Micro-spacing LED display screen module based on grating lens

The invention relates to a micro-spacing LED display screen module based on grating lenses, and belongs to the technical field of LED display screens. Comprising three high-power R, G and B LED single lamps, a grating lens, a light valve array, a rear panel and a front panel, the light valve array comprises M rows * N columns of light valves, each light valve comprises three sub light valves which are arranged in parallel and can be independently controlled, the three sub light valves correspond to R, G and B colors respectively, and the output intensity of sub light paths can be controlled; the three grating lenses respectively correspond to one LED single lamp, N slits are manufactured in the grating lenses to divide light emitted by the LEDs into N thin and long light paths, the light paths are respectively projected to a column of sub-pixels of the light valve array, and the light tends to be uniform; the three grating lenses respectively project light to different sub light valves of each light valve of