Method for producing shape-anisotropic metal particulate, colored composition, photosensitive transfer material, black image-fitted substrate, color filter and liquid crystal display device

Abstract

Disclosed is a method for producing shape-anisotropic metal particles which is characterized by comprising a step wherein a metal compound is reduced in the presence of a polymer dispersing agent having a mercapto group in a molecule. Also disclosed is a colored composition which is obtained by having a solvent having an SP value of not more than 25.8 MPa<1 / 2> contain the metal particles produced by the above-described method.

Description

Method for producing shape anisotropic metal particles, colored composition, photosensitive transfer material, substrate with black image, color filter, and liquid crystal display element technical field The present invention relates to a method for producing shape-anisotropic metal particles, a coloring composition containing the shape-anisotropic metal particles, a photosensitive transfer material, a substrate with a black image, a color filter, and a liquid crystal display element. Background technique The coloring composition for black materials is widely used in printing inks, inkjet inks, resists, solder resists, partition walls of plasma display panels (PDPs), dielectric patterns, electrode (conductor circuit) patterns, and configurations of electronic parts. Light-shielding images such as line patterns, conductive paste, conductive film, black matrix (black matrix), etc. The light-shielding image includes black edges, red, blue, green In addition to the grid-like ...

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Problems solved by technology

However, since this method requires a vacuum film-forming process or an etching process called a vapor deposition method or a sputtering method, there is a problem that the cost increases and the load on the environment cannot be ignored.

However, in the method described in Patent Document 6, the length of the particles varies, so a wide range of absorption bands different from that of a single particle can be obtained, but it is difficult to obtain particles with a desired color tone.

As described above, it is difficult to prepare a coloring composition that produces a color tone based on shape anisotropy and has dispersion stability that reaches a practical value as a display material

Furthermore, although these metal fine particles are dispersed in highly polar solvents such as water to lower alcohols, it is difficult to prepare metal fine particles dispersed in low-polarity organic solvents without aggregation.

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