Backlight assembly and display device

Patent metadata

Field	Value
Publication number	US-11487140-B2
Application number	US-202117209534-A
Country	US
Kind code	B2
Filing date	Mar 23, 2021
Priority date	Mar 24, 2020
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

A backlight assembly and a display device including the backlight assembly are provided. The backlight assembly includes a light source unit, a peep-proof layer on a light emitting side of the light source unit, a light adjustment layer on a side of the peep-proof layer distal to the light source unit, and a plurality of first microstructures between the peep-proof layer and the light adjustment layer and spaced apart from each other.

First claim

What is claimed is:

1. A backlight assembly, comprising:
a light source unit;
a peep-proof layer on a light emitting side of the light source unit;
a light adjustment layer on a side of the peep-proof layer distal to the light source unit; and
a plurality of first microstructures between the peep-proof layer and the light adjustment layer and spaced apart from each other,
wherein the plurality of first microstructures comprises a plurality of microlenses, and
wherein the plurality of microlenses have a same diameter and are uniformly distributed in an array.

2. The backlight assembly according to claim 1 , wherein the plurality of first microstructures are integrally formed with the light adjustment layer or with the peep-proof layer.

3. The backlight assembly according to claim 1 , wherein the light adjustment layer comprises polymer dispersed liquid crystal.

4. The backlight assembly according to claim 1 , wherein a diameter of each of the plurality of transparent particles or a diameter of each of the plurality of microlenses is in a range of 50 μm to 100 μm.

5. The backlight assembly according to claim 1 , wherein an interval between any adjacent two of the plurality of microlenses is greater than a radius of any one of the plurality of microlenses.

6. The backlight assembly according to claim 2 , wherein the plurality of first microstructures are on a surface of the light adjustment layer proximal to the peep-proof layer, or on a surface of the peep-proof layer proximal to the light adjustment layer.

7. The backlight assembly according to claim 6 , wherein the surface of the light adjustment layer proximal to the peep-proof layer or the surface of the peep-proof layer proximal to the light adjustment layer has a haze degree of 10% to 25%.

8. A display device, comprising:
the backlight assembly according to claim 1 ;
a display panel on the light adjustment layer; and
a first polarizer on a side of the display panel proximal to the light adjustment layer and a second polarizer on a side of the display panel distal to the light adjustment layer;
wherein the display device further comprises a preset gap between the first polarizer and the light adjustment layer.

9. The display device according to claim 8 , wherein a surface of the first polarizer proximal to the light adjustment layer is a matte surface and/or a surface of the light adjustment layer proximal to the first polarizer is a matte surface.

10. The display device according to claim 9 , wherein the surface of the first polarizer proximal to the light adjustment layer and/or the surface of the light adjustment layer proximal to the first polarizer each have a haze degree of 10% to 25%.

11. The display device according to claim 8 , further comprising a plurality of second microstructures, which are spaced apart from each other and on a side of the first polarizer proximal to the light adjustment layer and/or on a side of the light adjustment layer proximal to the first polarizer.

12. The display device according to claim 11 , wherein the plurality of second microstructures comprises a plurality of transparent particles or a plurality of microlenses.

13. The display device according to claim 11 , wherein the plurality of second microstructures are integrally formed with the light adjustment layer or with the first polarizer.

14. The display device according to claim 12 , wherein a diameter of each of the plurality of transparent particles or a diameter of each of the plurality of microlenses is in a range of 50 μm to 100 μm.

15. The display device according to claim 12 , wherein the plurality of microlenses have a same diameter and are uniformly distributed in an array.

16. The display device according to claim 15 , wherein an interval between any adjacent two of the plurality of microlenses is greater than a radius of any one of the plurality of microlenses.

17. The display device according to claim 13 , wherein the plurality of second microstructures are on a surface of the light adjustment layer proximal to the first polarizer or on a surface of the first polarizer proximal to the light adjustment layer.

18. The display device according to claim 8 , wherein the preset gap is 2 mm.

Assignees

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

Inventors

• Su Xuezhen
• Huang Jianming
• Zhu Heling
• Cheng Li
• Lin Yabin
• Zhu Aihua
• Jia Xiaobo
• Pan Wanping
• Yu Hailong

Classifications

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02B6/005

  provided by one optical element, or plurality thereof, placed on the light output side of the light guide · CPC title

• G02F1/133607

  the light controlling member including light directing or refracting elements, e.g. prisms or lenses · CPC title

• G02F1/137

  characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering · CPC title