STB is different from the traditional transparent led screen. The product has the characteristics of ultra-thin, high-definition, high brightness and high penetration. When playing holographic video or 3D video, the human eye naturally integrates the scene in front of the screen and behind the screen with the picture in the screen, forming a strong sense of three-dimensional suspension. Since the screen body lights up for the screen, the light is transparent, there is no physical presence, and t