METHOD FOR PRODUCING PIGMENT NANOPARTICLE, METHOD FOR PRODUCING PIGMENT NANOPARTICLE DISPERSION, PIGMENT NANOPARTICLE DISPERSION CONTAINING PIGMENT NANOPARTICLE, COLORED PHOTOSENSITIVE RESIN COMPOSITION, PHOTOSENSITIVE TRANSFER MATERIAL, COLOR FILTER USING THEM, LIQUID CRYSTAL DISPLAY DEVICE AND CCD DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a method for producing a pigment nanoparticle, a method for efficiently producing a pigment nanoparticle in a dispersion having high dispersion stability and high concentration in a wide range of pigment, a method for producing an organic nanoparticle having a nanosize and a sharp particle size distribution peak, to obtain a pigment nanoparticle dispersion using the organic nanoparticle, a colored photosensitive resin composition, a photosensitive resin transfer material, a color filter that uses them, has a high contrast and exhibits excellent display properties and to provide a liquid crystal display device and a CCD device. PSOLUTION: The method for producing a pigment nanoparticle comprises, in precipitating organic pigment as a nanoparticle by mixing a pigment-containing fluid obtained by dissolving the organic pigment in a supercritical fluid or a subcritical fluid with a solvent for precipitation, adding a polymer dispersant having a weight-average molecular weight of 1,000 to the pigment-containing fluid before the mixing. PCOPYRIGHT: (C)2008,JPO&INPIT