Continuous innovation and development, not only the display effect or shape of the display, its corresponding control system, operating mode and so on, increasingly intelligent development. Control system, from the earlier Sync control system, to the recent years of the asynchronous control system, to the present remote control, mobile phone wireless control, and so on, LED display control method changes more simple; Maintenance methods also from the rear maintenance, to the former maintenance, now some enterprises are introduced intelligent front maintenance-with software control can, No more manual brute force disassembly, convenient maintenance, but also protect the screen body. In addition, the previous LED display is mostly used in outdoor large-screen display field, away from the viewing crowd, and thus its functional needs are only shown primarily. However, with the increasing use of LED display, and the rapid development of the world-wide intelligent technology, the demand for interactive performance of LED displays has become a matter of course. such as LED floor tiles screen, in order to achieve a better digital choreography effect, people, screen interactive performance is also necessary, LED induction tile screen also emerged. As mentioned earlier, in the field of indoor display, LED poster screen, LED mirror screen, LED TV and other products will be more and more widely used, and the current indoor advertising machine, intelligent shopping and other multi-functional service equipment, such as the need for more and more prominent, which will also make the touch screen and other interactive more powerful functional demand. And, small spacing products often with LCD products, but compared to the LCD touch screen technology mature, LED display in this aspect of the lack of technology, undoubtedly its interaction is also disadvantaged, difficult to meet people's initiative to obtain information needs. So the interactive performance of touch screen and face recognition will be one of the key points of future development.