Display device comprising a bendable light-transmissive layer and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11320697-B2
Application number	US-201816335742-A
Country	US
Kind code	B2
Filing date	Sep 3, 2018
Priority date	Nov 27, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

Disclosed is a display device comprising a display panel, a backlight module and a bendable light-transmissive layer. The display panel comprises a light incident surface and a light exit surface opposite to each other and a plurality of panel sides connecting the light incident surface with the light exit surface. The backlight module is located on the light incident surface of the display panel and comprises a first surface facing the light incident surface, a second surface opposite to the first surface, and a plurality of module sides connecting the first surface with the second surface. The bendable light-transmissive layer at least partially covers the light exit surface of the display panel, the plurality of panel sides and the plurality of module sides to fix the display panel and the backlight module.

First claim

The invention claimed is:

1. A display device, comprising a display panel, a backlight module and a bendable light-transmissive layer, wherein
the display panel comprises a light incident surface and a light exit surface opposite to each other, and a plurality of panel sides connecting the light incident surface with the light exit surface,
the backlight module is located on the light incident surface of the display panel, and comprises a first surface facing the light incident surface, a second surface opposite to the first surface, and a plurality of module sides connecting the first surface with the second surface, the backlight module comprises an optical film, a light guide plate and an outer frame stacked sequentially in a direction facing away from the display panel, and the outer frame covers the second surface of the backlight module and side surfaces of the optical film and the light guide plate, and
the bendable light-transmissive layer at least partially covers the light exit surface of the display panel, the plurality of panel sides and the plurality of module sides to fix the display panel and the backlight module, and an orthographic projection of the light exit surface of the display panel on the light incident surface of the display panel falls within an orthographic projection of the bendable light-transmissive layer on the light incident surface of the display panel.

2. The display device according to claim 1 , wherein
the plurality of panel sides and the plurality of module sides form a plurality of device sides of the display device, and
the bendable light-transmissive layer comprises a first layer structure located on the light exit surface of the display panel and a second layer structure attached onto at least two of the plurality of device sides.

3. The display device according to claim 2 , wherein
the first layer structure comprises a polarizing structure.

4. The display device according to claim 3 , further comprises:
a first polarizer attached onto the light incident surface of the display panel, wherein the first layer structure is located on a surface of the first polarizer facing away from the display panel.

5. The display device according to claim 2 , further comprises:
a second polarizer attached onto the light exit surface of the display panel, wherein the first layer structure is located on a surface of the second polarizer facing away from the display panel.

6. The display device according to claim 5 , wherein
the first layer structure is attached onto the second polarizer by an optical adhesive, and
the second layer structure is attached onto at least two of the plurality of device sides by an optical adhesive.

7. The display device according to claim 2 , wherein
the second layer structure is further attached onto the second surface of the backlight module.

8. The display device according to claim 2 , wherein
the outer frame covers the plurality of module sides and the second surface, and the second layer structure is attached onto the outer frame.

9. The display device according to claim 2 , wherein
the second layer structure is attached onto two opposite device sides or all four device sides of the plurality of device sides.

10. The display device according to claim 3 , wherein
the polarizing structure has a thickness of 60-120 μm.

11. The display device according to claim 3 , wherein
the polarizing structure comprises a pressure sensitive adhesive, a first protective layer, a layer of polyvinyl alcohol and a second protective layer stacked sequentially in a direction facing away from the display panel.

12. The display device according to claim 2 , wherein
the bendable light-transmissive layer has a thickness of 10-20 μm.

13. A manufacturing method for a display device, comprising steps of:
providing a display panel, the display panel comprising a light incident surface and a light exit surface opposite to each other, and a plurality of panel sides connecting the light incident surface with the light exit surface;
providing a bendable light-transmissive layer on the light exit surface of the display panel;
providing a backlight module on the light incident surface of the display panel, the backlight module comprising a first surface facing the light incident surface, a second surface opposite to the first surface, and a plurality of module sides connecting the first surface with the second surface, the backlight module comprising an optical film, a light guide plate and an outer frame stacked sequentially in a direction facing away from the display panel, and the outer frame covering the second surface of the backlight module and side surfaces of the optical film and the light guide plate; and
bending the bendable light-transmissive layer such that the bendable light-transmissive layer at least partially covers the light exit surface of the display panel, the plurality of panel sides and the plurality of module sides to fix the display panel and the backlight module, wherein an orthographic projection of the light exit surface of the display panel on the light incident surface of the display panel falls within an orthographic projection of the bendable light-transmissive layer on the light incident surface of the display panel.

14. The method according to claim 13 , wherein
the plurality of panel sides and the plurality of module sides form a plurality of device sides of the display device, and the bendable light-transmissive layer comprises a first layer structure located on the light exit surface of the display panel and a second layer structure attached onto at least two of the plurality of device sides;
the step of providing a bendable light-transmissive layer on the light exit surface of the display panel comprises a sub-step of attaching the first layer structure onto the light exit surface of the display panel; and
the step of bending the bendable light-transmissive layer comprises a sub-step of bending the bendable light-transmissive layer such that the second layer structure is attached onto at least two of the plurality of device sides.

15. The method according to claim 13 , further comprising:
attaching a first polarizer onto the light incident surface of the display panel before providing a backlight module.

16. The method according to claim 13 , further comprising: attaching a second polarizer onto the light exit surface of the display panel before providing a bendable light-transmissive layer; and
the plurality of panel sides and the plurality of module sides form a plurality of device sides of the display device, and the bendable light-transmissive layer comprises a first layer structure located on the light exit surface of the display panel and a second layer structure attached onto at least two of the plurality of device sides;
the step of providing a bendable light-transmissive layer on the light exit surface of the display panel comprises a sub-step of attaching the first layer structure onto a surface of the second polarizer facing away from the display panel; and
the step of bending the bendable light-transmissive layer comprises a sub-step of bending the bendable light-transmissive layer such that the second layer structure is attached onto at least two of the plurality of device sides.

17. The display device according to claim 3 , wherein the second layer structure is further attached onto the second surface of the backlight module.

18. The display device according to claim 3 , wherein:
the outer frame covers the plurality of module sides and the second s

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Chen Yu
• Wang Zhiyuan
• Wang Ruilin
• Song Dingdong
• Yin Chao
• Gao Run
• Zeng Wei
• Li Mao
• Jin Linyu

Classifications

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F1/133531

  characterised by the arrangement of polariser or analyser axes · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• G02F1/133615 Primary

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

• G02F1/133331 Primary

  Cover glasses · CPC title