Abstract: The present disclosure provides a display device, which includes an invisible light source module, a wavelength conversion pattern and a display panel. The invisible light source module is configured to provide an invisible light beam. The wavelength conversion pattern is located on a transmission path of the invisible light beam. The wavelength conversion pattern is formed by a wavelength conversion material, the wavelength conversion material is configured to convert invisible light into visible light, and the invisible light beam forms a visible light pattern through the wavelength conversion pattern. The present disclosure also discloses a display control method for controlling a display device. The display device and the display control method of the present disclosure have multiple display modes and may display a preset pattern in a display mode driven by a low-power power supply.