A display device is provided. The display device includes a display panel and a backlight module. The backlight module is disposed corresponding to the display panel. The backlight module includes a substrate and a plurality of light emitting units. The substrate has a first surface, and the first surface faces the display panel. The plurality of light emitting units are disposed on the first surface. A first distance between the first surface and the display panel is in a range from 0.8 mm to 9 mm.