Display panel and method for manufacturing same, and display device

Patent metadata

Field	Value
Publication number	US-2021124109-A1
Application number	US-201916640809-A
Country	US
Kind code	A1
Filing date	Jun 28, 2019
Priority date	Jun 29, 2018
Publication date	Apr 29, 2021
Grant date	—

Abstract

Provided is a display panel including a diffusion particle layer as well as a color filtering layer and a liquid crystal layer which are stacked on the diffusion particle layer. The diffusion particle layer includes a transparent medium layer and photosensitive polymeric monomers doped in the transparent medium layer, and a side surface of the transparent medium layer is a light incident surface. The photosensitive polymeric monomers are subjected to a polymerization reaction under an action of light incident from the light incident surface into the transparent medium layer, and the photosensitive polymeric monomers subjected to the polymerization reaction are configured to scatter the light.

First claim

What is claimed is:

1 . A display panel, comprising:
a diffusion particle layer, a color filtering layer and a liquid crystal layer, the color filtering layer and the liquid crystal layer are stacked on the diffusion particle layer, wherein the diffusion particle layer comprises a transparent medium layer and photosensitive polymeric monomers doped in the transparent medium layer; at least one side surface other than two largest surfaces of the transparent medium layer is a light incident surface; and the photosensitive polymeric monomers are subjected to a polymerization reaction under an action of light incident from the light incident surface into the transparent medium layer, and the photosensitive polymeric monomers subjected to the polymerization reaction are configured to scatter the light.

2 . The display panel of claim 1 , wherein a material of the photosensitive polymeric monomers comprises any one selected from a group consisting of a salicylate material, a benzophenone material, a benzotriazole material, a substituted-acrylonitrile material, a triazine material, and a hindered-amine material.

3 . The display panel of claim 1 , wherein a density of the photosensitive polymeric monomers at any position of the diffusion particle layer is positively correlated with a distance between the position and the light incident surface.

4 . The display panel of claim 1 , wherein the display panel has a plurality of sub-pixel regions arranged in an array; the color filtering layer comprises a plurality of color filtering blocks located within the plurality of sub-pixel regions with a one-to-one correspondence; each of the color filtering blocks has a groove; and the liquid crystal layer comprises liquid crystal located in the groove.

5 . The display panel of claim 4 , wherein any two adjacent color filtering blocks are abutted against each other.

6 . The display panel of claim 1 , wherein the color filtering layer is located between the diffusion particle layer and the liquid crystal layer;
or, the color filtering layer is located on a surface of the liquid crystal layer away from the diffusion particle layer.

7 . The display panel of claim 1 , wherein a material of the color filtering layer comprises resin.

8 . The display panel of claim 1 , comprising two polarizers, wherein the liquid crystal layer and the diffusion particle layer are located between the two polarizers.

9 . The display panel of claim 8 , wherein the display panel is a normally-transparent display panel.

10 . The display panel of claim 1 , wherein a material of the transparent medium layer comprises polymethyl methacrylate or polyimide.

11 . The display panel of claim 1 , wherein a material of the photosensitive polymeric monomers comprises any one selected from a group consisting of a salicylate material, a benzophenone material, a benzotriazole material, a substituted-acrylonitrile material, a triazine material, and a hindered-amine material;
a density of the photosensitive polymeric monomers at any position of the diffusion particle layer is positively correlated with a distance between the position and the light incident surface; the display panel has a plurality of sub-pixel regions arranged in an array, the color filtering layer comprises a plurality of color filtering blocks located within the plurality of sub-pixel regions with a one-to-one correspondence, each of the color filtering blocks has a groove, and the liquid crystal layer comprises liquid crystal located in the groove; any two adjacent color filtering blocks are abutted against each other; the color filtering layer is located between the diffusion particle layer and the liquid crystal layer, or, the color filtering layer is located on a surface of the liquid crystal layer away from the diffusion particle layer; a material of the color filtering layer comprises resin; the display panel comprises two polarizers, and the liquid crystal layer and the diffusion particle layer are located between the two polarizers; the display panel is a normally-transparent display panel; and a material of the transparent medium layer comprises polymethyl methacrylate or polyimide.

12 . A display device, comprising a display panel and a light source, the display panel comprising a diffusion particle layer as well as a color filtering layer and a liquid crystal layer which are stacked on the diffusion particle layer, wherein
the diffusion particle layer comprises a transparent medium layer and photosensitive polymeric monomers doped in the transparent medium layer; at least one side surface other than two largest surfaces of the transparent medium layer is a light incident surface; and the photosensitive polymeric monomers are subjected to a polymerization reaction under an action of light incident from the light incident surface into the transparent medium layer, and the photosensitive polymeric monomers subjected to the polymerization reaction are configured to scatter the light, and the light source is located at the light incident surface.

13 . The display device of claim 12 , wherein the light source comprises a plurality of light-emitting diodes; and each of the light-emitting diodes comprises a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.

14 . A method for manufacturing a display panel, comprising:
providing a diffusion particle layer, wherein the diffusion particle layer comprises a transparent medium layer and photosensitive polymeric monomers doped in the transparent medium layer, and a side surface other than two largest surfaces of the transparent medium layer is a light incident surface; and stacking a color filtering layer and a liquid crystal layer on the diffusion particle layer, wherein the photosensitive polymeric monomers are subjected to a polymerization reaction under an action of light incident from the light incident surface into the transparent medium layer, and the photosensitive polymeric monomers subjected to the polymerization reaction are configured to scatter the light.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Xin
• Du Jianhua

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/133504 Primary

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title

• G02B6/0041 Primary

  provided in the bulk of the light guide · CPC title

• G02B6/0051

  Diffusing sheet or layer · CPC title

• G02F1/133615 Primary

  Edge-illuminating devices, i.e. illuminating from the side · CPC title