Display apparatus

Patent metadata

Field	Value
Publication number	US-10698446-B2
Application number	US-201916384042-A
Country	US
Kind code	B2
Filing date	Apr 15, 2019
Priority date	Jun 12, 2018
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A display apparatus includes: a display module in which a folding area foldable with respect to a virtual folding axis on a plane and first and second non-folding areas adjacent to both sides of the folding area are defined and which is configured to display an image; a support plate below the display module; and an adhesion film between the display module and the support plate. The support plate includes a first support plate bonded to the adhesion film on the first non-folding area, and a second support plate bonded to the adhesion film on the second non-folding area. The first support plate includes a plurality of first protrusions protruding toward the second support plate, the second support plate includes a plurality of second protrusions protruding toward the first support plate, and the first and second protrusions are alternately arranged with respect to each other.

First claim

What is claimed is:

1. A display apparatus comprising:
a display module in which a folding area foldable with respect to a virtual folding axis on a plane and a plurality of non-folding areas adjacent to both sides of the folding area are defined and which is configured to display an image;
a support plate having a plate shape and arranged below the display module; and
an adhesion film between the display module and the support plate,
wherein the support plate comprises:
a first support plate bonded to the adhesion film on a first non-folding area of the plurality of non-folding areas, which is adjacent to one of the sides of the folding area; and
a second support plate spaced apart from the first support plate and bonded to the adhesion film on a second non-folding area of the plurality of non-folding areas, which is adjacent to the other side of the folding area,
wherein the first support plate comprises a plurality of first protrusions protruding toward the second support plate,
the second support plate comprises a plurality of second protrusions protruding toward the first support plate, and
the first and second protrusions are alternately arranged with respect to each other.

2. The display apparatus of claim 1 , wherein a first side surface of the first support plate faces a second side surface of the second support plate, and
the plurality of first protrusions protrudes from the first side surface toward the second side surface, and the plurality of second protrusions protrudes from the second side surface toward the first side surface.

3. The display apparatus of claim 1 , wherein, in a non-folded state of the display module, the first and second protrusions overlap the folding area to support the folding area of the display module.

4. The display apparatus of claim 3 , wherein, in the non-folded state of the display module, the first and second protrusions protrude in a sawtooth shape and are arranged to be engaged with each other.

5. The display apparatus of claim 4 , wherein, in a folded state of the display module, the first and second protrusions are spaced apart from the folding area of the display module.

6. The display apparatus of claim 1 , wherein the adhesion film comprises:
a first adhesion film configured to fix the first support plate to the first non-folding area; and
a second adhesion film configured to fix the second support plate to the second non-folding area.

7. The display apparatus of claim 6 , further comprising:
a first stepped layer between the first protrusions and the first adhesion film of the display module; and
a second stepped layer between the second protrusions and the second adhesion film of the display module.

8. The display apparatus of claim 7 , wherein the first and second stepped layers are fixed to the first and second support plates, respectively.

9. The display apparatus of claim 8 , wherein the first and second stepped layers are on top surfaces of the first and second support plates to cover the first and second protrusions, respectively.

10. The display apparatus of claim 7 , wherein, in a non-folded state of the display module, the first and second stepped layers support the folding area.

11. The display apparatus of claim 7 , wherein, in a folded state of the display module, the first and second stepped layers are spaced apart from the folding area of the display module.

12. The display apparatus of claim 1 , wherein the support plate has rigidity greater than that of the display module.

13. The display apparatus of claim 1 , wherein each of the first and second protrusions has a triangular shape when viewed in a plane.

14. The display apparatus of claim 1 , wherein each of the first and second protrusions has a rectangular shape when viewed in a plane.

15. The display apparatus of claim 1 , wherein the adhesion film has an integrated shape.

16. The display apparatus of claim 15 , further comprising a non-adhesion film between the adhesion film and the support plate on the folding area.

17. The display apparatus of claim 16 , wherein the non-adhesion film comprises fluorine or titanium.

18. The display apparatus of claim 16 , wherein the non-adhesion film comprises:
a first non-adhesion film between the first support plate and the adhesion film on the folding area; and
a second non-adhesion film between the second support plate and the adhesion film on the folding area.

19. The display apparatus of claim 18 , wherein the first and second non-adhesion films are fixed to the first and second support plates, respectively.

20. The display apparatus of claim 19 , wherein the first and second non-adhesion films are on top surfaces of the first and second support plates to cover the first and second protrusions, respectively.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Kyungseop
• Park Sungkyun
• Shim Jinbo
• Choi Jaewon
• Hong Jung-Moo

Classifications

• G09F9/301 Primary

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

• G06F1/1641 Primary

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

• G06F1/1616 Primary

  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

• H10K2102/311

  Flexible OLED · CPC title

• H10K77/111

  Flexible substrates · CPC title