Stacked-screen display device and method for controlling display device

A display device, comprising:

• a backlight module, a light control panel and a display panel which are stacked in sequence, wherein the backlight module comprises a backplane, a reflector and a diffuser which are stacked in sequence, and the reflector is provided with a plurality of light-emitting units, the backlight module is provided with temperature sensors;
• wherein the reflector has a first central axis and a second central axis which are perpendicular to each other;
• the temperature sensors are arranged on a side of the reflector close to the diffuser and the temperature sensors are symmetrically distributed with respect to the first central axis;
• wherein the reflector further comprises two diagonal lines, the diagonal lines intersect with the first central axis and the second central axis, and the temperature sensors are arranged on each of the diagonal lines.