Display substrate and method of manufacturing the same, and display device
A display substrate includes a base, a plurality of light-emitting devices disposed on a side of the base, and a light adjustment layer. The plurality of light-emitting devices are spaced apart from each other. At least part of the light adjustment layer is located in gaps among the plurality of light-emitting devices, so that side walls of at least one of the plurality of light-emitting devices are surrounded by the light adjustment layer. A material of the light adjustment layer includes a light-absorbing material. The light adjustment layer is configured to absorb light incident on the light adjustment layer.
1. A display substrate, comprising:
a base;
a plurality of light-emitting devices disposed on a side of the base, the plurality of light-emitting devices being spaced apart from each other; and
a light adjustment layer, at least part of the light adjustment layer being located in gaps among the plurality of light-emitting devices, so that side walls of at least one of the plurality of light-emitting devices are surrounded by the light adjustment layer, a material of the light adjustment layer including a light-absorbing material, and the light adjustment layer being configured to absorb light incident on the light adjustment layer.
2. The display substrate according to claim 1 , wherein a thickness of a portion of the light adjustment layer located in the gaps among the plurality of light-emitting devices is 0.5 to 1.5 times a thickness of the plurality of light-emitting devices.
3. The display substrate according to claim 1 , wherein the material of the light adjustment layer includes at least one of a black ink, a black glue, or a black photoresist material.
4. The display substrate according to claim 1 , wherein an absorption coefficient of the material of the light adjustment layer is 2×10 −5 m −1 to 0.8 m −1 .
5. The display substrate according to claim 1 , wherein a surface of the light adjustment layer away from the base is flush with surfaces of the plurality of light-emitting devices away from the base, or, is higher than the surfaces of the plurality of light-emitting devices away from the base relative to the base in a thickness direction of the base.
6. The display substrate according to claim 5 , wherein relative to the base, the surface of the light adjustment layer away from the base is 0 μm to 50 μm higher than the surfaces of the plurality of light-emitting devices away from the base in the thickness direction of the base.
7. The display substrate according to claim 1 , wherein the light adjustment layer includes:
a first sub-light adjustment layer located in the gaps among the plurality of light-emitting devices, a surface of the first sub-light adjustment layer away from the base being flush with surfaces of the plurality of light-emitting devices away from the base, or being higher or lower than the surfaces of the plurality of light-emitting devices away from the base relative to the base, a material of the first sub-light adjustment layer including a reflective material, and the first sub-light adjustment layer being configured to reflect light incident from the light-emitting devices to the first sub-light adjustment layer back into the light-emitting devices; and
a second sub-light adjustment layer disposed on a side of the first sub-light adjustment layer away from the base, a surface of the second sub-light adjustment layer away from the base being flush with the surfaces of the plurality of light-emitting devices away from the base, or being higher than the surfaces of the plurality of light-emitting devices away from the base relative to the base, a material of the second sub-light adjustment layer including the light-absorbing material, and the second sub-light adjustment layer being configured to absorb light incident on the second sub-light adjustment layer.
8. The display substrate according to claim 7 , wherein a reflectivity of the reflective material in the first sub-light adjustment layer is 85% to 95%.
9. The display substrate according to claim 7 , wherein the material of the first sub-light adjustment layer includes at least one of a white ink, a white glue, or a metal material.
10. The display substrate according to claim 7 , wherein in a thickness direction of the base, a difference between a distance from the surface of the first sub-light adjustment layer away from the base to the base, and a distance from the surfaces of the plurality of light-emitting devices away from the base to the base is −15 μm to 15 μm.
11. The display substrate according to claim 7 , wherein a thickness of the second sub-light adjustment layer is 10 μm to 15 μm.
12. The display substrate according to claim 7 , wherein an orthogonal projection of the second sub-light adjustment layer on the base is non-overlapping with orthogonal projections of the plurality of light-emitting devices on the base; or
the orthogonal projections of the plurality of light-emitting devices on the base are located within the orthogonal projection of the second sub-light adjustment layer on the base.
13. The display substrate according to claim 1 , further comprising a light reflecting layer that covers side walls of each of the plurality of light-emitting devices.
14. A method of manufacturing a display substrate, the method comprising:
providing a base;
providing a plurality of light-emitting devices spaced apart from each other on a side of the base; and
forming a light adjustment layer on the base provided with the plurality of light-emitting devices, at least part of the light adjustment layer being located in gaps among the plurality of light-emitting devices, so that side walls of at least one of the plurality of light-emitting devices are surrounded by the light adjustment layer, a material of the light adjustment layer including a light-absorbing material, and the light adjustment layer being configured to absorb light incident on the light adjustment layer.
15. The method of manufacturing the display substrate according to claim 14 , wherein forming the light adjustment layer on the base provided with the plurality of light-emitting devices, includes:
forming a first sub-light adjustment layer in the gaps among the plurality of light-emitting devices, a surface of the first sub-light adjustment layer away from the base being flush with surfaces of the plurality of light-emitting devices away from the base, or being higher or lower than the surfaces of the plurality of light-emitting devices away from the base relative to the base, and a material of the first sub-light adjustment layer including a reflective material; and
forming a second sub-light adjustment layer on a side of the first sub-light adjustment layer away from the base, a surface of the second sub-light adjustment layer away from the base being flush with the surfaces of the plurality of light-emitting devices away from the base, or being higher than the surfaces of the plurality of light-emitting devices away from the base relative to the base, and a material of the second sub-light adjustment layer including the light-absorbing material.
16. The method of manufacturing the display substrate according to claim 15 , wherein
the first sub-light adjustment layer is formed by any one of a glue dispensing process, a glue spraying process, and a 3D printing process; and
the second sub-light adjustment layer is formed by any one of a glue dispensing process, a glue spraying process, a line coating process, a 3D printing process, a photolithography process, and an injection molding process.
17. The method of manufacturing the display substrate according to claim 14 , wherein forming the light adjustment layer on the base provided with the plurality of light-emitting devices, includes:
forming a light adjustment film in the gaps among the plurality of light-emitting devices and on a side of the plurality of light-emitting devices away from the base, a surface of the light adjustment film away from the base being higher than surfaces of the plurality of light-emitting devices away from the base relative to the base, and the light adjustment film including the light-absorbing material; and
polishing the light adjustment film to reduce a thickness of the light adjustment film, so as to form the light adjustment layer.
18. A display device, comprising the display substrate according to claim 1 .
19. The display substrate according to claim 1 , wherein a surface of the light adjustment layer away from the base is lower than the surfaces of the plurality of light-emitting devices away from the base relative to the base in a thickness direction of the base.
20. The display substrate according to claim 19 , wherein relative to the base, in the thickness direction of the base, a difference between a distance from the surfaces of the plurality of light-emitting devices away from the base to the base, and a distance from the surface of the light adjustment layer away from the base to the base is greater than 0 μm and less than or equal to 15 μm.