Display device

Patent metadata

Field	Value
Publication number	US-12181742-B2
Application number	US-202118277980-A
Country	US
Kind code	B2
Filing date	Feb 23, 2021
Priority date	Feb 23, 2021
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A display device, including a backlight module ( 1 ). The backlight module ( 1 ) includes an optical film layer ( 2 ), the optical film layer ( 2 ) includes at least two diffusers ( 21 ) stacked in sequence, and the haze of each diffuser ( 21 ) is 80%-99%. The backlight module ( 1 ) further includes an LED light source ( 3 ), and the optical band of the LED light source ( 3 ) is greater than 455 nm. The display device further includes a cover plate ( 5 ) and at least one anti-reflection layer ( 7 ), the cover plate ( 5 ) is provided with an atomization layer ( 51 ), and the anti-reflection layer ( 7 ) is located on the side of the cover plate ( 5 ) facing away from a display panel ( 4 ).

First claim

What is claimed is:

1. A display device, comprising a backlight module;
wherein the backlight module comprises an optical film layer,
the optical film layer comprises at least two diffusers stacked in sequence, and
a haze of each of the at least two diffusers ranges from 80% to 99%;
wherein the display device further comprises a display panel and a cover plate; wherein the cover plate is located at a side, facing away from the backlight module, of the display panel;
wherein the cover plate comprises an atomization layer; wherein the atomization layer is located at a light-emitting side of the cover plate, and a haze of the atomization layer ranges from 5% to 70%; wherein the atomization layer is formed through an etching process;
or, wherein the display device further comprises at least one anti-reflection layer; wherein the at least one anti-reflection layer is located at a side, facing away from the display panel, of the cover plate; a refractive index of each of the at least one anti-reflection layer falls between a refractive index of the cover plate and a refractive index of air; and in a case that the display device comprises two or more anti-reflection layers, refractive indexes of the two or more anti-reflection layers decrease sequentially in a direction away from the cover plate.

2. The display device according to claim 1 , wherein the optical film layer comprises three diffusers.

3. The display device according to claim 1 , wherein the haze of each of the at least two diffusers is 98%.

4. The display device according to claim 1 , wherein the backlight module further comprises a light emitting diode (LED) light source, and an optical band of the LED light source is greater than 455 nm.

5. The display device according to claim 4 , wherein the optical band of the LED light source is 460 nm.

6. The display device according to claim 1 , wherein each of corners of two ends of a bezel of a side, close to an integrated circuit chip, of each of the display panel and the backlight module is arranged as a chamfer.

7. The display device according to claim 6 , wherein the chamfers at the two ends of the display panel and the chamfers at the two ends of the backlight module are aligned; and
a chamfer amount of each of the chamfers at the two ends of each of the display panel and the backlight module ranges from 0.5 mm to 5 mm.

8. The display device according to claim 1 , wherein the haze of the atomization layer is 35%.

9. The display device according to claim 1 , comprising six anti-reflection layers.

10. The display device according to claim 1 , comprising one anti-reflection layer, wherein the refractive index of the anti-reflection layer is 1.25.

Assignees

• Hefei Boe Optoelectronics Tech
• Boe Technology Group Co Ltd

Inventors

• Li Hu
• Wang Tingfei
• Zheng Liangliang
• Kang Hai
• Zhang Douqing
• Dong Zhao
• Zhao Xuemei

Classifications

• G02F1/133331

  Cover glasses · CPC title

• G02F1/133504 Primary

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

• G02F1/1335

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/1336

  Illuminating devices · CPC title

• G02F1/133606 Primary

  including a specially adapted diffusing, scattering or light controlling members · CPC title