A display brightness
control system solves the problems that, when people use computers, some people unconsciously get closeer and closer to computer displays and finally get into a bad
habit, and that, when the people are too close to the computer displays, the people are easily influenced by
electromagnetic radiation, and people's vision are also easily harmed. The display brightness
control system comprises a brightness adjustment
system, a main controller and a distance
detector; the main controller are electrically connected with the brightness adjustment
system and the distance
detector, the distance
detector is disposed on the front face of the display, and the distance detector is used to detect the distance between a
human body on the front side of the display; when the distance detector detects that the distance between the
human body on the front side of the display and the display is less than L, 200mm<=L<=1000mm, the main controller controls the brightness adjustment
system to adjust the brightness of the display to darken; and, when the distance detector detects that the distance between the
human body on the front side of the display and the display is greater than L, the main controller controls the brightness adjustment system to enable the brightness of the display to be normal. The display brightness
control system belongs to the field of
electronic equipment.