The present invention provides a display device which includes a first substrate, a second substrate, a third substrate, and a fourth substrate. The first substrate and the second substrate are arranged opposite to each other. The third substrate and the fourth substrate are arranged opposite to each other. A liquid crystal layer is located between the first substrate and the second substrate. A bistable polymer dispersed liquid crystal layer is located between the third substrate and the fourth substrate. A band-pass filter is located between the liquid crystal layer and the bistable polymer dispersed liquid crystal layer. A backlight module is located on one side of the fourth substrate away from the third substrate.