DISPLAY DEVICE

• US 20200133050A1
• Filed: 05/23/2019
• Published: 04/30/2020
• Est. Priority Date: 10/24/2018
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., K-Tronics (Suzhou) Technology Co., Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., K-Tronics (Suzhou) Technology Co., Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: DAI, Hailong, LI, Yuan
• Granted Patent: US 10,678,084 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606
• CPC Class Codes: G02F 1/133567 on the back side
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133605 including specially adapted reflectors
• CPC Class Codes: G02F 1/133606 including a specially adapted diffusing, scattering or light controlling members
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means

Abstract

A display device is provided in the present disclosure. The display device includes a liquid crystal panel, a diaphragm assembly, and a back plate. The liquid crystal panel has a light incident surface and a light exit surface which are oppositely disposed. The diaphragm assembly is attached to and fixed to the light incident surface of the liquid crystal panel, and configured to at least diffuse light entering the light incident surface. The back plate is disposed at a side of the diaphragm assembly away from the light incident surface of the liquid crystal panel, and configured to support the diaphragm assembly. The back plate includes a bottom plate and a side plate. The bottom plate is configured to be a flat plate structure, and oppositely disposed with the diaphragm assembly. The side plate is configured to surround the bottom plate, connected with a periphery of the bottom plate, and configured to extend to a side of the diaphragm assembly away from the liquid crystal panel in the direction toward the diaphragm assembly to support the diaphragm assembly.

Claims

1. A display device, comprising:

a liquid crystal panel having a light incident surface and a light exit surface which are oppositely disposed;

a diaphragm assembly, of which one surface near the liquid crystal panel is directly and completely attached to and fixed to the light incident surface of the liquid crystal panel, the diaphragm assembly being configured to at least diffuse light entering the light incident surface, and an area of a surface of the diaphragm assembly near the liquid crystal panel being the same as an area of the light incident surface of the liquid crystal panel such that an edge of the diaphragm assembly is flush with an edge of the liquid crystal panel;

a back plate disposed at a side of the diaphragm assembly away from the light incident surface of the liquid crystal panel, and being configured to support the diaphragm assembly, the back plate comprising;

a bottom plate configured to be a flat plate structure, and oppositely disposed with the diaphragm assembly;

a side plate configured to surround the bottom plate connected with a periphery of the bottom plate, and configured to extend to a side of the diaphragm assembly away from the liquid crystal panel in the direction toward the diaphragm assembly to support the diaphragm assembly;

a supporting plate configured to contact a surface of the diaphragm assembly away from the liquid crystal panel to support the diaphragm assembly, wherein a first side of the supporting plate is connected with a periphery of a side of the side plate away from the bottom plate, and a second side of the supporting plate protrudes from a periphery of the diaphragm assembly and the liquid crystal panel; and

a protrusion provided on a surface of the back plate near the diaphragm assembly.

2. The display device according to claim 1, wherein the diaphragm assembly comprises a diffusion sheet and a prism sheet which are disposed to stack.

3. The display device according to claim 2, wherein the diffusion sheet comprises a first substrate and a diffusion layer which are disposed to stack, and the diffusion layer comprises diffusion particles.

4. The display device according to claim 3, wherein a thickness of the first substrate is from 100 μ

m to 125 μ

m and a thickness of the diffusion layer is from 20 μ

m to 40 μ

m.

5. The display device according to claim 2, wherein the prism sheet comprises a second substrate and a prism layer which are disposed to stack, the prism layer comprising a plurality of prism units protruded toward the light incident surface.

6. The display device according to claim 5, wherein a thickness of the second substrate is from 100 μ

m to 125 μ

m and a height of the prism unit is from 20 μ

m to 40 μ

m.

7. The display device according to claim 1, wherein the side plate is configured to be a flat plate structure or an arc shape plate structure protruded in a direction away from the bottom plate.

9. The display device according to claim 1, wherein an intersection angle between the side plate and the bottom plate is an obtuse angle.

10. The display device according to claim 1, wherein the bottom plate, the side plate, and the diaphragm assembly are together limited in a cavity.

11. The display device according to claim 10, further comprising:

a light source disposed on a surface of the back plate near to the diaphragm assembly and located in the cavity.

12. The display device according to claim 11, further comprising:

a reflective layer disposed in the cavity, the reflective layer comprising;

a first reflective portion attached to a surface of the bottom plate near the diaphragm assembly; and

a second reflective portion having a first side connected with a periphery of the first reflective portion and a second side being configured to extend to a side of the diaphragm assembly away from the liquid crystal panel in a direction away from the first reflective portion.

13. The display device according to claim 12, wherein the second reflective portion is attached to the side plate or has a gap with the side plate.

14. The display device according to claim 13, wherein a through hole is disposed at a position of the reflective layer corresponding to the light source to expose the light source in the cavity through the light source passing through the through hole.

15. The display device according to claim 1, further comprising a side frame configured to surround the liquid crystal panel and the diaphragm assembly, a side of the side frame being connected with the other side of the supporting plate extending out the periphery of the diaphragm assembly and the liquid crystal panel.

16. A method, comprising providing the display device according to claim 1.

8. (canceled)