As an important carrier of indoor and outdoor advertising, LED display has a natural connection with advertising media. The survey found that in the past year, although the share of LED display in the outdoor application commercial market has shown a growth trend, the growth driver is not the increase in the number of screens, but the value-added of the original screens. According to the statistics of the authoritative research organization HIS, the global digital signage market revenue exceeded 15.1 billion U.S. dollars in 2018, an increase of 6% over the previous year. Among them, the digital signage display that occupies the largest share will achieve more than 6 billion U.S. dollars in revenue by 2021, creating a good development opportunity for the commercial display industry. This means that with the increase in application commercial market demand, the traditional business model is no longer able to promote the sustainable development of the industry. If the LED display industry wants to grow steadily, it must take a refined route and refine its applications. The development of the indoor application commercial market and the heavy investment in digital signage by display manufacturers are just a new attempt to this kind of change. LED advertising machine is also another mode for LED screen to penetrate into the field of digital signage The development of technology and the continuous improvement of market awareness have made the outdoor application of digital signage a trend, and the market scale has expanded rapidly. Related agencies predict that
