Patent ID: 6913811
Filing Date: 2005-07-05
Classification: C04B,G02B,Y10T

Abstract:
1. A photocatalytic member having photocatalytic and color forming properties; said member comprising: a substrate; and a laminate deposited on the substrate, which laminate has a plurality of thin-film photocatalytic layers, each consisting of a photocatalytic material, and a plurality of thin-film support layers; wherein the plurality of thin-film photocatalytic layers and the plurality of thin-film support layers alternate with each other and contact sequentially at surface areas, wherein each thin-film support layer has a smaller surface area than the surface area of the contacting thin-film photocatalytic layers, leaving a space between adjacent photocatalytic layers and next to a support layer, said space being open to the outside of said member, the thin-film photocatalytic layer nearest the substrate being the lowermost of said thin-film photocatalytic layers, the remaining layers being sequentially more distant from the substrate; and wherein said plurality of thin-film photocatalytic layers consist of titanium dioxide.