Display panel, repair method, and display device are provided. The display panel includes: a base substrate; an array substrate including driving thin film transistors (TFTs); first electrodes connected to the TFTs in a one-to-one correspondence; a light-emitting structure including first light-emitting diodes (LEDs) and second LEDs; a second electrode; and one of first and second insulating layers. In each sub-pixel unit, a first LED electrode and a third LED electrode of a first LED is connected to a corresponding first electrode and the second electrode, respectively; the first insulating layer is formed between a second LED electrode of a second LED and the corresponding first electrode, and a fourth LED electrode of the second LED is connected to the second electrode; and the second insulating layer is formed between the fourth LED electrode and the second electrode, and the second LED electrode is connected to the corresponding first electrode.