Substrate coated with a laminated photocatalytic film

Provide a way to ensure the photocatalytic effect and prevents surface reflection or interference color composites. Transparent substrates 12 single side alternately on laminated multilayer photocatalytic TiO2 layer, 14-1, ..., and 14-n, and lower refractive index than the Photocatalyst TiO2 multilayer SiO2 layer, 16-1, ..., and 16-n-1, in the outermost porous hydrophilic photocatalytic TiO2 layer above laminates 17, constitute a laminated membrane. The photocatalytic TiO2 layer, 14-1, ..., and 14-n, and in the mid-tier, 16-1, ..., 16-n-1 as well as porous hydrophilic coating thickness of 17 5nm~50nm, respectively. 18 laminated membrane lamination is 18 per cent. 18 the overall film thickness of laminated film for about 400nm.