Patent ID: 7507447
Filing Date: 2009-03-24
Classification: C09D,C23C,H01B,Y10T

Abstract:
1. A method for producing a transparent conductive film which comprises the steps of coating a colloidal dispersion of metal nanoparticles on a substrate to form a coated layer, drying the coated layer and subjecting the coated layer to laser irradiation, wherein the colloidal dispersion comprises a mixture of nanoparticles consisting of a 0-valent metal selected from the group consisting of Au, Ag, Pt and Pd and nanoparticles comprising at least one substance selected from the group consisting of a metal oxide hardly soluble in water, a metal hydroxide hardly soluble in water and a metal carbonate hardly soluble in water, wherein the laser irradiation is effective to fuse the nanoparticles in the irradiated portion to form a continuous layer, wherein the nanoparticles which comprise at least one substance selected from the group consisting of a metal oxide hardly soluble in water, a metal hydroxide hardly soluble in water and a metal carbonate hardly soluble in water, comprise two or more metals selected from the group consisting of In, Ga, Al, Sn, Ge, Sb, Bi, and Zn.