Display panel and display device with symmetrically arranged structures corresponding to same-color light-emitting units

1. A display panel, comprising:

a base substrate;

an array layer, on a side of the base substrate;

a plurality of light-emitting units, on a side of the array layer away from the base substrate, wherein a light-emitting unit of the plurality of light-emitting units includes a first electrode, a light-emitting layer, and a second electrode which are sequentially disposed away from the base substrate;

a pixel defining layer, on the side of the array layer away from the base substrate, wherein the pixel defining layer includes a plurality of pixel openings, the plurality of pixel openings corresponds to the plurality of light-emitting units, and a projection of the light-emitting layer on the pixel defining layer is within a pixel opening; and

a first metal part, between the array layer and the first electrode, wherein:

the first metal part is electrically connected to the first electrode through a first via;

along a direction perpendicular to the base substrate, an overlapping portion of the first metal part and the pixel opening is a first overlapping portion; along a first direction, within a first preset distance, at least two first overlapping portions corresponding to same-color light-emitting units are arranged according to a first symmetry rule; and the first direction is in parallel with the base substrate,

wherein the first preset distance is a width occupied by a number of consecutive adjacent rows of light-emitting units along the first direction; and

the first symmetry rule is an axial symmetry according to a first symmetry axis;

and the first symmetry axis is a symmetry axis of two same-color light-emitting units corresponding to two first overlapping portions symmetrically arranged along the first direction; or

the first symmetry rule is a central symmetry according to a first symmetry center; and the first symmetry center is a symmetry center of two same-color light-emitting units corresponding to two first overlapping portions symmetrically arranged along the first direction.

2. The display panel according to claim 1 , wherein:

along a second direction, within a second preset distance, at least two first overlapping portions corresponding to same-color light-emitting units are arranged according to a second symmetry rule; and the second direction is in parallel with the base substrate and perpendicular to the first direction, wherein the second preset distance is a length occupied by a number of consecutive adjacent rows of light-emitting units along the second direction.

3. The display panel according to claim 2 , wherein:

the first direction is a row arrangement direction of the plurality of light-emitting units in the display panel, and the second preset distance is greater than or equal to the first preset distance.

4. The display panel according to claim 2 , wherein:

along the direction perpendicular to the base substrate, the first via and the pixel opening are overlapped with each other; and

along the first direction, within a third preset distance, at least two first vias corresponding to same-color light-emitting units are arranged according to the first symmetry rule; and/or

along the second direction, within a fourth preset distance, at least two first vias corresponding to same-color light-emitting units are arranged according to the second symmetry rule; and the second direction is in parallel with the base substrate and perpendicular to the first direction.

5. The display panel according to claim 4 , wherein:

the first direction is a row arrangement direction of the plurality of light-emitting units in the display panel, and the fourth preset distance is less than or equal to the second preset distance.

6. The display panel according to claim 2 , wherein:

the first direction is a row arrangement direction of the plurality of light-emitting units in the display panel; and

the second symmetry rule is a central symmetry according to a second symmetry center; and the second symmetry center is a symmetry center of two same-color light-emitting units corresponding to two first overlapping portions symmetrically arranged along the second direction.

7. The display panel according to claim 1 , wherein:

along the direction perpendicular to the base substrate, the first via and the pixel opening are not overlapped with each other.

8. The display panel according to claim 7 , wherein:

along a second direction, a distance between the first via and the pixel opening is greater than 1.5 μm; and the second direction is in parallel with the base substrate and perpendicular to the first direction.

9. The display panel according to claim 1 , wherein:

along the direction perpendicular to the base substrate, the first via and the pixel opening are overlapped with each other; and

along the first direction, within a third preset distance, at least two first vias corresponding to same-color light-emitting units are arranged according to the first symmetry rule.

10. The display panel according to claim 9 , wherein:

the first direction is a row arrangement direction of the plurality of light-emitting units in the display panel, and the third preset distance is less than or equal to the first preset distance.

11. The display panel according to claim 1 , wherein:

the array layer includes a plurality of pixel circuits, the plurality of pixel circuits corresponds to the plurality of light-emitting units, and the first metal part and a pixel circuit are electrically connected through a second metal part, wherein:

the second metal part and the pixel opening have a second overlapping portion; and along the first direction, within a fifth preset distance, at least two second overlapping portions corresponding to same-color light-emitting units are arranged according to the first symmetry rule.

12. The display panel according to claim 11 , wherein:

the fifth preset distance is greater than or equal to the first preset distance.

13. The display panel according to claim 1 , wherein:

two same-color light-emitting units corresponding to two first overlapping portions arranged according to the first symmetry rule are two adjacent same-color light-emitting units along the first direction.

14. The display panel according to claim 1 , wherein:

a number n of other light-emitting units is between two same-color light-emitting units corresponding to two first overlapping portions arranged according to the first symmetry rule, and n is a positive integer.

15. The display panel according to claim 14 , wherein n≤3.

16. The display panel according to claim 1 , wherein:

the first preset distance is less than or equal to 200 μm.

17. The display panel according to claim 1 , wherein:

the display panel at least includes red light-emitting units, green light-emitting units, and blue light-emitting units; and

along the first direction, within the first distance, at least two first overlapping portions corresponding to two red light-emitting units are arranged according to the first symmetry rule.

18. The display panel according to claim 1 , wherein:

the display panel at least includes red light-emitting units, green light-emitting units, and blue light-emitting units; and

along the first direction, within the first distance, at least two first overlapping portions corresponding to two blue light-emitting units are arranged according to the first symmetry rule.

19. The display panel according to claim 1 , wherein:

the first direction is a row arrangement direction of the plurality of light-emitting units in the display panel.

20. A display device, comprising:

a display panel, comprising:

a base substrate;

an array layer, on a side of the base substrate;

a plurality of light-emitting units, on a side of the array layer away from the base substrate, wherein a light-emitting unit of the plurality of light-emitting units includes a first electrode, a light-emitting layer, and a second electrode which are sequentially disposed away from the base substrate;

a pixel defining layer, on the side of the array layer away from the base substrate, wherein the pixel defining layer includes a plurality of pixel openings, the plurality of pixel openings corresponds to the plurality of light-emitting units, and a projection of the light-emitting layer on the pixel defining layer is within a pixel opening; and

a first metal part, between the array layer and the first electrode, wherein:

the first metal part is electrically connected to the first electrode through a first via;

along a direction perpendicular to the base substrate, an overlapping portion of the first metal part and the pixel opening is a first overlapping portion; along a first direction, within a first preset distance, at least two first overlapping portions corresponding to same-color light-emitting units are arranged according to a first symmetry rule; and the first direction is in parallel with the base substrate,

wherein the first preset distance is a width occupied by a number of consecutive adjacent rows of light-emitting units along the first direction; and

the first symmetry rule is an axial symmetry according to a first symmetry axis;

and the first symmetry axis is a symmetry axis of two same-color light-emitting units corresponding to two first overlapping portions symmetrically arranged along the first direction; or

the first symmetry rule is a central symmetry according to a first symmetry center;

and the first symmetry center is a symmetry center of two same-color light-emitting units corresponding to two first overlapping portions symmetrically arranged along the first direction.