Display device

Patent metadata

Field	Value
Publication number	US-12096647-B2
Application number	US-202117483466-A
Country	US
Kind code	B2
Filing date	Sep 23, 2021
Priority date	Dec 17, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A display device according to an example of the present disclosure includes a lower substrate divided into an active area and a non-active area, an upper substrate disposed above the lower substrate, a flexible film connected to a pad area of the lower substrate in the non-active area, a first sealing film disposed in the pad area and having at least one open hole, and a second sealing film disposed on a top surface of the flexible film and a side surface of the upper substrate. By this configuration, moisture which may permeate through a side surface of the display device can be more effectively blocked.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate which is divided into an active area and a non-active area;
a second substrate disposed above the first substrate;
a flexible film which is connected to a pad area of the first substrate in the non-active area;
a first sealing film which is disposed in the pad area and includes at least one open hole; and
a second sealing film which is disposed on a top surface of the flexible film and a side surface of the second substrate.

2. The display device according to claim 1 , further comprising:
a back cover disposed on a rear surface of the first substrate;
an extending sheet which is fastened with a lower side of the first substrate on the rear surface of the first substrate; and
a roller which is fastened with the extending sheet to wind or unwind a lower cover, the back cover, and the extending sheet.

3. The display device according to claim 1 , wherein the first substrate is made of polyimide.

4. The display device according to claim 1 , further comprising:
an insulating layer disposed on the first substrate;
a pixel unit which is disposed on the first substrate of the active area and includes an organic light emitting diode; and
an encapsulation layer disposed above the pixel unit.

5. The display device according to claim 4 , further comprising:
another insulating layer disposed on the insulating layer,
wherein the another insulating layer extends to a part of the another insulating layer in the active area, and the encapsulation layer is in contact with the another insulating layer.

6. The display device according to claim 1 , wherein the second substrate is disposed to overlap the entire active area and a part of the non-active area.

7. The display device according to claim 4 , further comprising:
an adhesive layer which is disposed between the encapsulation layer and the second substrate, and encloses the encapsulation layer and the pixel unit.

8. The display device according to claim 4 , further comprising:
a first pad disposed in the pad area;
a second pad disposed in the flexible film; and
a conductive adhesive layer which is disposed between the first substrate and the flexible film to electrically connect the first pad and the second pad.

9. The display device according to claim 8 , wherein the open hole of the first sealing film exposes the first pad, and the first pad and the second pad are connected by the open hole.

10. The display device according to claim 8 , wherein the flexible film includes:
a first part of a base film to which the second pad is attached; and
a second part of the base film to which a driving integrated circuit (IC) is attached.

11. The display device according to claim 10 , wherein an upper end of the first sealing film is located above the first part of the base film, and a lower end of the first sealing film is located below the second part of the base film.

12. The display device according to claim 11 , wherein the upper end of the first sealing film is disposed on the insulating layer and is disposed between the second substrate and the adhesive layer and the conductive adhesive layer, and the upper end of the first sealing film has a height corresponding to a top surface of the first part of the base film.

13. The display device according to claim 11 , wherein a lower end of the first sealing film is disposed between the insulating layer and the second part of the base film and is located on a side surface of the conductive adhesive layer, and a side surface of the lower end of the first sealing film matches side surfaces of the first substrate and the insulating layer.

14. The display device according to claim 11 , wherein the second sealing film is disposed on a top surface of the upper end of the first sealing film and a top surface of the first part of the base film and is in contact with the side surfaces of the second substrate and the adhesive layer, and the second sealing film has a height corresponding to a top surface of the second substrate.

15. The display device according to claim 11 , wherein the second sealing film extends to a lower end in a portion in which the flexible film is disposed to cover a part of a top surface of the first part of the base film.

16. The display device according to claim 8 , further comprising:
a third sealing film which is disposed at left, right, and upper edges of the first substrate of the non-active area.

17. The display device according to claim 16 , wherein an inner surface of the third sealing film is in contact with the second substrate and the adhesive layer, and an outer surface matches side surfaces of the first substrate and the insulating layer.

18. The display device according to claim 16 , wherein the third sealing film has a height corresponding to a top surface of the second substrate.

19. The display device according to claim 16 , wherein the first sealing film to the third sealing film include a metal film and an insulating layer coated on a surface of the metal film.

20. The display device according to claim 16 , further comprising:
an adhesive layer attached below the first sealing film to the third sealing film.

Assignees

• Lg Display Co Ltd

Inventors

• Oh Yeonjun
• Yoon Sangwon
• Lee Chanwoo

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/8722 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K50/8426 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K2102/311

  Flexible OLED · CPC title