Backlight panels

1 . A backlight panel, comprising:

a substrate comprising a first light-emitting area and a second light-emitting area, wherein the first light-emitting area overlaps a center of the backlight panel, the second light-emitting area is located on a side of the first light-emitting area, a boundary of the second light-emitting area close to the first light-emitting area coincides with a boundary of the first light-emitting area to form a first coincident boundary, and a boundary of the second light-emitting area away from the first light-emitting area coincides with a boundary of the backlight panel to form a second coincident boundary;

a plurality of first light-emitting devices arranged, in rows and in columns, in the first light-emitting area; and

a plurality of second light-emitting devices arranged, in rows and in columns, in the second light-emitting area,

wherein the first light-emitting devices and the second light-emitting devices have the same row direction and column direction;

in the row direction, each of the second light-emitting devices has a distance from another adjacent one of the second light-emitting devices; and

the distance between at least one of the second light-emitting devices closest to the second coincident boundary and another adjacent one of the second light-emitting devices in the row direction is less than a distance between any two adjacent ones of the first light-emitting devices in the row direction; and

wherein the second light-emitting area comprises a gradient subarea and a non-gradient subarea arranged along the column direction;

in the gradient subarea, the distance between each of the second light-emitting devices closest to the second coincident boundary and another adjacent one of the second light-emitting devices in the row direction is less than the distance between any two adjacent ones of the first light-emitting devices in the row direction, and the distance between two adjacent ones of the second light-emitting devices in the row direction increases along a direction from the second coincident boundary to the first light-emitting area; and

in the non-gradient subarea, the distance between two adjacent ones of the second light-emitting devices in the row direction is constant.

2 . The backlight panel according to claim 1 , wherein the distance between two adjacent ones of the second light-emitting devices in the row direction increases along a direction from the second coincident boundary to the first light-emitting area.

3 . The backlight panel according to claim 2 , wherein the distance between two adjacent ones of the second light-emitting devices in the row direction is less than the distance between any two adjacent ones of the first light-emitting devices in the row direction.

4 . The backlight panel according to claim 1 , wherein the second coincident boundary intersects the row direction.

5 . The backlight panel according to claim 4 wherein the second coincident boundary is an irregular boundary.

6 . The backlight panel according to claim 5 , wherein an extending direction of the irregular boundary intersects the row direction non-perpendicularly.

7 . The backlight panel according to claim 5 , wherein the irregular boundary comprises an arc boundary.

8 . The backlight panel according to claim 5 , wherein the irregular boundary comprises a circular arc boundary.

9 . The backlight panel according to claim 5 , wherein the irregular boundary comprises a first oblique boundary and a second oblique boundary connected to the first oblique boundary, and the first oblique boundary intersects the second oblique boundary non-perpendicularly.

10 . The backlight panel according to claim 1 , wherein the distance between any two adjacent ones of the first light-emitting devices in the row direction is constant, and in the non-gradient subarea, the distance between two adjacent ones of the second light-emitting devices in the row direction is equal to the distance between any two adjacent ones of the first light-emitting devices in the row direction.

11 . The backlight panel according to claim 1 , wherein the second coincident boundary is an irregular boundary, and the irregular boundary comprises a first oblique boundary and a second oblique boundary connected to the first oblique boundary, the gradient subarea is correspondingly defined at a connecting portion of the first oblique boundary and the second oblique boundary, and the gradient subarea comprises a part of the first oblique boundary and a part of the second oblique boundary.

12 . The backlight panel according to claim 1 , wherein each of the first light emitting devices and the second light emitting devices is a micro-LED or a mini-LED.

13 . The backlight panel according to claim 1 , wherein the second light-emitting area comprises two sub-areas respectively located on opposite sides of the first light-emitting area in the row direction, and the second coincident boundary comprises two sub-coincident boundaries, and each of the two sub-areas comprises a boundary away from the first light-emitting area coinciding with the boundary of the backlight panel to form a corresponding one of the two sub-coincident boundaries.

14 . The backlight panel according to claim 13 , wherein the second light-emitting devices located in the two sub-areas are symmetrically arranged relative to a central axis of the first light-emitting area parallel to the column direction.

15 . The backlight panel according to claim 13 , wherein in each of the two sub-areas, the distance between two adjacent ones of the second light-emitting devices in the row direction increases along a direction from a corresponding one of the two sub-coincident boundaries to the first light-emitting area.

16 . The backlight panel according to claim 15 , wherein the distance between two adjacent ones of the second light-emitting devices in the row direction is less than the distance between any two adjacent ones of the first light-emitting devices in the row direction.

17 . A backlight panel, comprising:

a substrate comprising a first light-emitting area and a second light-emitting area, wherein the first light-emitting area overlaps a center of the backlight panel, the second light-emitting area is located on a side of the first light-emitting area, a boundary of the second light-emitting area close to the first light-emitting area coincides with a boundary of the first light-emitting area to form a first coincident boundary, and a boundary of the second light-emitting area away from the first light-emitting area coincides with a boundary of the backlight panel to form a second coincident boundary;

a plurality of first light-emitting devices arranged, in rows and in columns, in the first light-emitting area; and

a plurality of second light-emitting devices arranged, in rows and in columns, in the second light-emitting area,

wherein the first light-emitting devices and the second light-emitting devices have the same row direction and column direction;

in the row direction, each of the second light-emitting devices has a distance from another adjacent one of the second light-emitting devices; and

the distance between at least one of the second light-emitting devices closest to the second coincident boundary and another adjacent one of the second light-emitting devices in the row direction is less than a distance between any two adjacent ones of the first light-emitting devices in the row direction;

wherein the second light-emitting area comprises two sub-areas respectively located on opposite sides of the first light-emitting area in the row direction, and the second coincident boundary comprises two sub-coincident boundaries, and each of the two sub-areas comprises a boundary away from the first light-emitting area coinciding with the boundary of the backlight panel to form a corresponding one of the two sub-coincident boundaries; and

wherein each of the two sub-areas comprises a gradient subarea and a non-gradient subarea arranged along the column direction;

in the gradient subarea, the distance between each of the second light-emitting devices closest to the second coincident boundary and another adjacent one of the second light-emitting devices in the row direction is less than the distance between any two adjacent ones of the first light-emitting devices in the row direction, and the distance between two adjacent ones of the second light-emitting devices in the row direction increases along a direction from a corresponding one of the two sub-coincident boundaries to the first light-emitting area; and

in the non-gradient subarea, the distance between two adjacent ones of the second light-emitting devices in the row direction is constant.

18 . The backlight panel according to claim 17 , wherein the distance between any two adjacent ones of the first light-emitting devices in the row direction is constant, and in the non-gradient subarea, the distance between two adjacent ones of the second light-emitting devices in the row direction is equal to the distance between any two adjacent ones of the first light-emitting devices in the row direction.

19 . The backlight panel according to claim 17 , wherein the second coincident boundary is an irregular boundary, and the irregular boundary comprises a first oblique boundary and a second oblique boundary connected to the first oblique boundary, the gradient subarea is correspondingly defined at a connecting portion of the first oblique boundary and the second oblique boundary, and the gradient subarea comprises a part of the first oblique boundary and a part of the second oblique boundary.

20 . The backlight panel according to claim 17 , wherein the second light-emitting devices located in the two sub-areas are symmetrically arranged relative to a central axis of the first light-emitting area parallel to the column direction.