Display panel, manufacturing method thereof and display device

The invention discloses a display panel, and belongs to the technical field of display. The display panel comprises a substrate, and a heightening structure, a first wire, a first planarization layer and a second wire which are sequentially arranged on the substrate. The heightening structure comprises a plurality of cushion blocks which are arranged on the substrate along the direction far away from the substrate, the first planarization layer is provided with a first via hole, the first wire and the second wire are connected through the first via hole, and the orthographic projection of each cushion block on the substrate is overlapped with the orthographic projection of the first via hole on the substrate. According to the invention, the depth of the first via hole can be reduced, so that the risk that the second wire is broken at the first via hole is reduced.