The explosive growth of market demand has driven the heat of the large screen display industry. DLP rear projection, liquid crystal display, LED screen and other technologies have changed from one to another, driving a new round of competition in the large screen display industry. The fierce competition environment has also driven the product upgrade and market maturity of display technology itself. With the deepening of the development process of LED display screen and the improvement of market maturity, new weather has emerged in the demand for LED screen in the commercial market. The overall trend is that Classification refinement has begun to appear in the application fields of LED screens. The market segment has further driven the segmentation and evolution of LED display products. As we all know, as a representative of high-brightness large-size display, LED display screen almost has the status of outdoor display, and is usually defined as a large-size display product installed on the exterior wall of a building and at the top of a column. However, the development of technology and market requires LED screens to adapt to the new needs of diversified applications. Among them, the application of digital signage industry is a force that cannot be ignored. According to HIS, a research institution, the market revenue of digital signage will exceed 15. 1 billion US dollars in 2014, up over the previous year. Among them, the digital signage display, which accounts for a large share, will achieve a revenue of more than 6 billion US dollars by 2018, creating a good development opportunity for the commercial display industry. As the main carrier of outdoor media, LED display screen currently occupies more than 60 market shares, and its diversified application has gradually become a breakthrough for LED enterprises. In the past, the digital signage industry dominated by liquid crystal displays also embraced LED screens. The number of cases in which LED display screens are applied to shop windows, subway stations and chain restaurants is increasing. Compared with other display technologies, LED display screen, as a product of self-luminous technology, has inherent advantages of high brightness, low power consumption, long life, brilliant colors, etc. Compared with liquid crystal display, it is also easier to realize in terms of super-large size and special-shaped display, which can fully meet the complex display application requirements under the refinement process of application fields. The innovative development of the digital signage industry and the improvement of display requirements have highly coincided with the diversified development direction of LED display application fields. With the rapid development of the digital signage industry, the LED display industry will certainly benefit from it.