Driving backplane, display panel and display device

A display panel, comprising:

• a driving backplane and a plurality of micro light-emitting diodes;
• wherein the driving backplane comprises:
• a base substrate, a driving circuit arranged on the base substrate, an insulation layer on a side of the driving circuit facing away from the base substrate, a plurality of first tip structures arranged on a side of the insulation layer facing away from the base substrate, and a plurality of contact electrodes arranged on the side of the insulation layer facing away from the base substrate;
• wherein the driving circuit comprises a plurality of output terminals, the insulation layer comprises a plurality of openings, the output terminals and the openings are in a one-to-one correspondence, and the contact electrodes are electrically connected with the output terminals through the openings;
• and each of the contact electrodes comprises a plurality of second tip structures, wherein each of the second tip structures is configured to cover one of the first tip structures;
• wherein a leading-out electrode of each of the micro light-emitting diodes is bound to the contact electrodes of the driving backplane;
• wherein the second tip structures corresponding to the same contact electrode are arranged along a plurality of straight lines crossing each other,
• wherein some of the second tip structures corresponding to the same contact electrode are distributed on at least one concentric circle with one of these second tip structures being arranged at a center of the concentric circle.

A display device comprising a display panel, wherein the display panel comprises a driving backplane and a plurality of micro light-emitting diodes;

• wherein the driving backplane comprises:
• a base substrate, a driving circuit arranged on the base substrate, an insulation layer on a side of the driving circuit facing away from the base substrate, a plurality of first tip structures arranged on a side of the insulation layer facing away from the base substrate, and a plurality of contact electrodes arranged on the side of the insulation layer facing away from the base substrate;
• wherein the driving circuit comprises a plurality of output terminals, the insulation layer comprises a plurality of openings, the output terminals and the openings are in a one-to-one correspondence, and the contact electrodes are electrically connected with the output terminals through the openings;
• and each of the contact electrodes comprises a plurality of second tip structures, wherein each of the second tip structures is configured to cover one of the first tip structures;
• wherein a leading-out electrode of each of the micro light-emitting diodes is bound to the contact electrodes of the driving backplane;
• wherein the second tip structures corresponding to the same contact electrode are arranged along a plurality of straight lines crossing each other,
• wherein some of the second tip structures corresponding to the same contact electrode are distributed on at least one concentric circle with one of these second tip structures being arranged at a center of the concentric circle.