Display panel and repairing method of display panel

1 . A display panel, comprising:

an array substrate; and a plurality of light-emitting devices disposed in an array on the array substrate, the light-emitting devices comprising a plurality of first electrodes and a second electrode, the second electrode disposed on one side of the first electrodes away from the array substrate; wherein the array substrate comprises an extending electrode, and at least one of the first electrodes is connected to the extending electrode; the extending electrode is disposed along a thickness direction of the array substrate and extends in the array substrate, and one end of the extending electrode is floating, wherein the extending electrode comprises two disconnected parts, so that no electrical connection is presented between the first electrodes and the end of the extending electrode which is floating, wherein the extending electrode comprises a first extending electrode and a second extending electrode; the first extending electrode and the second extending electrode are disposed between at least two adjacent first electrodes, and the first extending electrode and the second extending electrode are connected to adjacent two of the first electrodes, respectively.

2 . The display panel as claimed in claim 1 , wherein at least one of the first electrodes connected to the first extending electrode and at least one of the first electrodes connected to the second extending electrode correspond to light-emitting devices of different colors, respectively.

3 . The display panel as claimed in claim 1 , wherein a melting point of a material of the extending electrode is greater than a melting point of a material of the first electrodes.

4 . The display panel as claimed in claim 3 , wherein the material of the extending electrode comprises any one of copper, aluminum, or graphene.

5 . A repairing method of a display panel, comprising following steps:

step S 100 : providing an array substrate, wherein the array substrate comprises a first signal wiring and a second signal wiring;

step S 200 : forming a plurality of first electrodes of a plurality of light-emitting devices disposed in a plurality of arrays on the array substrate, wherein the first electrodes comprise a first sub-electrode and a second sub-electrode adjacent to each other; a residual electrode is generated between the first sub-electrode and the second sub-electrode, and the residual electrode is connected between the first sub-electrode and the second sub-electrode;

step S 300 : irradiating laser from one side of the array substrate to form a first through hole and a second through hole, wherein the first through hole and the second through hole are defined respectively at corresponding parts of two ends of the residual electrode; a portion of the first through hole is defined between the first sub-electrode and the first signal wiring, and a portion of the second through hole is defined between the second sub-electrode and the second signal wiring, and another portions of the first through hole and the second through hole both goes through a base of the array substrate;

step S 400 : injecting a conductive material into the first through hole and the second through hole to form an extending electrode, wherein the extending electrode comprises a first extending electrode and a second extending electrode; the first extending electrode is connected to the first sub-electrode and the first signal wiring, and the second extending electrode is connected to the second sub-electrode and the second signal wiring, so that the first signal wiring, the first extending electrode, the first sub-electrode, the residual electrode, the second sub-electrode, the second extending electrode, and the second signal wiring are electrically connected in sequence; wherein a melting point of a material of the extending electrode is greater than a melting point of a material of the first electrodes;

step S 500 : supplying electrical signals to the first signal wiring and the second signal wiring, respectively, such that the residual electrode between the first extending electrode and the second extending electrode is melted and disconnected; wherein a voltage difference of the electrical signals to the first signal wiring and the second signal wiring is presented to make the residual electrode melt and disconnect; and

step S 600 : irradiating the first extending electrode and the second extending electrode with laser, wherein the first extending electrode is at least partially melted to disconnect the first sub-electrode and the first signal wiring, and the second extending electrode is at least partially melted to disconnect the second sub-electrode and the second signal wiring.

6 . The repairing method of the display panel as claimed in claim 5 , wherein the material of the extending electrode comprises any one of copper, aluminum, or graphene.

7 . The repairing method of the display panel as claimed in claim 5 , wherein in the step S 500 , a voltage difference between the first signal wiring and the second signal wiring is 15V to 30V.

8 . The repairing method of the display panel as claimed in claim 5 , wherein the first signal wiring is one of a power signal wiring or a cathode signal wiring, the second signal wiring is another of the power signal wiring and the cathode signal wiring.

9 . The repairing method of the display panel as claimed in claim 5 , wherein after the step S 600 , the method further comprises following step:

step S 700 : forming a light-emitting material layer on the first electrodes, forming a second electrode of the light-emitting devices on the light-emitting material layer, and forming a package layer on the second electrode.

10 . The display panel as claimed in claim 1 , wherein the array substrate comprises a base and a transistor layer, and the transistor layer is disposed on the base; the array substrate is provided with a through hole, the through hole goes through the base and further extends into the transistor layer, and the extending electrode is filled in the through hole.

11 . The display panel as claimed in claim 1 , wherein the array substrate further comprises a first insulating layer, the one end of the extending electrode is in direct contact with the first insulating layer.