The l-screen is a complete screen made up of a vertical screen and a floor screen, while the sky screen is a ceiling mounted form for displaying some unconventional video content, through the integration of software, three-dimensional processing system and intelligent central control system to model data into digital display, to bring a real and fantastic experience and a good sense of vision. Therefore, it can also be classified as an innovative form of display, can be widely used in urban planning, Digital Exhibition Hall and some creative Mapping show