Display device having improved light emission and color reproducibility
An exemplary display device includes: a display panel; a color conversion panel overlapping the display panel; and an optical bonding layer positioned between the display panel and the color conversion panel. The color conversion panel includes: a substrate; a color conversion layer and a transmission layer positioned between the substrate and the display panel; a first capping layer having one side facing the color conversion layer and the transmission layer, and another side facing the display panel; a second capping layer positioned between the first capping layer and the display panel; and an optical layer positioned between the first capping layer and the second capping layer and/or between the second capping layer and the optical bonding layer. A refractive index of the optical layer is lower than at least one of a refractive index of the first capping layer and a refractive index of the second capping layer.
1. A display device comprising:
a display panel;
a color conversion panel overlapping the display panel; and
an interlayer positioned between the display panel and the color conversion panel,
wherein the color conversion panel includes:
a substrate;
a color conversion layer and a transmission layer positioned between the substrate and the display panel;
a capping layer overlapping the color conversion layer and the transmission layer; and
an optical layer positioned between the capping layer and the color conversion layer,
wherein a refractive index of the optical layer is lower than a refractive index of the capping layer.
2. The display device of claim 1 ,
wherein the optical layer is a first optical layer, and
the display device further comprises a second optical layer positioned between the capping layer and the interlayer.
3. The display device of claim 1 , wherein
the optical layer includes at least one of a fluorine-containing copolymer, porous silica, a porous silicon oxide, a silicon oxide, a porous metal oxide, a porous polymer, and an acryl-based resin.
4. The display device of claim 1 , wherein the capping layer has a structure in which layers having different refractive indexes are stacked.
5. The display device of claim 1 , wherein
the capping layer includes at least one of TiO2, SiNx, SiOx, TiN, AlN, Al2O3, SnO2, WO3, and ZrO2.
6. The display device of claim 1 , further comprising a first capping layer disposed between the optical layer and the color conversion layer, and
wherein the capping layer is a second capping layer.
7. The display device of claim 6 ,
the first capping layer includes inorganic material.
8. The display device of claim 6 , wherein
the first capping layer includes silicon nitride.
9. The display device of claim 6 , wherein
the refractive index of the first capping layer is about 1.8 to about 1.9, and
the refractive index of the second capping layer is about 1.4 to about 1.9.
10. The display device of claim 1 , wherein
a thickness of the optical layer is less than a thickness of the interlayer.
11. The display device of claim 10 , wherein
a ratio of the thickness of the interlayer to the thickness of the optical layer is about 1:5 to 1:1.
12. The display device of claim 1 , wherein the transmission layer transmits blue light from a light assembly.
13. The display device of claim 1 , wherein
the interlayer includes a fluoroacryl-based resin.
14. The display device of claim 1 , further comprising
a color filter positioned between the substrate and the color conversion layer.
15. The display device of claim 14 , wherein
the color conversion layer includes a red color conversion layer and a green color conversion layer, and
the red color conversion layer and the green color conversion layer each include a quantum dot.
16. The display device of claim 15 , wherein
the color filter comprises a red color filter overlapping the red color conversion layer, and a green color filter overlapping the green color conversion layer.
17. The display device of claim 1 , wherein
the color conversion layer and the transmission layer include a scattering member.
18. A display device comprising:
a display panel;
a color conversion panel overlapping the display panel; and
an interlayer positioned between the display panel and the color conversion panel,
wherein the color conversion panel includes:
a substrate;
a color conversion layer and a transmission layer positioned between the substrate and the display panel;
a capping layer overlapping the color conversion layer and the transmission layer;
a first optical layer positioned between the capping layer and the color conversion layer; and
a second optical layer positioned between the capping layer and the interlayer,
wherein a refractive index of the optical layer is lower than a refractive index of the capping layer.
19. The display device of claim 18 , wherein
the color conversion layer includes a red color conversion layer and a green color conversion layer, and
the red color conversion layer and the green color conversion layer each include a quantum dot, and
the color filter comprises a red color filter overlapping the red color conversion layer, and a green color filter overlapping the green color conversion layer.
20. The display device of claim 18 , wherein the transmission layer include a scattering member.