Led display mainly consists of the following components: led unit board, wiring, power supply, control card.

1. LED unit board

It is one of the core components of LED display. The quality of unit board directly affects the display effect of the display screen.The unit board is composed of LED module, driver chip and PCB.LED module, is actually a lot of LED light points with resin or plastic packaging dot matrix.

2. Signal line and power line

It can be divided into data lines, transmission lines and power lines.Data cables are the arrays used to connect the control card to the LED panel.A transmission line is used to connect the control card to the computer.The power cord is used to connect the power supply, control card and LED panel. The copper core diameter of the power cord connecting the panel is not less than 1mm.

3, the power supply

The general use of power supply is the switch power supply,220V input,5V dc output.It should be pointed out that the led display screen belongs to the precision electronic equipment, so switch power supply should be used instead of transformer.

4: control card

We recommend the use of low-cost strip control card, which can control 1/16 sweep of 256x16 dot two-color screen, and can assemble * LED screen with cost advantage.The control card is an asynchronous card, which means that the card can save information without power, and can display information stored in it without connecting to a PC.