Flexible support plate and flexible display device

Patent metadata

Field	Value
Publication number	US-12274010-B2
Application number	US-202117916136-A
Country	US
Kind code	B2
Filing date	Nov 15, 2021
Priority date	Dec 15, 2020
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

A flexible support plate and a flexible display device. The flexible support plate includes an opening area and at least one solid area arranged on at least one side of the opening area, wherein the opening area is provided with a plurality of through holes; the opening area includes a middle area and a transition area; the transition area is arranged between the middle area and the solid area; and the width of the transition area decreases as the distance to the middle area increases.

First claim

What is claimed is:

1. A flexible support plate, comprising:
an opening area and at least one solid area arranged on at least one side of the opening area; wherein the opening area comprises a middle area and a transition area, both the middle area and the transition area are provided with a plurality of through holes, the transition area is arranged between the middle area and the solid area, and a width of the transition area decreases as a distance to the middle area increases;
wherein the transition area comprises a plurality of first transition sub-areas and a plurality of second transition sub-areas, and wherein a density of through holes in the middle area is equal to or greater than a density of through holes in the plurality of first transition sub-areas, and a density of through holes in the second transition sub-areas is smaller than the density of through holes in the plurality of first transition sub-areas.

2. The flexible support plate according to claim 1 ,
wherein each of the first transition sub-areas is arranged between the middle area and the solid area, and a width of each of the first transition sub-areas decreases as a distance to the middle area increases.

3. The flexible support plate according to claim 2 , wherein a boundary connecting the first transition sub-areas and the solid area is provided in an arc or a polyline shape.

4. The flexible support plate according to claim 2 , wherein the plurality of first transition sub-areas have same shapes and same areas, or the plurality of first transition sub-areas have same shapes and different areas, or the plurality of first transition sub-areas have different shapes and different areas.

5. The flexible support plate according to claim 2 ,
wherein each of the second transition sub-areas is connected between the first transition sub-areas and the solid area, and a width of an end portion of each of the second transition sub-areas close to the solid area decreases as a distance to the middle area increases.

6. The flexible support plate according to claim 5 , wherein a boundary connecting the second transition sub-areas and the solid area is provided in an arc or a polyline shape.

7. The flexible support plate according to claim 5 , wherein the plurality of second transition sub-areas have same shapes and same areas, or the plurality of second transition sub-areas have same shapes and different areas, or the plurality of second transition sub-areas have different shapes and different areas.

8. The flexible support plate according to claim 5 , wherein cross-sectional areas of through holes in the middle area are equal to or greater than cross-sectional areas of through holes in the plurality of first transition sub-areas, and cross-sectional areas of through holes in the second transition sub-areas are smaller than cross-sectional areas of through holes in the plurality of first transition sub-areas.

9. The flexible support plate according to claim 1 , wherein a density of through holes in the transition area decreases as a distance to the middle area increases.

10. The flexible support plate according to claim 1 , wherein a cross-sectional area of the through hole in the transition area decreases as a distance to the middle area increases.

11. A flexible display device, comprising a flexible support plate, wherein the flexible support plate comprises:
an opening area and at least one solid area arranged on at least one side of the opening area; wherein the opening area comprises a middle area and a transition area, both the middle area and the transition area are provided with a plurality of through holes, the transition area is arranged between the middle area and the solid area, and a width of the transition area decreases as a distance to the middle area increases;
wherein the transition area comprises a plurality of first transition sub-areas and a plurality of second transition sub-areas, and wherein a density of through holes in the middle area is equal to or greater than a density of through holes in the plurality of first transition sub-areas, and a density of through holes in the second transition sub-areas is smaller than the density of through holes in the plurality of first transition sub-areas.

12. The flexible display device according to claim 11 , further comprising:
a flexible display panel arranged on a side of the flexible support plate, wherein the flexible display panel comprises a bending area, a planar area, and a connecting area connected between the bending area and the planar area, the bending area is arranged opposite to the middle area of the flexible support plate, and the connecting area is arranged opposite to the transition area of the flexible support plate.

13. The flexible display device according to claim 11 , wherein an orthographic projection of the bending area on the flexible support plate coincides with the middle area.

14. The flexible display device according to claim 11 ,
wherein each of the first transition sub-areas is arranged between the middle area and the solid area, and a width of each of the first transition sub-areas decreases as a distance to the middle area increases.

15. The flexible display device according to claim 14 , wherein a boundary connecting the first transition sub-areas and the solid area is provided in an arc or a polyline shape.

16. The flexible display device according to claim 14 , wherein the plurality of first transition sub-areas have same shapes and same areas, or the plurality of first transition sub-areas have same shapes and different areas, or the plurality of first transition sub-areas have different shapes and different areas.

17. The flexible display device according to claim 14 , wherein each of the second transition sub-areas is connected between the first transition sub-areas and the solid area, and a width of an end portion of each of the second transition sub-areas close to the solid area decreases as a distance to the middle area increases.

18. The flexible display device according to claim 17 , wherein the plurality of second transition sub-areas have same shapes and same areas, or the plurality of second transition sub-areas have same shapes and different areas, or the plurality of second transition sub-areas have different shapes and different areas.

19. The flexible display device according to claim 17 , wherein cross-sectional areas of through holes in the middle area are equal to or greater than cross-sectional areas of through holes in the plurality of first transition sub-areas, and cross-sectional areas of through holes in the second transition sub-areas are smaller than cross-sectional areas of through holes in the plurality of first transition sub-areas.

20. The flexible display device according to claim 11 , wherein a density of through holes in the transition area decreases as a distance to the middle area increases.

Assignees

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

Inventors

• Li Shaoru
• Wang Rui
• Guo Jian
• Kwak Jonguk

Classifications

• H10K59/10

  OLED displays · CPC title

• H05K5/02 Primary

  Details · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title