Substrate, in particular glass substrate, supporting a photocatalytic layer coated with a protective thin layer

A structure, the structure including base material, in its at least part surface Shang has a layer anti-dirt of has light catalytic performance of titanium dioxide (TiO2) grass-roots, its features is by in of has light catalytic performance of layer is contains silicon and oxygen of no hole thin layer cover, the thin layer has cover capacity, also can guarantee on lower light catalytic layer for machinery and chemical protection, while keep TiO2 of light catalytic activity.