According to one embodiment, a display device includes a first substrate including an insulating substrate, a color filter layer located above the insulating substrate, a signal line located between the insulating substrate and the color filter layer, a metal line located above the color filter layer, a first light-shielding layer stacked on the metal line, a common electrode located above the first light-shielding layer, a pixel electrode opposed to the common electrode, a second substrate opposed to the first substrate, and a liquid crystal layer held between the first substrate and the second substrate.