A display device includes a backlight structure, a first liquid-crystal layer, a second liquid-crystal layer, and polarized layers. The first liquid-crystal layer is disposed on the backlight structure. The second liquid-crystal layer is disposed on the first liquid-crystal layer. The polarized layers are located between the backlight structure and the first liquid-crystal layer, between the first liquid-crystal layer and the second liquid-crystal layer, and located on the second liquid-crystal layer. The extinction ratio of the polarized layers is in a range from about 5000 to 50000.