The invention relates to a display device, and a display control method and device and relates to the display technology field. The display control method comprises steps that statistics of image data of each pixel in a preset region of a to-be-displayed frame is carried out, a first brightness threshold of the preset region is determined, and the first brightness threshold is corrected to acquire a second brightness threshold; whether a brightness value of each pixel of the preset region is smaller than the second brightness threshold is determined; if not, the image data of the pixel is corrected according to a first multiple; if yes, the image data of the pixel is corrected according to the second multiple greater than the first multiple; a brightness reduction coefficient of a backlight is determined according to the first brightness threshold and the second brightness threshold, and light emitting brightness of the backlight is reduced according to the brightness reduction coefficient. The method is advantaged in that a light leakage phenomenon can be ameliorated, display image contrast of a liquid crystal screen is improved, and power consumption of the display device is reduced.