Flexible display apparatus

Patent metadata

Field	Value
Publication number	US-10866618-B2
Application number	US-201916665776-A
Country	US
Kind code	B2
Filing date	Oct 28, 2019
Priority date	Nov 28, 2018
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A flexible display apparatus is disclosed. The flexible display apparatus may include a flexible display panel including a display area and a non-display area and a backplate structure on the flexible display panel and configured to support the flexible display panel. The backplate structure includes an elastic structure and a rigid structure that is less flexible than the elastic structure.

First claim

What is claimed is:

1. A flexible display apparatus including:
a flexible display panel including a display area and a non-display area; and
a backplate structure on the flexible display panel such that the backplate structure overlaps at least the display area, the backplate structure including an elastic structure and a rigid structure disposed in the elastic structure, the elastic structure more flexible than the rigid structure,
wherein the rigid structure comprises a plurality of island patterns, each of the plurality of island patterns spaced apart from another one of the plurality of island patterns.

2. The flexible display apparatus of claim 1 , wherein the elastic structure comprises a viscoelastic material.

3. The flexible display apparatus of claim 2 , wherein a Young's modulus of the viscoelastic material is between 10 4 Pa and 10 6 Pa.

4. The flexible display apparatus of claim 1 , wherein the elastic structure is in contact with the plurality of island patterns.

5. The flexible display apparatus of claim 1 , wherein each of the plurality of island patterns comprises a shape from one of a point shape, a rod shape, an elliptical shape, a ribbon shape, a dumbbell shape, a round shape, a rectangular shape, a rhombic shape, or a polygonal shape.

6. The flexible display apparatus of claim 1 , wherein the elastic structure includes a plurality of opening areas, and the rigid structure is disposed within the plurality of opening areas of the elastic structure.

7. A flexible display apparatus including:
a flexible display panel including a plurality of pixels, each of the plurality of pixels comprising an electroluminescence element;
an elastic structure disposed on a back surface of the flexible display panel; and
a plurality of patterns disposed in the elastic structure, the plurality of patterns having a length along a first direction; and
wherein the plurality of patterns is more rigid than the elastic structure.

8. The flexible display apparatus of claim 7 ,
wherein the flexible display panel includes a folding area and a non-folding area, and
wherein the plurality of patterns is disposed in the folding area without being disposed in the non-folding area.

9. The flexible display apparatus of claim 7 , wherein the elastic structure covers a first surface and a second surface of each of the plurality of patterns, the second surface closer to the flexible display panel than the first surface.

10. The flexible display apparatus of claim 7 , wherein each of the plurality of patterns extends along the first direction, the first direction parallel to a folding axis across which the flexible display apparatus is folded.

11. The flexible display apparatus of claim 7 , wherein a thickness of the elastic structure is thicker than a thickness of the plurality of patterns.

12. The flexible display apparatus of claim 7 , wherein each of the plurality of patterns is spaced apart from another one of the plurality of patterns at a specific interval.

13. The flexible display apparatus of claim 8 , wherein the non-folding area is supported by a planar material made of a same material of the plurality of patterns.

14. A flexible display apparatus including:
a flexible display panel configured to display an image; and
a backplate structure on a rear surface of the flexible display panel, the backplate structure including a rigid structure and an elastic structure, the elastic structure having a plurality of openings and the rigid structure disposed within the plurality of openings;
wherein the elastic structure is more flexible than the rigid structure.

15. The flexible display apparatus of claim 14 , wherein the flexible display panel includes an electroluminescence element.

16. The flexible display apparatus of claim 14 , wherein a rigidity of the backplate structure along a first direction is greater than a rigidity of the backplate structure along a second direction that is perpendicular to the first direction.

17. The flexible display apparatus of claim 16 , wherein a stretchability of the backplate structure along the second direction is greater than a stretchability of the backplate structure along the first direction.

18. The flexible display apparatus of claim 14 , wherein the elastic structure comprises a mesh pattern.

19. The flexible display apparatus of claim 18 , wherein a portion of the elastic structure is disposed between the flexible display panel and the rigid structure.

Assignees

• Lg Display Co Ltd

Inventors

• Yeom Moonsoo

Classifications

• H04M1/0268

  including a flexible display panel · CPC title

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• G09F9/301 Primary

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

• G06F1/1641

  the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence) · CPC title

• G06F1/1616

  with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position · CPC title