Flexible display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10326101-B2
Application number	US-201715841740-A
Country	US
Kind code	B2
Filing date	Dec 14, 2017
Priority date	Dec 28, 2016
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

A flexible display device and method of manufacturing the same are provided. A flexible display device includes a display region and a non-display region, the display region including a plurality of pixels, the non-display region being outside the display region. The flexible display device further includes: a substrate, a side sealant covering at least part of the non-display region of the substrate, and an intermediate layer between the substrate and the side sealant.

First claim

What is claimed is:

1. A flexible display device including a display region and a non-display region, the display region including a plurality of pixels, the non-display region being outside the display region, the flexible display device comprising:
a substrate;
a side sealant covering at least part of the non-display region of the substrate; and
an intermediate layer between the substrate and the side sealant,
wherein a bottom surface of the intermediate layer is in contact with a plurality of regions having different surface properties from each other.

2. The flexible display device of claim 1 , wherein the intermediate layer is a compound represented by the following chemical formula:
(X) n -Si—(OR) m,   [Chemical Formula 1]

where:
n=1˜3,
m=1˜3,
(n+m)=4,
X is one of: mercapto, vinyl, epoxy, amino, and methacryl, and
R is an alkyl group.

3. The flexible display device of claim 1 , wherein the intermediate layer comprises at least one of: silane, silicone rubber, and silicone emulsion.

4. The flexible display device of claim 1 , further comprising:
an anisotropic conductive film (ACF) layer in the non-display region; and
a flexible film adhered to the substrate, the ACF being between the flexible film and the substrate,
wherein the intermediate layer covers:
at least part of the ACF layer,
at least part of the flexible film, and
at least part of the substrate.

5. The flexible display device of claim 4 , wherein the intermediate layer is in contact with the substrate or with at least one insulation layer provided on the on the substrate.

6. The flexible display device of claim 1 , further comprising:
an anisotropic conductive film (ACF) layer in the non-display region; and
a flexible film adhered to the substrate, the ACF being between the flexible film and the substrate,
wherein the intermediate layer covers:
at least part of the flexible film, and
at least part of the substrate.

7. The flexible display device of claim 6 , wherein the intermediate layer is in contact with the substrate or with at least one insulation layer provided on the on the substrate.

8. The flexible display device of claim 1 , wherein an area of the intermediate layer is greater than or equal to an area of the side sealant.

9. The flexible display device of claim 1 , further comprising:
an anisotropic conductive film (ACF) layer in the non-display region; and
a flexible film adhered to the substrate, the ACF being between the flexible film and the substrate,
wherein the side sealant covers at least part of the flexible film.

10. The flexible display device of claim 1 , further comprising:
an encapsulation layer covering the pixels,
wherein the side sealant is in contact with the encapsulation layer.

11. A flexible display device, comprising:
a substrate comprising:
a display region; and
a non-display region outside of the display region;

a side sealant on the non-display region; and
an intermediate layer between the substrate and the side sealant,
wherein the intermediate layer comprises:
a bottom surface in contact with a plurality of regions having different surface properties from each other, and
a top surface in contact with a region having one surface property.

12. A method of manufacturing a flexible display device including a display region and a non-display region, the display region including a plurality of pixels, the non-display region being outside the display region, the method comprising:
providing a substrate;
covering at least part of the non-display region of the substrate with a side sealant; and
providing an intermediate layer between the substrate and the side sealant,
wherein a bottom surface of the intermediate layer is in contact with a plurality of regions having different surface properties from each other.

13. The method of claim 12 , wherein providing the intermediate layer comprises providing a compound represented by the following chemical formula:
(X) n -Si—(OR) m,   [Chemical Formula 1]

where:
n=1˜3,
m=1˜3,
(n+m)=4,
X is one of: mercapto, vinyl, epoxy, amino, and methacryl, and
R is an alkyl group.

14. The method of claim 12 , wherein providing the intermediate layer comprises providing at least one of: silane, silicone rubber, and silicone emulsion.

15. The method of claim 12 , further comprising:
providing an anisotropic conductive film (ACF) layer in the non-display region; and
adhering a flexible film to the substrate, the ACF being between the flexible film and the substrate,
wherein the intermediate layer covers:
at least part of the ACF layer,
at least part of the flexible film, and
at least part of the substrate.

16. The method of claim 15 , wherein the intermediate layer is in contact with the substrate or with at least one insulation layer provided on the on the substrate.

17. The method of claim 12 , further comprising:
providing an anisotropic conductive film (ACF) layer in the non-display region; and
adhering a flexible film to the substrate, the ACF being between the flexible film and the substrate,
wherein the intermediate layer covers:
at least part of the flexible film, and
at least part of the substrate.

18. The method of claim 17 , wherein the intermediate layer is in contact with the substrate or with at least one insulation layer provided on the on the substrate.

19. The method of claim 12 , wherein an area of the intermediate layer is greater than or equal to an area of the side sealant.

20. The method of claim 12 , further comprising:
providing an anisotropic conductive film (ACF) layer in the non-display region; and
adhering a flexible film to the substrate, the ACF being between the flexible film and the substrate,
wherein the side sealant covers at least part of the flexible film.

21. The method of claim 12 , further comprising:
covering the pixels with an encapsulation layer,
wherein the side sealant is in contact with the encapsulation layer.

Assignees

• Lg Display Co Ltd

Inventors

• Oh Yeonjun
• Park Jonghyun
• Kim Seulki

Classifications

• H01L51/0097

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic

• H01L51/5243 Primary

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L2227/323

  Electricity · mapped topic