n recent years, LED displays have been widely used in various indoor and outdoor scenarios such as outdoor large-screen displays, command centers, conference rooms, and multimedia classrooms. Currently, a new application of LED display is in cinema screens.
Movie screens need to ensure a good sound experience, that is, the display screen is required to meet a certain sound transmittance. Conventional LED movie screens use fully sealed cabinets with almost no sound transparency, making it impossible to install speakers behind the screen, resulting in large sound and image deviations and poor sound effects. And the larger the picture area, the more obvious this defect is. Therefore, sound transparency is an important feature of LED display screens used as cinema screens.

