A light emitting diode (“LED”) backlight assembly. The LED backlight assembly has a bottom container which has a bottom plate and a side edge surrounding the bottom plate, a plurality of light emitting diode printed circuit boards (“LED-PCBs”) on the bottom plate, and a connector which is closely located to edge located LEDs. The connector of the LED-PCB is closely located to an LED driving board, which is disposed at a lateral space of a lateral part of the bottom container to limit a vertical thickness of the backlight light assembly.