A display device includes a first light source, a second light source, a liquid crystal panel, and a light-guide device. The liquid crystal panel is disposed on the first light source and the second light source. The light-guide device is disposed between the first light source and the liquid crystal panel. A first light-receiving surface of the light-guide device faces toward the first light source. A second light-receiving surface of the light-guide device faces toward the second light source. A first light beam emitted by the first light source enters the light-guide device through the first light-receiving surface and leaves the light-guide device through a light-emitting surface opposite to the first light-receiving surface. A second light beam emitted by the second light source enters the light-guide device through the second light-receiving surface and leaves the light-guide device through the light-emitting surface.