Display panel and preparation method thereof

The invention provides a display panel and a preparation method thereof, the display panel comprises a flexible substrate and a light-emitting functional layer located on the flexible substrate, and the light-emitting functional layer comprises an anode layer located on the flexible substrate, an organic light-emitting layer located on the anode layer and a cathode layer located on the organic light-emitting layer; wherein the cathode layer is a nanowire net, and one side, far away from the organic light-emitting layer, of the nanowire net is provided with a plurality of first grooves; according to the invention, the cathode layer is made of the nanowire net to form a one-dimensional nanowire structure, so that the bending capability of the cathode layer can be greatly enhanced, and the cathode layer is not easy to break; the pressing mechanism is adopted to form the first grooves in the side, away from the organic light-emitting layer, of the nanowire net through pressing, the interface total reflection of t