The structure of the LED display includes LED lamp beads, circuit boards, masks and other parts. The LED lamp beads are the core part of the LED display and can emit LED light; the circuit board is the control unit of the LED display and can control the LED lamp beads. Control; the mask is the shell part of the LED display, which can protect the LED lamp beads and make the LED display more beautiful. The working principle of the LED display is to use the light emitted by the LED lamp beads to control the control circuit on the circuit board, so as to achieve the purpose of displaying information. The technical indicators of the LED display include brightness, contrast, color reproduction, clarity, etc. These indicators determine the display effect of the LED display.

 The application of LED display screen includes outdoor advertisement, indoor advertisement, digital advertisement, instruction navigation, data display, safety warning, entertainment display, conference display, dispatching command, etc. These applications require LED display screen to display relevant information.