Display substrate, display panel and display device

The invention discloses a display substrate, a display panel and a display device and aims to solve the problem that the rubbing Mura in the alignment mark area of a display substrate is hard to eliminate, and the display quality of the display device is affected in the prior art. The display substrate comprises a substrate body and at least a film layer formed on the substrate body, and an alignment mark is formed on each film layer and is formed by dot matrixes. The display substrate has the advantages that the dot matrixes form each alignment mark, segment difference between the alignment mark and the peripheral film layer is lowered, the adverse effect on rubbing alignment can be reduced or eliminated, and the rubbing Mura generated in the alignment mark area is reduced or eliminated.