Large LED rental display screen is designed as a customized die cast aluminum box, with lightweight, thin, and fast installation as its most important characteristics. The lightweight box can be quickly installed, removed, and transported, making it suitable for large area rental and fixed installation applications. It adopts a synchronous control system for processing, and can accept various video input signals such as DVI, VGA, HDMI, S-video, composite, YUV, etc. It can freely play videos, graphics, and other programs, and broadcast various information in a real-time, synchronous, and clear information dissemination manner.