Display device comprising nano-pattern layer

Patent metadata

Field	Value
Publication number	US-11099301-B2
Application number	US-201816203543-A
Country	US
Kind code	B2
Filing date	Nov 28, 2018
Priority date	Feb 27, 2018
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

An exemplary embodiment provides a display device including: a display panel; and an anti-reflective layer configured to overlap the display panel, wherein the anti-reflective layer includes: a nano-pattern layer configured to include a plurality of nanostructures; and a low-refraction layer configured to cover the nanostructures, wherein the nanostructures are irregularly disposed.

First claim

What is claimed is:

1. A display device comprising:
a display panel; and
an anti-reflective layer overlapping the display panel,
wherein the anti-reflective layer comprises:
a nano-pattern layer comprising a plurality of nanostructures; and
a low-refraction layer covering the nanostructures,
wherein the nanostructures are irregularly arranged,
wherein the display panel comprises:
a color conversion layer comprising a semiconductor nanocrystal; and
a transmissive layer, and
wherein the anti-reflective layer overlaps the color conversion layer and the transmissive layer.

2. The display device of claim 1 , wherein a diameter of each of the nanostructures is in a range of about 300 nm to about 800 nm.

3. The display device of claim 1 , wherein a ratio of a height of the nanostructures relative to each diameter thereof is in a range of about 0.4 to about 0.6.

4. The display device of claim 1 , wherein a refractive index of the nano-pattern layer is in a range of about 1.4 to about 1.7, and a refractive index of the low-refraction layer is in a range of about 1.2 to about 1.4.

5. The display device of claim 4 , wherein a refractive index of the anti-reflective layer gradually increases along a direction toward the display panel.

6. The display device of claim 4 , wherein the low-refraction layer comprises at least one of a porous material and a polymer material comprising a fluorine-substituted hydrocarbon.

7. The display device of claim 4 , wherein the nano-pattern layer comprises at least one selected from polymethyl methacrylate (PMMA), polycarbonate (PC), polyurethane (PU), acrylate monomers or oligomers having two or more functional groups and nine or less functional groups, an organosilane containing an acrylate group or an epoxy group as a reactive group, a phosphazene compound containing an acrylate group or a vinyl group as a reactive group, and an adamantane compound containing an acrylate group or a vinyl group as a reactive group.

8. The display device of claim 1 , wherein each of the nanostructures is at least one selected from a nano-fiber type and a nano-particle type.

9. The display device of claim 1 , wherein light emitted from the display panel has a Lambertian emission pattern.

10. A display device comprising:
a display panel; and
an anti-reflective layer overlapping the display panel,
wherein the anti-reflective layer comprises:
a nano-pattern layer positioned on the display panel and comprising a plurality of nanostructures; and
a low-refraction layer covering the nanostructures,
wherein a refractive index of the nano-pattern layer is greater than a refractive index of the low-refraction layer, and a refractive index of the anti-reflective layer increases along a direction toward the display panel,
wherein the display panel comprises:
a color conversion layer comprising a semiconductor nanocrystal; and
a transmissive layer, and
wherein the anti-reflective layer overlaps the color conversion layer and the transmissive layer.

11. The display device of claim 10 , wherein a diameter of each of the nanostructures is in a range of about 300 nm to about 800 nm.

12. The display device of claim 10 , wherein a ratio of a height of the nanostructures relative to each diameter thereof is in a range of about 0.4 to about 0.6.

13. The display device of claim 10 , wherein the refractive index of the nano-pattern layer is in a range of about 1.4 to about 1.7, and the refractive index of the low-refraction layer is in a range of about 1.2 to about 1.4.

14. The display device of claim 13 , wherein the low-refraction layer comprises a porous material or a polymer material comprising a fluorine-substituted hydrocarbon.

15. The display device of claim 13 , wherein the nano-pattern layer comprises at least one selected from polymethyl methacrylate (PMMA), polycarbonate (PC), polyurethane (PU), acrylate monomers or oligomers having two or more functional groups and nine or less functional groups, an organosilane containing an acrylate group or an epoxy group as a reactive group, a phosphazene compound containing an acrylate group or a vinyl group as a reactive group, and an adamantane compound containing an acrylate group or a vinyl group as a reactive group.

16. The display device of claim 10 , wherein the nanostructures are irregularly arranged.

17. The display device of claim 10 , wherein each of the nanostructures is at least one selected from a nano-fiber type and a nano-particle type.

18. The display device of claim 10 , wherein light emitted from the display panel has a Lambertian emission pattern.

Assignees

• Samsung Display Co Ltd

Inventors

• Lim Ho

Classifications

• G02F1/133617

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• G02F2202/13

  photorefractive · CPC title

• G02F1/133502 Primary

  Antiglare, refractive index matching layers · CPC title

• G02B1/118

  having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures · CPC title

• G02F1/133509

  Filters, e.g. light shielding masks · CPC title