A displaying region of a displaying backplane is delimited into a first displaying region and a second displaying region, the light transmittance of the first displaying region is less than that of the second displaying region, the displaying backplane has a metal signal line in a trace region, a plurality of sub-pixels located within the first displaying region are connected to a common cathode, and the common cathode is connected to the metal signal line. At least some of the sub-pixels located within the second displaying region are connected to independent cathodes, the independent cathodes are separate from each other, the displaying backplane further includes a first electrically conductive layer, and the independent cathodes are connected to the metal signal line via the first electrically conductive layer. The first electrically conductive layer is a planar electrode, and the orthographic projection of the planar electrode covers the second displaying region.