Flexible display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-12242305-B2
Application number	US-202318495399-A
Country	US
Kind code	B2
Filing date	Oct 26, 2023
Priority date	Dec 28, 2011
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A flexible display apparatus including: a first film including a first surface and a second surface that are opposite each other, and a first groove formed in the first surface, the first film having a first rigidity; a third film on the second surface of the first film; a fourth film facing the third film; an emission display unit between and encapsulated by the third film and the fourth film; and a second film on the fourth film and facing the first film, the second film having a second rigidity that is less than the first rigidity.

First claim

What is claimed is:

1. A flexible display apparatus comprising:
a first film including a first region, a second region, and a bending portion between the first region and the second region, a plurality of first openings or grooves being defined in the bending portion of the first film;
a third film over the first film, the third film including a bending portion corresponding to the bending portion of the first film;
a fourth film over the third film, the fourth film including a bending portion corresponding to the bending portion of the first film;
an emission display unit between the third film and the fourth film;
an elastic member disposed in correspondence with the bending portion of the third film; and
a second film over the fourth film, the second film including a first surface adjacent to the fourth film, a second surface opposite to the first surface, and a second opening or groove defined in the second surface.

2. The flexible display apparatus of claim 1 , wherein the second opening or groove is disposed in correspondence with the bending portion of the first film.

3. The flexible display apparatus of claim 2 , wherein a thickness of the second film corresponding to the bending portion of the first film is smaller than a thickness of the second film corresponding to the first and second regions.

4. The flexible display apparatus of claim 1 , further comprising an adhesion layer between the third film and the elastic member.

5. The flexible display apparatus of claim 1 , wherein a total width of the plurality of first openings or grooves defined in the bending portion of the first film is at least two times greater than a thickness of the first film.

6. The flexible display apparatus of claim 1 , wherein the third film comprises a plastic material.

7. The flexible display apparatus of claim 1 , wherein the fourth film is configured to encapsulate the emission display unit.

8. The flexible display apparatus of claim 1 , wherein the fourth film comprises a multi-layer.

9. The flexible display apparatus of claim 8 , wherein the multi-layer comprises at least one inorganic film.

10. The flexible display apparatus of claim 8 , wherein the multi-layer comprises at least one organic film.

11. A flexible display apparatus comprising:
a first film including a first region, a second region, and a bending portion between the first region and the second region, a plurality of first openings or grooves being defined in the bending portion of the first film;
a third film over the first film, the third film including a bending portion corresponding to the bending portion of the first film;
a fourth film over the third film, the fourth film including a bending portion corresponding to the bending portion of the first film;
an emission display unit between the third film and the fourth film;
an elastic member disposed in correspondence with the bending portion of the third film; and
a second film over the fourth film, the second film including a first surface adjacent to the fourth film, a second surface opposite to the first surface, and a second opening or groove defined in the second surface,
wherein a thickness of the second film corresponding to the bending portion of the first film is smaller than a thickness of the second film corresponding to the first and second regions of the first film.

12. The flexible display apparatus of claim 11 , wherein the second opening or groove is disposed in correspondence with the bending portion of the first film.

13. The flexible display apparatus of claim 11 , further comprising an adhesion layer between the third film and the elastic member.

14. The flexible display apparatus of claim 11 , wherein a total width of the plurality of first openings or grooves defined in the bending portion of the first film is at least two times greater than a thickness of the first film.

15. The flexible display apparatus of claim 11 , wherein the third film comprises a plastic material.

16. The flexible display apparatus of claim 11 , wherein the fourth film is configured to encapsulate the emission display unit.

17. The flexible display apparatus of claim 16 , wherein the fourth film comprises at least one inorganic film and at least one organic film.

18. A flexible display apparatus comprising:
a first film including a first region, a second region, and a bending portion between the first region and the second region, a plurality of first openings or grooves being defined in the bending portion of the first film;
a third film over the first film, the third film including a bending portion corresponding to the bending portion of the first film;
a fourth film over the third film, the fourth film including a bending portion corresponding to the bending portion of the first film;
an emission display unit between the third film and the fourth film;
an elastic member disposed in correspondence with the bending portion of the third film;
an adhesion layer between the third film and the elastic member; and
a second film over the fourth film, the second film including a first surface adjacent to the fourth film, a second surface opposite to the first surface, and a second opening or groove defined in the second surface,
wherein the second opening or groove is disposed in correspondence with the bending portion of the first film.

19. The flexible display apparatus of claim 18 , wherein a width of the second opening or groove of the second film is at least two times greater than a thickness of the second film.

Assignees

• Samsung Display Co Ltd

Inventors

• Prushinskiy Valeriy
• Hyun Won-Sik
• Na Hyong-Yeol
• Kim Min-Soo
• Kim Mu-Gyeom

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K2102/351

  Thickness · CPC title

• H10K2102/311

  Flexible OLED · CPC title

• H10K85/141

  comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE · CPC title

• H10K77/111

  Flexible substrates · CPC title