Display panel, manufacturing method and electronic device

Patent metadata

Field	Value
Publication number	US-12593602-B2
Application number	US-202117620718-A
Country	US
Kind code	B2
Filing date	Dec 10, 2021
Priority date	Nov 25, 2021
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

The present application provides a display panel, a manufacturing method, and an electronic device. The electronic device comprises the display panel. The display panel comprises a light-emitting device layer, an encapsulation layer and a barrier film. First scattering particles are distributed in the encapsulation layer, and the light scattering effect of the first scattering particles on the light-emitting device layer can be employed to improve the viewing angle of the display panel. The barrier film comprises at least two antireflective layers with different refractive indexes to increase the transmittance of the barrier film, thereby improving the light extraction efficiency of the display panel.

First claim

What is claimed is:

1 . A display panel, comprising:
a light-emitting device layer; an encapsulation layer being arranged on a light-emitting side of the light-emitting device layer and covering the light-emitting device layer; a barrier film arranged on a side of the encapsulation layer away from the light-emitting device layer; and an adhesive layer arranged between the encapsulation layer and the barrier film; wherein first scattering particles are distributed in the encapsulation layer, and the barrier film comprises at least two antireflective layers with different refractive indexes, wherein the antireflective layers comprise a first antireflective layer, a second antireflective layer, and a barrier layer, the first antireflective layer arranged on the side of the encapsulation layer away from the light-emitting device layer, the second antireflective layer arranged on a side of first antireflective layer away from the encapsulation layer, the barrier layer arranged between the first antireflective layer and the second antireflective layer, the barrier layer being a water barrier film layer, and wherein a refractive index of the barrier layer is less than a refractive index of the first antireflective layer, and is greater than a refractive index of the second antireflective layer; wherein a refractive index of the adhesive layer is less than the refractive index of the first antireflective layer; wherein second scattering particles are distributed in the adhesive layer, and a refractive index of the second scattering particles is greater than the refractive index of the adhesive layer; wherein the encapsulation layer is formed by a plurality of inorganic encapsulation layers and a plurality of organic encapsulation layers so that each of the organic encapsulation layers is arranged between two adjacent ones of the plurality of inorganic encapsulation layers, wherein the first scattering particles is uniformly distributed in at least one of the plurality of organic encapsulation layers.

2 . The display panel according to claim 1 , wherein the encapsulation layer comprises:
a first inorganic encapsulation layer arranged on the light-emitting side of the light-emitting device layer; an organic encapsulation layer arranged on a side of the first inorganic encapsulation layer away from the light-emitting device layer; and a second inorganic encapsulation layer being arranged at a side of the first inorganic encapsulation layer and covering the organic encapsulation layer; wherein the first scattering particles are distributed in the organic encapsulation layer.

3 . The display panel according to claim 2 , wherein a refractive index of the first scattering particles is greater than a refractive index of the organic encapsulation layer.

4 . The display panel according to claim 1 , wherein the refractive index of the first antireflective layer is greater than or equal to 1.8, and the refractive index of the second antireflective layer is greater than or equal to 1.3, and less than or equal to 1.6.

5 . The display panel according to claim 1 , wherein the barrier film further comprises a protective layer arranged on a surface of the second antireflective layer away from the barrier layer, wherein the protective layer is made of one or more of PET, COP and PMMA.

6 . The display panel according to claim 1 , wherein a refractive index of each of the organic encapsulation layers is greater than or equal to 1.45 and less than or equal to 1.55.

7 . The display panel according to claim 1 , wherein a refractive index of the first scattering particles is greater than or equal to 1.8 and less than or equal to 2.

8 . The display panel according to claim 1 , wherein the first antireflective layer is made of organosiloxane.

9 . The display panel according to claim 1 , wherein the second antireflective layer is made of polyacrylic resin.

10 . The display panel according to claim 1 , wherein a refractive index of the adhesive layer is greater than or equal to 1.45 and less than or equal to 1.5.

11 . The display panel according to claim 1 , wherein the first scattering particles are made of MgO.

12 . An electronic device, comprising a display panel, wherein the display panel comprises:
a light-emitting device layer; an encapsulation layer being arranged on a light-emitting side of the light-emitting device layer and covering the light-emitting device layer; a barrier film arranged on a side of the encapsulation layer away from the light-emitting device layer; and an adhesive layer arranged between the encapsulation layer and the barrier film; wherein first scattering particles are distributed in the encapsulation layer, and the barrier film comprises at least two antireflective layers with different refractive indexes, wherein the antireflective layers comprise a first antireflective layer, a second antireflective layer, and a barrier layer, the first antireflective layer arranged on the side of the encapsulation layer away from the light-emitting device layer, the second antireflective layer arranged on a side of first antireflective layer away from the encapsulation layer, the barrier layer arranged between the first antireflective layer and the second antireflective layer, the barrier layer being a water barrier film layer, and wherein a refractive index of the barrier layer is less than a refractive index of the first antireflective layer, and is greater than a refractive index of the second antireflective layer; wherein a refractive index of the adhesive layer is less than the refractive index of the first antireflective layer; wherein second scattering particles are distributed in the adhesive layer, and a refractive index of the second scattering particles is greater than the refractive index of the adhesive layer; wherein the encapsulation layer is formed by a plurality of inorganic encapsulation layers and a plurality of organic encapsulation layers so that each of the organic encapsulation layers is arranged between two adjacent ones of the plurality of inorganic encapsulation layers, wherein the first scattering particles is uniformly distributed in at least one of the plurality of organic encapsulation layers.

13 . The display panel according to claim 12 , wherein the encapsulation layer comprises:
a first inorganic encapsulation layer arranged on the light-emitting side of the light-emitting device layer; an organic encapsulation layer arranged on a side of the first inorganic encapsulation layer away from the light-emitting device layer; and a second inorganic encapsulation layer being arranged at a side of the first inorganic encapsulation layer and covering the organic encapsulation layer; wherein the first scattering particles are distributed in the organic encapsulation layer.

14 . The display panel according to claim 13 , wherein a refractive index of the first scattering particles is greater than a refractive index of the organic encapsulation layer.

15 . The display panel according to claim 12 , wherein the refractive index of the first antireflective layer is greater than or equal to 1.8, and the refractive index of the second antireflective layer is greater than or equal to 1.3, and less than or equal to 1.6.

16 . A manufacturing method of a display panel, wherein the manufacturing method of the display panel comprises:
forming a light-emitting device layer; forming an encapsulation layer on a light-emitting side of the light-emitting device layer and covering the light-emitting device layer; forming a barrier film on a side of the

Assignees

• Shenzhen China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Cao Weiran
• Li Jinchuan
• Yin Qingwu

Classifications

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K2102/331

  Nanoparticles used in non-emissive layers, e.g. in packaging layer · CPC title

• 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

• H10K59/877 Primary

  comprising scattering means · CPC title