▎ 摘　　要

NOVELTY - Light emitting diode (LED) nano-black coating comprises a resin coating and nano-black particles dispersed in resin coating, the grain diameter of nano-black particles is 10-800 nm, the particle number of nano-black particles in unit area is 5-2500/um2 and the light transmittance of the LED nan black coating is 30-99%. USE - Used as LED nano-black coating. ADVANTAGE - The LED nano-black coating: has shielding effect on the PCB board of the bottom layer and the color of the LED chip; is good for the LED display module to present the visual effect of the whole black, when the LED display module works, the light emitting area and the non-light emitting area have good contrast and is good for the display of the image. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for LED display module, comprising a printed circuit board (PCB) board, an LED chip, packaging layer and the LED nano-black coating, the number of the LED chip is multi, the multi LED chip is set on the surface of the PCB board, the packaging layer is set on the surface of the PCB board and covers the LED chip and the LED nano-black coating is set on one side of the packaging layer away from the PCB board.