Cover window for display device and display device including the same

Patent metadata

Field	Value
Publication number	US-10401906-B2
Application number	US-201715632284-A
Country	US
Kind code	B2
Filing date	Jun 23, 2017
Priority date	Oct 7, 2016
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A cover window for a display device includes a first film; a second film on the first film; an adhesive layer between the first film and the second film; a coating layer on the second film; and an inner anti-reflective layer between the first film and the coating layer.

First claim

What is claimed is:

1. A cover window for a display device, comprising:
a first film;
a second film on the first film;
an adhesive layer between the first film and the second film;
a coating layer on the second film;
an inner anti-reflective layer between the first film and the coating layer; and
an outer anti-reflective layer on the coating layer, wherein the outer anti-reflective layer is the outermost layer of the cover window.

2. The cover window for the display device of claim 1 , wherein the inner anti-reflective layer comprises at least one of:
a first inner anti-reflective layer between the first film and the adhesive layer;
a second inner anti-reflective layer between the adhesive layer and the second film; and
a third inner anti-reflective layer between the second film and the coating layer.

3. The cover window for the display device of claim 2 ,
wherein a refractive index of the first inner anti-reflective layer is between that of the first film and that of the adhesive layer,
wherein a refractive index of the second inner anti-reflective layer is between that of the adhesive layer and that of the second film, and
wherein a refractive index of the third inner anti-reflective layer is between that of the second film and that of the coating layer.

4. The cover window for the display device of claim 2 , wherein refractive indexes of the first inner anti-reflective layer, the second inner anti-reflective layer, and the third inner anti-reflective layer are each in a range of about 1.467 to about 1.667.

5. The cover window for the display device of claim 2 , wherein thicknesses of the first inner anti-reflective layer, the second inner anti-reflective layer, and the third inner anti-reflective layer are each in a range of about 0.1 μm to about 2 μm.

6. The cover window for the display device of claim 1 , wherein a refractive index of the outer anti-reflective layer is between that of the coating layer and that of air.

7. The cover window for the display device of claim 1 , wherein a refractive index of the outer anti-reflective layer is in a range of about 1.200 to about 1.467.

8. The cover window for the display device of claim 1 ,
wherein the inner anti-reflective layer comprises a binder, and
wherein the binder comprises at least one of silicon, epoxy, acryl, vinyl acetate, a silicon oxide, and an aluminum oxide.

9. The cover window for the display device of claim 1 , wherein the coating layer comprises urethane.

10. The cover window for the display device of claim 1 , wherein the first film and the second film each comprise at least one of polyimide (PI), polyamide-imide (PAI), polyetheretherketone (PEEK), and polyetherimide (PEI).

11. The cover window for the display device of claim 1 , wherein the adhesive layer comprises at least one of ethylene vinyl acetate (EVA), polydimethylsiloxane (PDMS), polyurethane (PU), urethane, acryl, and a silicon-based material.

12. A display device comprising:
a display panel; and
a cover window on the display panel,
wherein the cover window comprises:
a first film;
a second film on the first film;
an adhesive layer between the first film and the second film;
a coating layer on the second film;
an inner anti-reflective layer between the first film and the coating layer; and
an outer anti-reflective layer on the coating layer, wherein the outer anti-reflective layer is the outermost layer of the cover window.

13. The display device of claim 12 , wherein the inner anti-reflective layer comprises at least one of:
a first inner anti-reflective layer between the first film and the adhesive layer;
a second inner anti-reflective layer between the adhesive layer and the second film; and
a third inner anti-reflective layer between the second film and the coating layer.

14. The display device of claim 13 ,
wherein a refractive index of the first inner anti-reflective layer is between that of the first film and that of the adhesive layer,
wherein a refractive index of the second inner anti-reflective layer is between that of the adhesive layer and that of the second film, and
wherein a refractive index of the third inner anti-reflective layer is between that of the second film and that of the coating layer.

15. The display device of claim 13 , wherein refractive indexes of the first inner anti-reflective layer, the second inner anti-reflective layer, and the third inner anti-reflective layer are each in a range of about 1.467 to about 1.667.

16. The display device of claim 13 , wherein thicknesses of the first inner anti-reflective layer, the second inner anti-reflective layer, and the third inner anti-reflective layer are each in a range of about 0.1 μm to about 2 μm.

17. The display device of claim 12 , wherein a refractive index of the outer anti-reflective layer is between that of the coating layer and that of air.

18. The display device of claim 12 , wherein a refractive index of the outer anti-reflective layer is in a range of about 1.200 to about 1.467.

19. A cover window for a display device, comprising:
a first film;
a second film on the first film;
an adhesive layer between the first film and the second film;
a coating layer on the second film; and
an inner anti-reflective layer between the first film and the coating layer,
wherein the coating layer comprises a self-restorable urethane material.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Min-Hoon
• Shin Heon Jung
• Oh Hye-Jin
• Lee Jeoung Sub
• Kim Bo A
• Kim Sang Hoon
• Park Sang-Il
• Oh Hyun Joon

Classifications

• G02B1/111 Primary

  using layers comprising organic materials · CPC title

• B32B27/281

  comprising polyimides · CPC title

• G06F2200/1633

  Protecting arrangement for the entire housing of the computer · CPC title

• B32B2255/26

  Polymeric coating · CPC title

• G02B1/12

  by surface treatment, e.g. by irradiation · CPC title