A display device includes: a first substrate including a first area, a second area surrounding the first area, and a third area surrounding the second area; a second substrate facing the first substrate; a sealing member between the first substrate and the second substrate at the third area; a color filter layer under the second substrate; a low refractive index layer under the color filter layer, overlapping with the first area, and spaced from the sealing member; a protective layer covering the low refractive index layer, surrounding a side surface of the low refractive index layer, and including an inorganic material; and a color conversion layer under the protective layer, overlapping with the first area, and including a plurality of color conversion parts spaced from each other.