Helios, a smart LED screen, can be debugged easily and quickly, solving the problems of complicated operation and large gaps in splicing LED screens. The stitching of straight and arced edges can be completed in two quick steps in a single installation, saving 50% in human and material resources. The new COB encapsulation technique can fully protect the modules of lamp beads. The power box can power off quickly for maintenance. The screen is 60 times better in heat dissipation performance than a traditional box, extending its service life more than tenfold.