A display panel, a display panel manufacturing method, and a display screen are provided. The display panel includes: a substrate, the substrate including a plurality of sub-pixel regions, each of the sub-pixel regions including a first region and a second region, the first region being provided with the substrate, a buffer layer, and a pixel circuit layer, and the second region being provided with the substrate; and a first electrode disposed on the second region of each of the sub-pixel region and directly contacting the substrate. Each sub-pixel region is divided into the first region and the second region, the first region is provided with the substrate, the buffer layer and the pixel circuit layer, the second region is provided with the substrate and the first electrode directly contacting the substrate, and no inorganic film is provided between the first electrode and the substrate.