The utility model is applicable to the technical field of display, and particularly relates to a backlight driving
system, a display
system and a display. The backlight driving
system comprises a
system controller, a switch
time sequence controller and N driving
chip cascade branches, each driving
chip cascade branch comprises M driving chips which are connected in series, the driving chips are used for controlling
LED lamp beads connected with the driving chips, each driving
chip is in duplex communication, the
system controller is connected with the switch
time sequence controller, and the switch
time sequence controller is connected with the N driving chip
cascade branches. The switch time sequence controller is respectively connected with the first driving chip of each driving chip cascade
branch through a corresponding interface, the switch time sequence controller is in duplex communication, and by setting a one-input multiple-output or multiple-input multiple-output
signal transmission mode of one switch time sequence controller, communication
signal lines of the driving chips are reduced under a direct-driven display system, and the display efficiency is improved. According to the technical scheme, all driving chips do not need to be connected in series, physical line
delay control can be achieved through the switch time sequence controller, the black frame
insertion function is achieved, and therefore the reliability of a display system is improved.