(1) Display unit

 

This is the main part of the full-color LED display screen, which is composed of light-emitting materials and driving circuit. The indoor screen is the unit display board of various specifications, and the outdoor screen is the unit box.

 

(2) Main Controller

 

The function is to buffer the input RGB digital video signal, transform the gray level, reorganize, and generate various control signals.

 

(3) Switching power supply

 

The purpose is to convert 220V AC into various DC currents and supply them to various circuits.

 

(4) Transmission cable

 

The display data and various control signals generated by the main controller are transmitted to the screen body by twisted pair cable.

 

(5) Scanning Controller

 

The function of the circuit board is to buffer data, generate various scanning signals and gray control signal of duty cycle.

 

(6) Special Display Card and Multimedia Card (Video Card)

 

In addition to the basic functions of the computer display card, the special display card for full-color LED screen also outputs digital RGB signals, line, field and blanking signals to the main controller. In addition to the above functions, the multimedia card can convert the input analog Video signal into digital RGB signal (i.e. video acquisition).

 

(7) Other signal sources and their external devices,

 

Including computers, TV sets, Blu-ray, DVD, VCD, video cameras and so on.