Patent ID: 7488570
Filing Date: 2009-02-10
Classification: C23C,H01J

Abstract:
1. A method for forming a metal pattern, comprising the steps of: (i) coating a photocatalytic compound onto a substrate to form a photocatalytic film layer wherein the photocatalytic compound is a Ti-containing organometallic compound which is capable of being converted to transparent amorphous TiO (ii) heating the coated substrate at a temperature not higher than 200° C. under conditions wherein the Ti-containing organometallic compound present on the substrate is converted to a transparent photocatalytic film layer of amorphous TiO (iii) coating a water-soluble polymeric compound comprising a photosensitizer selected from at least one of silver salts and silver halides onto the photocatalytic film layer of transparent amorphous TiO (iv) selectively exposing the two layers to light to form latent image centers for crystal growth; and (v) plating the resulting latent pattern with a metal to grow metal crystals thereon wherein the electrons of the photocatalytic compound are excited upon exposure to light such that the photocatalytic compound has activity.