Light-emitting substrate and manufacturing method thereof, backlight module, and display device

2:

• The light-emitting substrate according to claim 1, wherein the plurality of reflective included angles of the reflective layer comprise at least one of an acute angle, a rounded chamfer, and an obtuse angle.

3:

• The light-emitting substrate according to claim 1, wherein the light-emitting device has a first device side edge extending along the first direction and a second device side edge extending along a second direction, the second direction intersects with the first direction, and a first distance from the first device side edge to the reflective layer in the second direction is substantially equal to a second distance from the second device side edge to the reflective layer in the first direction.

4:

• The light-emitting substrate according to claim 3, wherein the light-emitting device has a plurality of top corners, the plurality of top corners are formed by included angles between the first device side edge and the second device side edge intersecting with each other, the plurality of reflective edges of the reflective layer comprise a first reflective edge facing the first device side edge and a second reflective edge facing the second device side edge, the plurality of reflective included angles of the reflective layer comprise a plurality of included angles formed by the first reflective edge and the second reflective edge intersecting with each other, and each of the plurality of included angles of the reflective layer comprises an acute angle or a rounded chamfer.

6:

• The light-emitting substrate according to claim 5, wherein the first edge and the second edge of the reflective layer each comprise a body part extending along the first direction and end parts located at two ends of the body part, and the third edge and the fourth edge each comprise a body part extending along the second direction and end parts located at two ends of the body part;
• and
• the first included angle to the fourth included angle of the reflective layer are respectively formed by end parts of corresponding edges of the first edge to the fourth edge intersecting with each other, and extension directions of the end parts and the body part of at least one of the first edge to the fourth edge of the reflective layer are different.

7:

• The light-emitting substrate according to claim 6, wherein the first included angle is located on a side of an extension line of the body part of the first edge in the first direction, away from a centerline of the light-emitting device, and the second included angle is located on a side of an extension line of the body part of the second edge in the first direction, away from the centerline of the light-emitting device, and the centerline of the light-emitting device extends along the first direction and passes through a center of the light-emitting device.

8:

• The light-emitting substrate according to claim 7, wherein the third included angle is located on a side of the extension line of the body part of the first edge, close to the centerline of the light-emitting device, and the fourth included angle is located on a side of the extension line of the body part of the second edge, close to the centerline of the light-emitting device;
• or
• wherein the third included angle is located on a side of the extension line, of the body part of the first edge, away from the centerline of the light-emitting device, and the fourth included angle is located on a side of the extension line, of the body part of the second edge, away from the centerline of the light-emitting device.

(canceled)

10:

• The light-emitting substrate according to claim 6, wherein the first included angle to the fourth included angle are each located on a side of extension lines, of the body parts of the first edge and the second edge in the first direction, close to a centerline of the light-emitting device, and the centerline of the light-emitting device extends along the first direction and passes through a center of the light-emitting device.

(canceled)

12:

• The light-emitting substrate according to claim 5, wherein the first edge and the second edge of the reflective layer each comprise a first sub-edge and a second sub-edge intersecting with each other, and the reflective layer is provided with a recess, recessed toward the body part of the reflective layer and away from the light-emitting device, at an intersection of the first sub-edge and the second sub-edge;
• and/or
• wherein each of the third edge and the fourth edge of the reflective layer comprises a first sub-edge and a second sub-edge intersecting with each other, and the reflective layer is provided with a recess, recessed toward the body part of the reflective layer and away from the light-emitting device, at an intersection of the first sub-edge and the second sub-edge.

13:

• The light-emitting substrate according to claim 12, wherein the intersection of the first sub-edge and the second sub-edge is aligned in the second direction with a center point of the first device side edge of the light-emitting device in the first direction;
• and/or
• wherein the intersection of the first sub-edge and the second sub-edge of each of the third edge and the fourth edge of the reflective layer is aligned in the first direction with a center point of the second device side edge of the light-emitting device in the second direction.

14-16. (canceled)

17:

• The light-emitting substrate according to claim 1, wherein a thickness of the edge part is less than a thickness of the body part.

18:

• The light-emitting substrate according to claim 17, wherein the edge part is ring-shaped and laterally surrounds the light-emitting device.

19:

• The light-emitting substrate according to claim 17, wherein the edge part is a portion of the first reflective layer close to the light-emitting device, and the edge part is spaced apart from the second reflective layer by other portions of the first reflective layer;
• or
• wherein the edge part comprises a first edge part of the first reflective layer and a second edge part of the second reflective layer, and the first edge part and the second edge part enclose to form the opening.

(canceled)

21:

• The light-emitting substrate according to claim 17, wherein the edge part comprises a first edge part of the first reflective layer and a second edge part of the second reflective layer, and the first edge part and the second edge part enclose to form the opening, and a side length of the first edge part is greater than a side length of the second edge part.

22:

• The light-emitting substrate according to claim 1, wherein a thickness of a body part of the first reflective layer is substantially equal to a thickness of a body part of the second reflective layer.

23:

• The light-emitting substrate according to claim 1, wherein the second reflective layer comprises a plurality of first reflective strips and second reflective strips arranged alternately along the first direction and extending along a second direction, one of the second reflective strips is located between adjacent first reflective strips, and overlaps with the adjacent first reflective strips in a direction perpendicular to a main surface of the base substrate.

(canceled)

25:

• The light-emitting substrate according to claim 1, further comprising an additional device arranged between adjacent light-emitting devices in the first direction, wherein in the first direction, a pitch between adjacent additional devices is an integer multiple of a pitch between the adjacent light-emitting devices;
• wherein the reflective layer further comprises an additional opening, and the additional device is disposed in the additional opening of the reflective layer and spaced apart from the reflective layer.

(canceled)

29-36. (canceled)