Flexible display window and flexible display including the same

Patent metadata

Field	Value
Publication number	US-10882286-B2
Application number	US-201816043715-A
Country	US
Kind code	B2
Filing date	Jul 24, 2018
Priority date	Aug 1, 2017
Publication date	Jan 5, 2021
Grant date	Jan 5, 2021

Abstract

A flexible display window includes a flexible base layer including a flexible resin, a first silica nano particle coating layer including full-type silica nano particles, where the first silica nano particle coating layer is disposed on the flexible base layer, a flexible hard coating layer including a flexible hard coating resin, where the flexible hard coating layer is disposed on the first silica nano particle coating layer, and a second silica nano particle coating layer including hollow-type silica nano particles, where the second silica nano particle coating layer is disposed on the flexible hard coating layer. Thus, the flexible display window can enhance impact-resistance of a flexible display while reducing reflectivity of the flexible display.

First claim

What is claimed is:

1. A flexible display window comprising:
a flexible base layer comprising a flexible resin;
a first silica nano particle coating layer comprising full-type silica nano particles, the first silica nano particle coating layer being disposed on the flexible base layer;
a flexible hard coating layer comprising a flexible hard coating resin, the flexible hard coating layer being disposed on the first silica nano particle coating layer; and
a second silica nano particle coating layer comprising hollow-type silica nano particles, the second silica nano particle coating layer being disposed on the flexible hard coating layer,
wherein the flexible hard coating layer is interposed between the first silica nano particle coating layer and the second silica nano particle coating layer.

2. The flexible display window of claim 1 , wherein the second silica nano particle coating layer further comprises the full-type silica nano particles.

3. The flexible display window of claim 1 , wherein the flexible base layer has a single-layer structure.

4. The flexible display window of claim 1 , wherein the flexible base layer has a multi-layer structure.

5. The flexible display window of claim 1 , wherein the flexible hard coating layer has a single-layer structure.

6. The flexible display window of claim 1 , wherein the flexible hard coating layer has a multi-layer structure.

7. The flexible display window of claim 1 , wherein the flexible resin comprises at least one selected from a polyethylene terephthalate resin, a polyvinyl chloride resin, a polycarbonate resin, a polyimide resin, a polystyrene resin, a polyacrylate resin, a polyurethane resin, and a silicon resin.

8. A flexible display window comprising:
a first flexible base layer comprising a first flexible resin;
a first silica nano particle coating layer comprising full-type silica nano particles, the first silica nano particle coating layer being disposed on the first flexible base layer;
a second flexible base layer comprising a second flexible resin, the second flexible base layer being disposed on the first silica nano particle coating layer; and
a second silica nano particle coating layer comprising hollow-type silica nano particles, the second silica nano particle coating layer being disposed on the second flexible base layer,
wherein the second flexible base layer is interposed between the first silica nano particle coating layer and the second silica nano particle coating layer.

9. The flexible display window of claim 8 , wherein the second silica nano particle coating layer further comprises the full-type silica nano particles.

10. The flexible display window of claim 8 , wherein the first flexible base layer has a single-layer structure.

11. The flexible display window of claim 8 , wherein the first flexible base layer has a multi-layer structure.

12. The flexible display window of claim 8 , wherein the second flexible base layer has a single-layer structure.

13. The flexible display window of claim 8 , wherein the second flexible base layer has a multi-layer structure.

14. A flexible display window comprising:
a first flexible base layer comprising a first flexible resin;
a first silica nano particle coating layer comprising full-type silica nano particles, the first silica nano particle coating layer being disposed on the first flexible base layer;
a second flexible base layer comprising a second flexible resin, the second flexible base layer being disposed on the first silica nano particle coating layer;
a flexible hard coating layer comprising a flexible hard coating resin, the flexible hard coating layer being disposed on the second flexible base layer; and
a second silica nano particle coating layer comprising hollow-type silica nano particles, the second silica nano particle coating layer being disposed on the flexible hard coating layer,
wherein the second flexible base layer and the flexible hard coating layer are interposed between the first silica nano particle coating layer and the second silica nano particle coating layer.

15. The flexible display window of claim 14 , wherein the second silica nano particle coating layer further comprises the full-type silica nano particles.

16. The flexible display window of claim 14 , wherein the first flexible base layer has a single-layer structure.

17. The flexible display window of claim 14 , wherein the first flexible base layer has a multi-layer structure.

18. The flexible display window of claim 14 , wherein the second flexible base layer has a single-layer structure.

19. The flexible display window of claim 14 , wherein the second flexible base layer has a multi-layer structure.

20. The flexible display window of claim 14 , wherein the flexible hard coating layer has a single-layer structure.

21. The flexible display window of claim 14 , wherein the flexible hard coating layer has a multi-layer structure.

22. A flexible display comprising:
a flexible display panel; and
a flexible display window having a coating structure that comprises a first silica nano particle coating layer comprising full-type silica nano particles and a second silica nano particle coating layer comprising hollow-type silica nano particles, the flexible display window being disposed on the flexible display panel,
wherein a target layer is interposed between the first silica nano particle coating layer and the second silica nano particle coating layer.

23. The flexible display of claim 22 , further comprising:
a flexible touch panel disposed between the flexible display panel and the flexible display window or disposed under the flexible display panel.

24. The flexible display of claim 23 , wherein the flexible display panel, the flexible touch panel, and the flexible display window are stacked using pressure sensitive adhesives.

25. The flexible display of claim 22 , the flexible display window comprises:
a flexible base layer comprising a flexible resin;
the first silica nano particle coating layer disposed on the flexible base layer; and
the second silica nano particle coating layer disposed on the flexible hard coating layer,
wherein the flexible hard coating layer composes the target layer.

26. The flexible display of claim 25 , wherein the second silica nano particle coating layer further comprises the full-type silica nano particles.

27. The flexible display of claim 22 , the flexible display window comprises:
a first flexible base layer comprising a first flexible resin;
the first silica nano particle coating layer disposed on the first flexible base layer;
a second flexible base layer comprising a second flexible resin, the second flexible base layer being disposed on the first silica nano particle coating layer; and
the second silica nano particle coating layer disposed on the second flexible base layer,
wherein the second flexible base layer composes the target layer.

28. The flexible display of claim 27 , wherein the second silica nano particle coating layer further comprises the full-type silica nano particles.

29. The flexible display of claim 22 , the flexible display window comprises:
a first flexible base layer comprising a first flexible resin;
the first silica nano particle coating layer disposed on the first flexible base layer;
a second flexible base layer comprising a second fle

Assignees

• Samsung Display Co Ltd

Inventors

• Oh Hye-Jin
• Park Sang-Il
• Shin Heonjung
• Lee Jeoungsub
• Choi Min-Hoon
• Kim Kyungtae
• Kim Boa
• Kim Sanghoon
• Oh Hyun-Joon
• HAN Junghoon

Classifications

• H10K2102/311

  Flexible OLED · CPC title

• H10K50/86

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K50/844 Primary

  Encapsulations · CPC title

• B32B27/08 Primary

  of synthetic resin · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title