Display panel with beam diffusion layer and manufacturing method thereof, and display device

Patent metadata

Field	Value
Publication number	US-10910602-B2
Application number	US-201815986867-A
Country	US
Kind code	B2
Filing date	May 23, 2018
Priority date	Jan 3, 2018
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A display panel and manufacturing method thereof and a display device are provided. The display panel includes: a base substrate, a light-emitting layer located on the base substrate, and a beam diffusion layer located on the side of a light-emergent surface of the light-emitting layer. The light-emitting layer includes a plurality of pixel units arranged in an array; and the beam diffusion layer includes a beam diffusion element corresponding to at least one of the pixel units, which is used to expand a light-emergent beam of the corresponding pixel unit. The beam diffusion element may expand the light-emergent beam of the corresponding pixel unit, which increases the area of the light-emergent surface of the pixel unit. Thus, the number of pixel units provided in a large-sized display panel may be reduced, the power consumption thereof may be decreased, and the occurrence of burn-in inside the display panel may be avoided.

First claim

What is claimed is:

1. A display panel, comprising a base substrate, a light-emitting layer located on the base substrate, and a beam diffusion layer located on the side of a light-emergent surface of the light-emitting layer; wherein
the light-emitting layer comprises a plurality of pixel units arranged in an array;
the beam diffusion layer comprises a beam diffusion element corresponding to at least one of the pixel units, and the beam diffusion element is used to expand a light-emergent beam of the corresponding pixel unit,
wherein each of the pixel units comprises a plurality of light-emitting units of different colors,
wherein the display panel further comprises a wiring layer, the wiring layer comprises a plurality of driving units which are in one-to-one correspondence with the light-emitting units; and each of the driving units is connected to the corresponding light-emitting unit for driving the corresponding light-emitting unit to emit light, and
wherein, the wiring layer is located between the light-emitting layer and the beam diffusion layer; or, a portion of the wiring layer is located between the light-emitting layer and the base substrate, and another portion thereof is located between the light-emitting layer and the beam diffusion layer.

2. The display panel according to claim 1 , wherein
each of the pixel units at least comprises light-emitting units of three different colors of red, green and blue.

3. The display panel according to claim 1 , wherein
in at least one of the pixel units, each of the light-emitting units in each of the pixel units corresponds to one beam diffusion element.

4. The display panel according to claim 1 , wherein
in at least one of the pixel units, each of the pixel units corresponds to one beam diffusion element.

5. The display panel according to claim 1 , wherein the beam diffusion element comprises a first convex lens located on the side of a light-emergent surface of the corresponding pixel unit, and a second convex lens located on the side of a light-emergent surface of the first convex lens.

6. The display panel according to claim 5 , wherein
an object focal point of the second convex lens is set at an image focal point of the first convex lens.

7. The display panel according to claim 1 , wherein
the beam diffusion element comprises a concave lens located on the side of a light-emergent surface of the corresponding pixel unit, and a third convex lens located on the side of a light-emergent surface of the concave lens.

8. The display panel according to claim 7 , wherein
an object focal point of the third convex lens is set at an image focal point of the concave lens.

9. The display panel according to claim 3 , wherein the beam diffusion element comprises a color filter material having the same color as the corresponding light-emitting unit.

10. The display panel according to claim 9 , wherein the color filter material comprises propylene glycol methyl ether acetate, ethyl ethoxy propionate, polyethylene glycol monomethyl ether, and pigments and additives having the same color as the corresponding light-emitting unit.

11. The display panel according to claim 1 , further comprising an encapsulation layer located on the side of a light-emergent surface of the beam diffusion layer;
the encapsulation layer is used to encapsulate the light-emitting layer and the beam diffusion layer.

12. The display panel according to claim 11 , further comprising a circular polarizing layer located on the side of a light-emergent surface of the encapsulation layer.

13. A method of manufacturing a display panel, comprising:
forming a light-emitting layer on a base substrate; the light-emitting layer comprises a plurality of pixel units arranged in an array;
forming a beam diffusion layer on the side of a light-emergent surface of the light-emitting layer; the beam diffusion layer comprises a beam diffusion element corresponding to at least one of the pixel units, and the beam diffusion element is used to expand a light-emergent beam of the corresponding pixel unit,
wherein each of the pixel units comprises a plurality of light-emitting units of different colors,
wherein the display panel further comprises a wiring layer comprising a plurality of driving units which are in one-to-one correspondence with the light-emitting units; and each of the driving units is connected to the corresponding light-emitting unit for driving the corresponding light-emitting unit to emit light, and
wherein, the wiring layer is located between the light-emitting layer and the beam diffusion layer; or, a portion of the wiring layer is located between the light-emitting layer and the base substrate, and another portion thereof is located between the light-emitting layer and the beam diffusion layer.

14. A display device, comprising a display panel;
the display panel comprises a base substrate, a light-emitting layer located on the base substrate, and a beam diffusion layer located on the side of a light-emergent surface of the light-emitting layer; wherein
the light-emitting layer comprises a plurality of pixel units arranged in an array;
the beam diffusion layer comprises a beam diffusion element corresponding to at least one of the pixel units, and the beam diffusion element is used to expand a light-emergent beam of the corresponding pixel unit,
wherein each of the pixel units comprises a plurality of light-emitting units of different colors,
wherein the display panel further comprises a wiring layer comprising a plurality of driving units which are in one-to-one correspondence with the light-emitting units; and each of the driving units is connected to the corresponding light-emitting unit for driving the corresponding light-emitting unit to emit light, and
wherein, the wiring layer is located between the light-emitting layer and the beam diffusion layer; or, a portion of the wiring layer is located between the light-emitting layer and the base substrate, and another portion thereof is located between the light-emitting layer and the beam diffusion layer.

15. The display device according to claim 14 , wherein
in at least one of the pixel units, each of the light-emitting units in each of the pixel units corresponds to one beam diffusion element.

16. The display device according to claim 14 , wherein
in at least one of the pixel units, each of the pixel units corresponds to one beam diffusion element.

17. The display device according to claim 14 , wherein the beam diffusion element comprises a first convex lens located on the side of a light-emergent surface of the corresponding pixel unit, and a second convex lens located on the side of a light-emergent surface of the first convex lens.

18. The display device according to claim 17 , wherein
an object focal point of the second convex lens is set at an image focal point of the first convex lens.

19. The display device according to claim 14 , wherein
the beam diffusion element comprises a concave lens located on the side of a light-emergent surface of the corresponding pixel unit, and a third convex lens located on the side of a light-emergent surface of the concave lens.

20. The display device according to claim 14 , wherein the display panel comprises an encapsulation layer located on the side of a light-emergent surface of the beam diffusion layer;
the encapsulation layer is used to encapsulate the light-emitting layer and the beam diffusion layer.

Assignees

• Boe Technology Group Co Ltd
• Fuzhou Boe Optoelectronics Tech Co Ltd

Inventors

• Pan Wanping
• Cheng Li
• Jin Xianjuan

Classifications

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K50/858

  comprising refractive means, e.g. lenses · CPC title