Color conversion panel and display device including the same

Patent metadata

Field	Value
Publication number	US-10330974-B2
Application number	US-201715494156-A
Country	US
Kind code	B2
Filing date	Apr 21, 2017
Priority date	May 31, 2016
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

An exemplary embodiment of the present disclosure provides a color conversion panel including: a substrate; a polarization layer that is disposed on the substrate and includes a plurality of polarization patterns spaced apart from each other at a predetermined interval; and a color conversion layer that is disposed on the polarization layer, wherein at least one of the plurality of polarization patterns may include an external light interference layer disposed on the substrate and a reflection layer disposed on the external light interference layer.

First claim

What is claimed is:

1. A color conversion panel comprising:
a substrate;
a polarization layer that is disposed on the substrate and includes a plurality of polarization patterns spaced apart from each other at a predetermined interval; and
a color conversion layer and a transmissive layer that are disposed on the polarization layer,
wherein at least one of the plurality of polarization patterns includes a reflection layer disposed on the substrate and an external light interference layer disposed between the reflection layer and the substrate.

2. The color conversion panel of claim 1 , wherein the color conversion layer includes a quantum dot, and
wherein a sum (p=w+d) of a width (w) of one of the plurality of polarization patterns and a distance (d) between adjacent polarization patterns is equal to or less than about 200 nm.

3. The color conversion panel of claim 2 , further comprising an optical layer disposed between the plurality of polarization patterns.

4. The color conversion panel of claim 3 , wherein a refractive index of the optical layer is about 1.0 to about 1.4.

5. The color conversion panel of claim 1 , wherein the external light interference layer includes a first metal layer disposed on the substrate and a first inorganic layer disposed on the first metal layer.

6. The color conversion panel of claim 5 , further comprising a second inorganic layer disposed between the first metal layer and the substrate.

7. The color conversion panel of claim 6 , wherein the first inorganic layer and the second inorganic layer include at least one of a metal oxide, a silicon oxide, and a silicon nitride.

8. The color conversion panel of claim 5 , wherein the first metal layer includes at least one of Cr, Mo, and Ti.

9. The color conversion panel of claim 1 , wherein the reflection layer includes a metal material.

10. The color conversion panel of claim 9 , wherein the metal material includes at least one of Ag, Au, Cu, and Al.

11. The color conversion panel of claim 1 , wherein the polarization layer directly contacts the color conversion layer and the transmissive layer.

12. The color conversion panel of claim 1 , further comprising a capping layer disposed on the color conversion layer and the transmissive layer.

13. A display device comprising:
a display panel; and
a color conversion panel disposed on the display panel,
wherein the color conversion panel includes:
a substrate,
a polarization layer that is disposed between the substrate and the display panel and includes a plurality of polarization patterns spaced apart from each other at a predetermined interval, and
a color conversion layer and a transmissive layer that are disposed between the polarization layer and the display panel, and
wherein at least one of the plurality of polarization patterns includes a reflection layer disposed on the substrate and an external light interference layer disposed between the reflection layer and the substrate.

14. The display device of claim 13 , wherein the color conversion layer includes a quantum dot, and
wherein a sum (p=w+d) of a width (w) of one of the plurality of polarization patterns and a distance (d) between adjacent polarization patterns is equal to or less than about 200 nm.

15. The display device of claim 13 , wherein the external light interference layer includes a first metal layer disposed between the substrate and the display panel and a first inorganic layer disposed between the first metal layer and the display panel.

16. The display device of claim 13 , further comprising an optical layer disposed between the plurality of polarization patterns.

17. The display device of claim 16 , wherein a refractive index of the optical layer is about 1.0 to about 1.4.

18. A display device comprising:
a lower panel;
a color conversion panel overlapping the lower panel; and
a liquid crystal layer disposed between the lower panel and the color conversion panel,
wherein the color conversion panel includes:
a substrate,
a polarization layer that is disposed between the substrate and the liquid crystal layer and includes a plurality of polarization patterns spaced apart from each other at a predetermined interval, and
a color conversion layer and a transmissive layer that are disposed between the polarization layer and the liquid crystal layer, and
wherein at least one of the plurality of polarization patterns includes a reflection layer disposed on the substrate and an external light interference layer disposed between the reflection layer and the substrate.

19. The display device of claim 18 , wherein the color conversion layer includes a quantum dot, and
wherein a sum (p=w+d) of a width (w) of one of the plurality of polarization patterns and a distance (d) between adjacent polarization patterns is equal to or less than about 200 nm.

20. The display device of claim 18 , further comprising an optical layer disposed between the plurality of polarization patterns, wherein a refractive index of the optical layer is about 1.0 to about 1.4.

21. A display device comprising:
a first substrate on which a thin film transistor is disposed;
a second substrate facing the first substrate;
a polarization layer disposed on the second substrate; and
a color conversion layer and a transmissive layer disposed on the polarization layer,
wherein the polarizing layer includes a plurality of polarization patterns spaced apart from each other at a predetermined interval, and
wherein at least one of the plurality of polarization patterns includes a reflection layer disposed on the second substrate, a first inorganic layer disposed between the reflection layer and the second substrate, a metal layer disposed between the first inorganic layer and the second substrate and a second inorganic layer disposed on the metal layer, and
wherein the polarization layer is disposed between the second substrate and the color conversion layer.

22. The display device of claim 21 , further comprising an optical layer disposed between the plurality of polarization patterns,
wherein the color conversion layer includes a quantum dot.

23. The display device of claim 22 , wherein the optical layer includes a plurality of optical layers separated by the plurality of polarization patterns and a connecting layer connecting the plurality of optical layers and disposed on the plurality of polarization patterns.

24. The display device of claim 23 , wherein the transmissive layer does not overlap the plurality of polarization patterns in a plan view.

25. The display device of claim 24 , further comprising a color filter disposed between the color conversion layer and the plurality of polarization patterns.

26. The display device of claim 25 , further comprising a third substrate disposed between the first substrate and the second substrate, and a first polarization layer and a second polarization layer disposed on the first substrate and the third substrate, respectively.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Kwang Keun
• Kwon Jung Hyun
• Kim Young Min
• Park Hae Ii
• Baek Moon Jung

Classifications

• G02F1/133514

  Colour filters · CPC title

• G02F2202/36

  Micro- or nanomaterials · CPC title

• G02F2001/133565

  Physics · mapped topic

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/133528 Primary

  Polarisers · CPC title