Array substrate, display panel and display device

1. An array substrate having a display area and a non-display area, the non-display area including a first bonding region and a fan-out region located between the display area and the first bonding region, the array substrate comprising:

a plurality of pixel columns disposed in the display area, each of the plurality of pixel columns including a plurality of light-emitting units that are arranged in a second direction, the second direction being perpendicular to a direction in which an edge of the display area proximate to the first bonding region extends;

at least three first power supply input terminals disposed in the first bonding region, each first power supply input terminal being connected to multiple pixel columns of the plurality of pixel columns, so as to provide a first power supply signal to the multiple pixel columns; and

at least three first fan-out structures located in the fan-out region, each first power supply input terminal being electrically connected to the multiple pixel columns of the plurality of pixel columns through one first fan-out structure, and resistances of the first fan-out structures being equal, wherein

each first power supply input terminal refers to a first power supply input pad; and

each first fan-out structure of the at least three first fan-out structures includes a plurality of first conductive units; the plurality of first conductive units are parallel to each other, and each independently electrically connected to a corresponding one of at least three first power supply input terminals; and each of the plurality of first conductive units is electrically connected to at least one of the plurality of pixel columns.

2. The array substrate according to claim 1 , wherein pixel columns connected to different first power supply input terminals are different.

3. The array substrate according to claim 1 , wherein

each first power supply input terminal is electrically connected to at least two pixel columns.

4. The array substrate according to claim 1 , wherein a light-emitting unit includes a first electrode; and

the array substrate further comprises a plurality of anode lines located in the display area, and the first power supply input terminal is electrically connected to first electrodes of light-emitting units included in at least one of the plurality of pixel columns through at least one anode line.

5. The array substrate according to claim 1 , further comprising pixel circuits arranged in an array, wherein each pixel circuit is electrically connected to a first electrode of a corresponding light-emitting unit, and is configured to provide a driving signal to the corresponding light-emitting unit; and

each first power supply input terminal is electrically connected to pixel circuits that are electrically connected to light-emitting units included in the multiple of pixel columns of the plurality of pixel columns, so as to provide the first power supply signal to the pixel circuits that are electrically connected to the first power supply input terminal.

6. The array substrate according to claim 1 , further comprising:

at least three second power supply input terminals disposed in the first bonding region, each second power supply input terminal being connected to at least one pixel column of the plurality of pixel columns, so as to provide a second power supply signal to the at least one pixel column connected to the second power supply input terminal.

7. The array substrate according to claim 6 , wherein pixel columns connected to different second power supply input terminals are different.

8. The array substrate according to claim 6 , wherein

the array substrate further comprises at least three second fan-out structures located in the fan-out region, each second power supply input terminal is electrically connected to the at least one pixel column of the plurality of pixel columns through one second fan-out structure, and resistances of the second fan-out structures are equal.

9. The array substrate according to claim 8 , wherein

the first fan-out structures and the second fan-out structures are alternately arranged in a first direction, the first direction being perpendicular to the second direction.

10. The array substrate according to claim 8 , wherein each second fan-out structure of the at least three second fan-out structures includes one second conductive unit, and the second conductive unit is electrically connected to the at least one pixel column of the plurality of pixel columns; or

the second fan-out structure includes a plurality of second conductive units, and each of the plurality of second conductive units is electrically connected to at least one pixel column.

11. The array substrate according to claim 6 , wherein each second power supply input terminal is electrically connected to one pixel column; or

each second power supply input terminal is electrically connected to at least two pixel columns.

12. The array substrate according to claim 6 , further comprising pixel circuits arranged in an array, wherein a light-emitting unit includes a first electrode and a second electrode, and each pixel circuit is electrically connected to a first electrode of a corresponding light-emitting unit, and is configured to provide a driving signal to the corresponding light-emitting unit; and

each second power supply input terminal is electrically connected to second electrodes of light-emitting units included in the at least one pixel column of the plurality of pixel columns, so as to provide the second power supply signal to the second electrodes of the light-emitting units included in the at least one pixel column of the plurality of pixel columns.

13. The array substrate according to claim 12 , further comprising a plurality of anode lines located in the display area, wherein

the first power supply input terminal is electrically connected to pixel circuits that are electrically connected to the light-emitting units included in the multiple pixel columns through multiple anode lines of the plurality of anode lines; and

the second electrode of the light-emitting unit is a portion of a cathode layer, and the second power supply input terminal is electrically connected to the cathode layer.

14. The array substrate according to claim 6 , further comprising a plurality of anode lines and a plurality of cathode lines that are located in the display area, wherein

each light-emitting unit includes a first electrode and a second electrode; and the first power supply input terminal is electrically connected to first electrodes of light-emitting units included in at least one of the plurality of pixel columns through at least one anode line, and the second power supply input terminal is electrically connected to second electrodes of the light-emitting units included in at least one of the plurality of pixel columns through at least one cathode line.

15. The array substrate according to claim 1 , wherein the non-display area further includes a second bonding region located on a side of the display area away from the first bonding region in the second direction; and

the array substrate further comprises a plurality of data signal input terminals located in the second bonding region, and the plurality of data signal input terminals are configured to provide data signals to light-emitting units.

16. A display panel, comprising the array substrate according to claim 1 .

17. A display device, comprising the display panel according to claim 16 .

18. The display device according to claim 17 , wherein the non-display area of the array substrate includes the first bonding region and a second bonding region, the second bonding region is located on a side of the display area away from the first bonding region in the second direction; and the display device further comprises a first external driving circuit bonded to the first bonding region and a second external driving circuit bonded to the second bonding region.