced thereby. A metal nanowire production method comprising, a step for preparing a solution containing a metal salt, a polymer, at least one selected from a group consisting of halides, sulfides, carbonates, and sulfates, and an aliphatic alcohol, and a step for heating and reacting the solution at the temperature of 100&#xb0; C. to 250&#xb0; C. for 10 minutes or more while maintaining a practical shear stress applied to the solution at 10 mPa&#xb7;m or less, wherein, during the heating and reacting step, ultraviolet-visible absorption spectrum change of the solution is measured, and a reaction time is controlled on the basis of the ultraviolet-visible absorption spectrum information.

Method for producing metal nanowires and silver nanowires

Provided are a transparent electrode and a production method thereof, the transparent electrode using metal nanowires and/or metal nanotubes as conductive components, and showing favorable surface flatness, conductivity, and light transmittance. A transparent conductive ink is prepared by dispersing metal nanowires and/or metal nanotubes in a solution formed by dissolving a thermoset or thermoplastic binder resin having no fluidity within the range of 5 to 40&#xb0; C. to a solvent, the content of the binder resin being 100 to 2500 parts by mass relative to 100 parts by mass of the metal nanowires and/or metal nanotubes. An electrode pattern having a desired shape is printed on a substrate with the transparent conductive ink, and pulsed light is irradiated to the printed electrode pattern, to thereby obtain a transparent electrode having a surface resistance of 0.1 to 500&#x3a9;/&#x25a1; and a surface arithmetic average roughness Ra satisfying Ra&#x2266;5 nm.

Transparent electrode and method for producing same

Growing community of inventors

Tokyo, Japan

Eri Okazaki