According to one embodiment, a display device, includes a first substrate including a first conductive layer, a second substrate including a base having a first upper surface on a side opposite to a first lower surface opposed to the first substrate, a second conductive layer provided on the first upper surface, a third conductive layer provided on the first upper surface and electrically connected to the second conductive layer, a fourth conductive layer covering the third conductive layer and having a light-shielding property, a first through hole provided in the base, and an insulating material overlapping the connection material and having a light-shielding property.