Color conversion element and display device including the same

A display device comprising:

• a display element;
• and
• a color conversion element on the display element,
• wherein the color conversion element comprises:
• a base substrate in which a first region and a second region are defined;
• a color conversion layer on the base substrate, in the first region, and comprising color conversion particles configured to convert a wavelength of incident light;
• a color light transmitting layer on the base substrate and in the second region;
• a color filter layer between the color conversion layer and the base substrate, on which light emitted from the color conversion layer is incident, and which is configured to block a part of the light;
• a first capping layer and a second capping layer disposed between the color filter layer and the color conversion layer;
• a first low refractive layer disposed between the first capping layer and the second capping layer;
• a third capping layer and a fourth capping layer disposed on the color conversion layer;
• and
• a second low refractive layer disposed between the third capping layer and the fourth capping layer;
• wherein each of the color conversion particles comprises a compound represented by Formula 1:
• AmBnXl (1)
• in Formula 1, A is Cs, Rb, or an alloy thereof;
• B is at least one selected from the group consisting of Cu, Sb, Ge, Sn, Bi, and an alloy thereof;
• m, n, and l are each an integer of 1 to 9;
• and X is at least one selected from the group consisting of F, Cl, Br, I, and a mixture thereof,
• wherein the compound is free of Pb,
• the first, second, third and fourth capping layer include inorganic insulating material, and
• the first and second low refractive layer include organic insulating material.