Display device

A display device for displaying a color image with a color gamut standard defined by a triangle connecting a first color vertex, a second color vertex, and a third color vertex, the display device comprising:

• a substrate;
• a light source disposed on the substrate and generating first light of a first dominant wavelength corresponding to a first color coordinate located outside the triangle and spaced apart from the first color vertex;
• a conversion layer disposed on the substrate to convert the first light into a plurality of lights having different dominant wavelengths;
• and a color filter layer disposed on the conversion layer, wherein the light source comprises a plurality of semiconductor light emitting devices disposed on a plurality of color areas of the substrate, wherein the conversion layer comprises:
• a first conversion layer disposed on at least one first color area among the plurality of color areas of the substrate to convert the first light into a second light of a second dominant wavelength corresponding to the second color coordinate of the first color vertex and output the first light and the second light;
• a second conversion layer disposed on at least one second color area among the plurality of color areas of the substrate to convert the first light into a third light of a third dominant wavelength corresponding to the third color coordinate of the second color vertex and output the first light and the third light;
• and a third conversion layer disposed on at least one third color area among the plurality of color areas of the substrate to convert the first light into a fourth light of a fourth dominant wavelength corresponding to the fourth color coordinate of the third color vertex and output the first light and the fourth light, and wherein the first conversion layer and the second conversion layer include the same material.