A liquid crystal display device includes a light source member including a plurality of light emitting element packages, and a liquid crystal display panel disposed on an upper side of the light source member. The liquid crystal display panel includes a first substrate adjacent to the light source member which includes a first base substrate, a color conversion layer with a quantum dot disposed on an upper side of the first base substrate, and a first polarizing layer disposed on an upper side of the first base substrate. The liquid crystal display panel includes a second substrate facing the first substrate which includes a second base substrate, a second polarizing layer disposed on an upper side of a liquid crystal layer, and a circuit layer disposed on a lower side of the second base substrate. The liquid crystal layer is disposed between the first substrate and the second substrate.