The invention is concerned with the dual metal mosaic structure, including: the base, the dielectric layer, the hard mask layer, the touching window, and the lead; the dielectric layer is located on the base; the hard mask layer is located on the dielectric layer; the touching window is located in the dielectric layer, the horizontal section of the touching is the dissymmetry circled outline; the lead is located in the hard mask layer and the dielectric layer, it is also on the touching window and electronic connection with it, the lead is with a side protuberance and located on the edge of the touching window. |