Display panel and manufacturing method thereof, and display device

The invention discloses a display panel and a manufacturing method thereof, and a display device. The display panel comprises a substrate and a PLN layer arranged on the substrate, wherein the PLN layer is provided with a bonding area and a display area, the bonding area is used for arranging pins, the display area is used for arranging light-emitting elements, each pin comprises a functional conductive block and a virtual conductive block, the virtual conductive block is provided with a concave area, and inorganic layers are arranged on the virtual conductive blocks and the PLN layer. According to embodiments of the invention, the virtual conductive blocks in the bonding area of the display panel are patterned to enhance the adhesion capability of a film layer on the virtual conductive blocks, so the inorganic layers arranged on the virtual conductive blocks and the PLN film layer firmly lock and cover the film layer at the positions of the virtual conductive blocks, thereby avoiding the stripping of the fil