Matsushita Electric Industrial Co., Ltd.

Akiyoshi Hattori

Akihiko Yoshida

Nobuyuki Yoshiike

Atsushi Nishino

Yoshihiro Hori

Shinji Tanaka

Masaki Ikeda

Katsuya Morinaka

Shigeyuki Inoue

Hirokazu Tachibana

Yasuhiro Shindo

Kouzou Igarashi

Yoshikatsu Inoue

Behavior determining apparatus, care system, care residence and behavior information specifying apparatus and system

Method of manufacturing gas sensors

[Purpose] An object of the present invention is to provide a composition for use in a formation of transparent and electrically conductive film having a low electric resistance and a high transmittance and a method for making the film mentioned above. [Composition] A mixture of inorganic indium compound and organic tin compound is combined with organic compound capable of coordinating with either of indium and tin to form an organic solution. When the mixture is heated, the inorganic indium compound and the organic tin compound coordinating partially with the organic compound react with water of crystallization of inorganic indium compound. The organic tin compound is partially subjected to hydrolysis to form an intermediate complex compound including indium and tin. This suppresses the evaporation of tin and generates a uniform film having a high transmittance and a low electric resistance. An addition of polyhydric alcohol increases the viscosity of the solution and gives a high stability to a resultant film obtained by applying the composition to the substrate and firing.

Composition for use in a transparent and electrically conductive film

Deodorizing and sterilizing device having catalyst deterioration sensing

Metal oxide film resistor

An object of the present invention is to provide a composition for use in a formation of transparent and electrically conductive film having a low electric resistance and a high transmittance and a method for making the film mentioned above. A mixture of inorganic indium compound and organic tin compound is combined with organic compound capable of coordinating with either of indium and tin to form an organic solution. When the mixture is heated, the inorganic indium compound and the organic tin compound coordinating partially with the organic compound react with water of crystallization of inorganic indium compound. The organic tin compound is partially subjected to hydrolysis to form an intermediate complex compound including indium and tin. This suppresses the evaporation of tin and generates a uniform film having a high transmittance and a low electric resistance. An addition of polyhydric alcohol increases the viscosity of the solution and gives a high stability to a resultant film obtained by applying the composition to the substrate and firing.

Printing is conducted at the transparent conducting film unnecessary portion on a substrate 1 with a masking ink having a higher thermal decomposition temperature than that of the transparent conducting film forming composition, and the ink is dried and cured by heat or light to form a masking pattern 2. The portion where a transparent conducting film is to be formed is preferably subjected to ozone cleaning and then coated with a transparent conducting film forming composition comprising an indium compound and/or a tin compound and a solvent to form a transparent conducting film forming composition layer 3. The thus worked substrate is subjected to a heat treatment, causing thermal decomposition of the masking pattern 2 after formation of a transparent conducting film. Then the residues of the masking ink and the transparent conducting film are removed to finally obtain a desired patterned transparent conducting film 4.

Method for forming patterned transparent conducting film

Growing community of inventors

Yawata, Japan

Akiyoshi Hattori