Large outdoor full-color LED display screen has become a new force in the media. Full-color LED large screen screen has always been an important part of the development of LED field and an important part of large-scale entertainment, sports events and Square theme display. with the application of new technology, new forms of outdoor advertising continue to emerge, outdoor advertising full-color LED display media should be born. Of all the advertising media, outdoor advertising is an ancient form of media. It was born and rooted in cities at the same time as trade. It is closely related to the economic, cultural and social life of urban people. It is the media of brands and products, it is also a bright symbol of the prosperity of the city. These characteristics form the irreplaceable value of outdoor media. At present, the world's demand for energy-saving, lightweight, miniaturized and highly reliable products is extremely urgent, and LED display screens fully meet these conditions. LED is an all-solid cold light source, smaller, lighter and stronger, with a working voltage of only two volts and a service life of more than ten years. According to the usual definition of luminous efficiency, the luminous efficiency of LED is not high, but since the spectrum of LED is almost entirely concentrated in visible light frequency band, the efficiency can reach 80-90. LED display devices have been in existence for more than 20 years. Due to the adoption of raw materials and technological limitations, it is difficult to popularize them in the first 10 years. After entering the 1990s S, with the continuous improvement of technology and the development of raw materials, LED display devices have developed by leaps and bounds in terms of service life and brightness indexes, and the cost has also been greatly reduced. Full-color LED display screen is not just an extension of outdoor media and TV media, it has a larger creative space and a wider three-dimensional space for interaction and communication with consumers, which can meet personalized needs. with the concept of communication in the digital age, it is a kind of screen form. LED display screen is the inevitable direction of future lighting, advertising and other industries.