Light-emitting plate, method for manufacturing light-emitting plate, and display terminal

Patent metadata

Field	Value
Publication number	US-12147116-B2
Application number	US-202217780982-A
Country	US
Kind code	B2
Filing date	May 20, 2022
Priority date	Apr 22, 2022
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

The present disclosure provides a light-emitting plate and a preparation method thereof and a display terminal, wherein the light-emitting plate includes a drive substrate and light sources. The light-emitting plate further includes light reflecting structures, one of light sources is located between two adjacent light reflecting structures. Each of the light reflecting structures includes a first side surface and a second side surface facing an adjacent light source, respectively. One end of the first side surface and one end of the second side surface are connected to the drive substrate. In one of the light reflecting structures, both of the first side surface and the second side surface are concave, and the first side surface and the second side surface are recessed toward each other.

First claim

What is claimed is:

1. A light-emitting plate, comprising a drive substrate, and a plurality of light sources disposed on the drive substrate and electrically connected to a circuit in the drive substrate, wherein the light-emitting plate further comprises:
a plurality of light reflecting structures disposed on the drive substrate,
wherein one of the light sources is located between two adjacent light reflecting structures; each of the light reflecting structures comprises a first side surface facing an adjacent light source and a second side surface away from the first side surface; one end of the first side surface and one end of the second side surface are connected to the drive substrate;
in one of the light reflecting structures, both of the first side surface and the second side surface are concave, and the first side surface and the second side surface are recessed toward each other, and
a height of the light sources is equal to a height of the light reflecting structures in a direction perpendicular to the drive substrate.

2. The light-emitting plate according to claim 1 , wherein both of the first side surface and the second side surface are arc surfaces, and a center of each of the arc surfaces is located on a side of the one of light sources facing the first side surface.

3. The light-emitting plate according to claim 1 , wherein each of the first side surface and the second side surface is formed by connecting at least two planes.

4. The light-emitting plate according to claim 1 , wherein one of accommodating cavities is disposed between the two adjacent light reflecting structures, and the light sources are accommodated in the accommodating cavities; and a size of an opening of one end of each of the accommodating cavities that is away from the drive substrate is greater than or equal to a size of the light sources in a direction parallel to the drive substrate.

5. The light-emitting plate according to claim 4 , wherein one of accommodating cavities is disposed between the two adjacent light reflecting structures, and the light sources are accommodated in the accommodating cavities; and a size of an opening of one end of each of the accommodating cavities that is away from the drive substrate is greater than a size of the light sources in a direction parallel to the drive substrate.

6. The light-emitting plate according to claim 1 , wherein a material for forming the light reflecting structures comprises at least one of an ink base and a photosensitive base, and reflective particles dispersed in at least one of the ink base and the photosensitive base.

7. The light-emitting plate according to claim 6 , wherein each of the light reflecting structures comprises a plurality of light reflecting layers stacked on the drive substrate, and sizes of the light reflecting layers become smaller and then are increased in a first direction from a light reflecting layer close to the drive substrate to a light reflecting layer farthest from the drive substrate; wherein the first direction is parallel to the drive substrate and is in consistent with a recessed direction of the first side surface of each of the light reflecting structures.

8. The light-emitting plate according to claim 6 , wherein the reflective particles have a diameter of less than 10 microns.

9. A method for manufacturing a light-emitting plate, comprising the steps of:
preparing a light reflecting mixture, wherein the light reflecting mixture comprises reflective particles mixed together with at least one of a photosensitive base and an ink base;
providing a drive substrate, and patterning the light reflecting mixture formed on the drive substrate by a photolithography process or a 3D printing process to obtain a plurality of light reflecting structures, wherein a first side surface and a second side surface opposite to the first side surface in two adjacent light reflecting structures are concave; and
providing a plurality of light sources on the drive substrate, wherein one of the light sources is located between two adjacent light reflecting structures,
wherein a height of the light sources is equal to a height of the light reflecting structures in a direction perpendicular to the drive substrate.

10. The method according to claim 9 , wherein in case that the light reflecting mixture comprises the reflective particles and the photosensitive base, or comprises the reflective particles, the photosensitive base and the ink base, the photolithography process or the 3D printing process is carried out to form the light reflecting structures; and
in case that the light reflecting mixture comprises the reflective particles and the ink base, the 3D printing process is carried out to form the light reflecting structures.

11. The method according to claim 10 , wherein the photolithographic process comprises the steps of:
coating the light reflecting mixture on the drive substrate;
subjecting simultaneously one side of the light reflecting mixture facing to the drive substrate and the other side of the light reflecting mixture away from the drive substrate to a first heating;
patterning the light reflecting mixture by an exposure and development process; and
subjecting the patterned light reflecting mixture to a second heating to obtain the light reflecting structures.

12. The method according to claim 10 , wherein the 3D printing process comprises performing a 3D printing to the light reflecting mixture as a 3D printing material on the drive substrate in stages, to form a plurality of light reflecting layers stacked on the drive substrate; and sizes of the light reflecting layers become smaller and then are increased in a first direction, from a light reflecting layer close to the drive substrate to a light reflecting layer farthest from the drive substrate; wherein the first direction is parallel to the drive substrate and is in consistent with a recessed direction of the first side surface of each of the light reflecting structures.

13. A display terminal, comprising a backlight module and a display panel disposed opposite to each other, wherein the backlight module comprises a light-emitting plate located on a light incident side of the display panel, and the light-emitting plate comprises a drive substrate and a plurality of light sources disposed on the drive substrate and electrically connected to a circuit of in the drive substrate; and the light-emitting plate further comprises:
a plurality of light reflecting structures disposed on the drive substrate;
one of the light sources is located between two adjacent light reflecting structures, and each of the light reflecting structures comprises a first side surface facing an adjacent light source and a second side surface away from the first side surface;
in one of the light reflecting structures, both of the first side surface and the second side surface are concave, and the first side surface and the second side surface are recessed toward each other, and
a height of the light sources is equal to a height of the light reflecting structures in a direction perpendicular to the drive substrate.

14. The display terminal according to claim 13 , wherein both of the first side surface and the second side surface are arc surfaces, and a center of each of the arc surfaces is located on a side of the one of light sources facing the first side surface.

15. The display terminal according to claim 13 , wherein each of the first side surface and the second side surface is formed by connecting at least two planes.

16. The display terminal according to claim 13 , wherein one of accommodatin

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Sun Hejing

Classifications

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title

• G02F1/133603 Primary

  with LEDs · CPC title