Advertising display is a kind of display equipment used to show advertisements, usually used in outdoor advertisements, shopping malls, stations, airports and other places with high flow of people. There are many types of advertising display, including LED display, LCD display, LCD TV, etc. LED display, as a new type of imaging electronic equipment, has the advantages of high brightness, wide viewing angle and long service life, and is gradually being popularized and applied in outdoor advertising screen and other products.