Display module and preparing method therefor, and display device

Patent metadata

Field	Value
Publication number	US-12164196-B2
Application number	US-202117796272-A
Country	US
Kind code	B2
Filing date	Sep 10, 2021
Priority date	Sep 10, 2021
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A display module, a preparing method therefor and a display device are provided. The display module includes a back plate and a mold frame, the back plate includes a base plate, the base plate includes an edge region, the mold frame is disposed on the edge region, the edge region is provided with a rough structure region, the rough structure region includes multiple rough structures, an orthographic projection of at least part of the rough structures on the base plate overlaps with an orthographic projection of the mold frame on the base plate, and a material of the mold frame fills at least part of space of the rough structures.

First claim

The invention claimed is:

1. A display module, comprising a back plate and a mold frame, wherein the back plate comprises a base plate, the base plate comprises an edge region, the mold frame is disposed on the edge region, the edge region is provided with a rough structure region, the rough structure region comprises a plurality of rough structures, an orthographic projection of at least part of the rough structures on the base plate overlaps with an orthographic projection of the mold frame on the base plate, and a material of the mold frame fills at least part of space of the rough structures, and
wherein the back plate further comprises a side plate, the side plate is located at a peripheral side on the base plate, a side of the mold frame close to the side plate is provided with a boss, the boss is located at an end of the side plate away from the base plate, and a vertical projection of the boss on the base plate at least partially overlaps with a vertical projection of the side plate on the base plate.

2. The display module of claim 1 , wherein a rough structure is a groove at micro-nano scale.

3. The display module of claim 2 , wherein a cross-sectional shape of the groove perpendicular to a plane where the rough structure region is located comprises at least one of a U-shape, an arc shape, and a V-shape.

4. The display module of claim 2 , wherein an average area of an opening of the rough structure in the rough structure region is within a range of 1.5 square microns to 11.5 square microns.

5. The display module of claim 1 , wherein the edge region is provided with a glue inlet hole, the glue inlet hole penetrates the base plate, the material of the mold frame fills at least part of space of the glue inlet hole.

6. The display module of claim 5 , wherein an opening of the glue inlet hole is circular, and a diameter of the opening of the glue inlet hole is 0.45 mm to 0.6 mm.

7. The display module of claim 6 , wherein the rough structure region is in a closed ring shape on the edge region.

8. The display module of claim 5 , wherein the rough structure region is in a closed ring shape on the edge region.

9. The display module of claim 8 , wherein the closed ring shape is provided to surround the base plate and the rough structure region is provided around the glue inlet hole.

10. The display module of claim 5 , wherein a rough structure is arranged in an island shape only surrounding the glue inlet hole.

11. The display module of claim 1 , wherein the base plate is not provided with a glue inlet hole.

12. The display module of claim 11 , wherein the rough structure region is in a closed ring shape on the edge region.

13. The display module of claim 1 , further comprising a backlight assembly, the base plate further comprises a central region, the edge region is located around the central region, the backlight assembly is disposed on the central region, and the mold frame surrounds the backlight assembly.

14. The display module of claim 1 , further comprising a display panel, wherein the display panel is disposed on a side of the mold frame away from the base plate.

15. A display device, comprising: the display module of claim 1 .

16. The display module of claim 1 , wherein the rough structure region is provided to surround the glue inlet hole.

17. The display module of claim 16 , wherein the rough structure region is in a closed ring shape on the edge region.

18. A method for preparing a display module, comprising:
forming a back plate, wherein the back plate comprises a base plate, and the base plate comprises an edge region;
forming a rough structure on at least part of the edge region; and
forming a mold frame on the edge region, and filling at least part of the mold frame in the rough structure,
wherein the back plate further comprises a side plate, the side plate is located at a peripheral side on the base plate, a side of the mold frame close to the side plate is provided with a boss, the boss is located at an end of the side plate away from the base plate, and a vertical projection of the boss on the base plate at least partially overlaps with a vertical projection of the side plate on the base plate.

19. The method for preparing the display module of claim 18 , wherein the rough structure is formed on at least part of the edge region by an electrochemical processing process.

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd

Inventors

• Li Lei
• Xia hang
• Ren Jian
• Shu Zongying
• Xiao Liang
• Zhang Le
• Gao Lu
• Fu Mang
• Liu Quanzhou
• Wang Boning

Classifications

• G02F1/133314

  Back frames · CPC title

• G02F1/133308

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

• G02F1/1336

  Illuminating devices · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title