Display panel comprising repair transistor and repair electrode and display device thereof

1 . A display panel comprising a repair transistor and a repair electrode, wherein the display panel comprises:

a substrate; and

a drive circuit layer and a light-emitting structure layer disposed on the substrate, wherein

the drive circuit layer comprises a driving transistor, the repair transistor, a power signal line, and the repair electrode;

an anode of the light-emitting structure layer is respectively connected to a source of the driving transistor and a drain of the repair transistor, a cathode of the light-emitting structure layer is connected to a source of the repair transistor, a drain of the driving transistor is connected to the power signal line, and a gate of the repair transistor is connected to the repair electrode; and

the repair electrode is configured to connect the gate of the repair transistor to the power signal line in response to a defect of a bright spot in a repaired display panel;

wherein the repair electrode and the power signal line have an overlapping area.

2 . The display panel comprising the repair transistor and the repair electrode according to claim 1 , wherein the gate of the repair transistor and the repair electrode are disposed in a gate layer of the drive circuit layer; the drive circuit layer comprises a first metal layer, the power signal line is disposed in the first metal layer, the first metal layer comprises a first metal block, and the repair electrode and the first metal block have an overlapping area.

3 . The display panel comprising the repair transistor and the repair electrode according to claim 2 , wherein the display panel further comprises a second insulating layer, and the second insulating layer is disposed between the gate layer and the first metal block; and

wherein in response to an abnormal bright spot in a light-emitting device, the repair electrode is laser soldered with the first metal block to electrically connect the repair electrode to the first metal block.

4 . The display panel comprising the repair transistor and the repair electrode according to claim 3 , wherein the drive circuit layer comprises an active layer, and the active layer comprises a drain connection area of the driving transistor and a source connection area of the driving transistor, a drain connection area of the repair transistor, a channel area of the repair transistor, and a source connection area of the repair transistor; and wherein the first metal layer further comprises a source of the repair transistor, a drain of the repair transistor, the source of the driving transistor, and the drain of the driving transistor.

5 . The display panel comprising the repair transistor and the repair electrode according to claim 4 , wherein the display panel further comprises a second metal layer disposed between the substrate and the active layer, and the power signal line further comprises a second metal block on the second metal layer.

6 . The display panel comprising the repair transistor and the repair electrode according to claim 5 , wherein the display panel further comprises a first via hole, wherein the first metal block is electrically connected to the second metal block through the first via hole;

a second via hole, wherein the source of the repair transistor is electrically connected to the source connection area of the repair transistor through the second via hole; and

a third via hole, wherein the source of the repair transistor is electrically connected to a cathode of the light-emitting device through the third via hole.

7 . The display panel comprising the repair transistor and the repair electrode according to claim 6 , wherein the display panel further comprises:

a fourth via hole, wherein the drain of the repair transistor is electrically connected to the drain connection area of the repair transistor through the fourth via hole;

a fifth via hole, wherein the source of the driving transistor is electrically connected to the source connection area of the driving transistor through the fifth via hole;

a sixth via hole, wherein the drain of the driving transistor is electrically connected to the drain connection area of the driving transistor through the sixth via hole; and

a seventh via hole, wherein the source of the driving transistor is electrically connected to the anode of the light-emitting device through the seventh via hole.

8 . The display panel comprising the repair transistor and the repair electrode according to claim 2 , wherein the display panel further comprises: a second insulating layer, and the second insulating layer is disposed between the gate layer and the first metal block; and

wherein the repair electrode is electrically connected to the first metal block.

9 . A display device comprising a display panel, the display panel comprising a repair transistor and a repair electrode, wherein the display panel comprises:

a substrate; and

a drive circuit layer and a light-emitting structure layer disposed on the substrate, wherein

the drive circuit layer comprises a driving transistor, the repair transistor, a power signal line, and the repair electrode;

an anode of the light-emitting structure layer is respectively connected to a source of the driving transistor and a drain of the repair transistor, a cathode of the light-emitting structure layer is connected to a source of the repair transistor, a drain of the driving transistor is connected to the power signal line, and a gate of the repair transistor is connected to the repair electrode; and

the repair electrode is configured to connect the gate of the repair transistor to the power signal line in response to a defect of a bright spot in a repaired display panel;

and wherein the display panel is a flexible display panel, and the repair electrode and the power signal line have an overlapping area.

10 . The display device comprising the repair transistor and the repair electrode according to claim 9 , wherein the gate of the repair transistor and the repair electrode are disposed in a gate layer of the drive circuit layer; the drive circuit layer comprises a first metal layer, the power signal line is disposed in the first metal layer, the first metal layer comprises a first metal block, and the repair electrode and the first metal block have an overlapping area.

11 . The display device comprising the repair transistor and the repair electrode according to claim 10 , wherein the display panel further comprises a second insulating layer, and the second insulating layer is disposed between the gate layer and the first metal block; and

wherein in response to an abnormal bright spot in a light-emitting device, the repair electrode is laser soldered with the first metal block to electrically connect the repair electrode to the first metal block.

12 . The display device comprising the repair transistor and the repair electrode according to claim 11 , wherein the drive circuit layer comprises an active layer, and the active layer comprises a drain connection area of the driving transistor and a source connection area of the driving transistor, a drain connection area of the repair transistor, a channel area of the repair transistor, and a source connection area of the repair transistor; and wherein the first metal layer further comprises a source of the repair transistor, a drain of the repair transistor, the source of the driving transistor, and the drain of the driving transistor.

13 . The display device comprising the repair transistor and the repair electrode according to claim 12 , wherein the display panel further comprises a second metal layer disposed between the substrate and the active layer, and the power signal line further comprises a second metal block on the second metal layer.

14 . The display device comprising the repair transistor and the repair electrode according to claim 13 , wherein the display panel further comprises a first via hole, wherein the first metal block is electrically connected to the second metal block through the first via hole;

a second via hole, wherein the source of the repair transistor is electrically connected to the source connection area of the repair transistor through the second via hole; and

a third via hole, wherein the source of the repair transistor is electrically connected to a cathode of the light-emitting device through the third via hole.

15 . The display device comprising the repair transistor and the repair electrode according to claim 14 , wherein the display panel further comprises:

a fourth via hole, wherein the drain of the repair transistor is electrically connected to the drain connection area of the repair transistor through the fourth via hole;

a fifth via hole, wherein the source of the driving transistor is electrically connected to the source connection area of the driving transistor through the fifth via hole;

a sixth via hole, wherein the drain of the driving transistor is electrically connected to the drain connection area of the driving transistor through the sixth via hole; and

a seventh via hole, wherein the source of the driving transistor is electrically connected to the anode of the light-emitting device through the seventh via hole.

16 . The display device comprising the repair transistor and the repair electrode according to claim 10 , wherein the display panel further comprises: a second insulating layer, and the second insulating layer is disposed between the gate layer and the first metal block; and

wherein the repair electrode is electrically connected to the first metal block.

17 . The display device comprising the repair transistor and the repair electrode according to claim 9 , wherein the power signal line is configured to transmit a power positive signal, and the power positive signal is configured to turn on the repair transistor.

18 . The display device comprising the repair transistor and the repair electrode according to claim 9 , wherein the substrate is a glass substrate.