Display apparatus and control method thereof

The embodiment of the invention provides a display device and a control method thereof. The display device comprises a first backlight module; the second backlight module is located on the light emitting side of the first backlight module; the display panel is located on the side, away from the first backlight module, of the second backlight module. Wherein the first backlight module comprises a first lamp panel, and the first lamp panel emits light to one side of the second backlight module; the second backlight module comprises at least one second lamp panel, all the second lamp panels are arranged in a laminated mode, and all the second lamp panels transmit the light rays emitted by the first backlight module and emit the light rays to the display panel; the first lamp panel comprises a plurality of first light sources, and each second lamp panel comprises a plurality of second light sources; orthographic projections of the first light sources and the second light sources on the display panel are not overl