Outdoor LED display screen has high brightness, high contrast, wide viewing angle, high gray and high refresh rate. The picture is still clear and bright under direct sunlight, and the display effect is natural and realistic. It is widely used in finance, taxation, industry and commerce, post and telecommunications, sports, advertising, factories and mines, transportation, education system, stations, docks, airports, shopping malls, hospitals, hotels, banks, securities markets, construction markets, auction houses, industrial enterprise management and other public places. It has the purpose of media display, information release, traffic guidance, creative display, etc.