DISPLAY SYSTEM AND DISPLAY DEVICE

A display device includes a housing, an electro-optic layer, a display to display at least a portion of a rearward image, and an actuator to switch the electro-optic layer between first and second postures. In the first posture, the display displays the portion of the rearward image. In the second posture, the reflectivity of the incident light varies between at least first and second values based on at least one of a first illuminance or a second illuminance, and the second value is larger than the first value. In the first posture, the reflectivity of the incident light is equal to or more than the second value. The first illuminance indicates brightness around a vehicle and is detected by a sensor. The second illuminance indicates intensity of light emitted on a front surface of the display device and is detected by another sensor.