Display panel and manufacturing method thereof, and display device

A manufacturing method of a display panel, comprising:

• forming a plurality of driving electrodes on a surface of a substrate;
• fixing a micro light emitting diode onto the surface of the substrate, wherein respective electrodes of the micro light emitting diode are located at a side of the micro light emitting diode facing away from the substrate;
• and
• forming a plurality of driving wires by employing a first patterning process, wherein the plurality of driving wires respectively electrically couple the respective electrodes of the micro light emitting diode to the plurality of driving electrodes, wherein:
• the method further comprises before forming the plurality of driving wires by employing the first patterning process, forming a buffer structure above the substrate;
• wherein the buffer structure covers at least a portion of a sidewall of the micro light emitting diode, the plurality of driving wires are located on a side of the buffer structure away from the sidewall of the micro light emitting diode, a surface, facing the plurality of driving wires, of a part of the buffer structure contacting a joint between a surface of the micro light emitting diode facing away from the substrate and the sidewall of the micro light emitting diode is a convex surface, and a surface, facing the plurality of driving wires, of a part of the buffer structure contracting a joint between the micro light emitting diode and the substrate is a convex surface.