Color control member and display device including same
A color control member includes a color control layer including a quantum dot and a color filter layer on the color control layer, wherein a low refractive layer may be between the color control layer and the color filter layer. The low refractive layer includes a base resin and a plurality of sets of hollow particles dispersed in the base resin, and each of the hollow particles of each set of the sets of hollow particles may have a spherical shape. The sets of hollow particles may have respective average diameters, and a ratio of two average diameters of the respective average diameters of the sets of hollow particles is about 2:1 to about 60:1, and the low refractive layer including the hollow particles may be formed through a continuous process at a low temperature.
1. A color control member comprising:
a color control layer comprising a quantum dot;
a color filter layer on the color control layer; and
a low refractive layer positioned between the color control layer and the color filter layer,
wherein:
the low refractive layer comprises a base resin and a plurality of sets of hollow particles dispersed in the base resin and having mutually different respective average diameters; and
each of the hollow particles of each set of the sets of hollow particles have a spherical shape, and a ratio of two average diameters of the respective average diameters of the sets of hollow particles is about 2:1 to about 60:1,
wherein the hollow particles comprise first hollow particles having an average diameter of equal to or greater than about 46 nm and equal to or less than about 300 nm, and second hollow particles having an average diameter of equal to or greater than about 12 nm and less than about 46 nm, and
wherein the hollow particles further comprise third hollow particles having an average diameter of greater than about 5 nm and less than about 12 nm, and/or fourth hollow particles having an average diameter of greater than about 0 nm and equal to or less than about 5 nm.
2. The color control member of claim 1 , wherein the sets of hollow particles have respective average weights, and
wherein a ratio of two average weights of the respective average weights of the sets of hollow particles is about 4:1 to about 400:1.
3. The color control member of claim 1 , wherein the hollow particles are included in an amount of about 10 wt % to about 50 wt % inclusive with respect to a total weight of the base resin and the hollow particles.
4. The color control member of claim 1 ,
wherein a weight ratio of the weight of the first hollow particles to the weight of the second hollow particles is about 2:1 to about 20:1.
5. The color control member of claim 1 , wherein a thickness of the low refractive layer is about 500 nm to about 3,000 nm inclusive.
6. The color control member of claim 1 , wherein a refractive index of the low refractive layer is about 1.1 to about 1.3 inclusive.
7. The color control member of claim 1 , wherein each of a difference in refractive indices of the low refractive layer and the color control layer, and a difference in refractive indices of the low refractive layer and the color filter layer is about 0.4 to about 0.7 inclusive.
8. The color control member of claim 1 , wherein the base resin is a silicone resin.
9. The color control member of claim 1 , wherein the hollow particles each comprise a core and a shell around the core, and a thickness of the shell is about 10 nm to about 30 nm inclusive.
10. A color control member comprising:
a color control layer comprising a quantum dot;
a color filter layer on the color control layer; and
a low refractive layer positioned between the color control layer and the color filter layer,
wherein:
the low refractive layer comprises a base resin and a plurality of sets of hollow particles dispersed in the base resin and having mutually different respective average diameters; and
each of the hollow particles of each set of the sets of hollow particles have a spherical shape, and a ratio of two average diameters of the respective average diameters of the sets of hollow particles is about 2:1 to about 60:1,
wherein the hollow particles comprise:
first hollow particles having an average diameter of equal to or greater than about 46 nm and equal to or less than about 300 nm;
second hollow particles having an average diameter of equal to or greater than about 12 nm and less than about 46 nm; and
third hollow particles having a smaller average diameter than the first hollow particles, and
wherein a ratio of the average diameter of the first hollow particles to that of the third hollow particles is about 8:1 to about 27:1.
11. A display device comprising:
a base substrate;
a circuit layer on the base substrate;
a light-emitting element layer on the circuit layer;
an encapsulation layer on the light-emitting element layer; and
a color control member on the encapsulation layer, wherein the color control member comprises:
a color control layer on the encapsulation layer and comprising a quantum dot;
a color filter layer on the color control layer; and
a low refractive layer positioned between the color filter layer and the color control layer,
wherein:
the low refractive layer comprises a base resin and a plurality of sets of hollow particles dispersed in the base resin and having mutually different respective average diameters;
each of the hollow particles of each set of the sets of hollow particles have a spherical shape; and
a ratio of two average diameters of the respective average diameters of the sets of hollow particles is about 2:1 to about 60:1,
wherein the hollow particles comprise first hollow particles having an average diameter of equal to or greater than about 46 nm and equal to or less than about 300 nm; and second hollow particles having an average diameter of equal to or greater than about 12 nm and less than about 46 nm, and
wherein the hollow particles further comprise third hollow particles having an average diameter of greater than about 5 nm and less than about 12 nm, and/or fourth hollow particles having an average diameter of greater than about 0 nm and equal to or less than about 5 nm.
12. The display device of claim 11 , wherein the hollow particles are included in an amount of about 10 wt % to about 50 wt % inclusive with respect to a total weight of the base resin and the hollow particles.
13. The display device of claim 11 , wherein the color control member is directly on the encapsulation layer.
14. The display device of claim 11 , wherein a refractive index of the low refractive layer is about 1.1 to about 1.3 inclusive.
15. The display device of claim 11 , further comprising a capping layer on the color filter layer and configured to define an upper surface of the display device.
16. The display device of claim 11 , wherein the low refractive layer is in direct contact with each of the color control layer and the color filter layer.