The invention relates to the technical field of
liquid crystal display, in particular to a backlight module and a
liquid crystal displayer. The backlight module sequentially comprises a
printed circuit board, a reflector plate, an LED
light source and a
diffusion plate from bottom to top. First protruding points are arranged on the light-in face, facing the LED
light source, of the
diffusion plate and around the projection, within the light-in face, of the LED
light source. The first protruding points can conduct reflection
diffusion on an illumination area, on the diffusion plate, of the LED light source, eliminate projection dark spaces and prevent light source gathering, so that the distribution of a light-emitting area on the diffusion plate is more uniform. Meanwhile, the LED light source can be independently controlled, local
light control can be better achieved, and accordingly the display quality of a high-dynamic-comparison image is improved. The reflector plate can reflect leaking light again so that the light can irradiate the diffusion plate again, accordingly the
utilization rate of the light source is increased, the light mixing distance is increased, and
thinning design of the
liquid crystal displayer is achieved easily.