Nowadays, LED display screens are everywhere, and the application fields are also very wide. We often see the colorful and dynamic commercial advertisements on the street, which is the effect of the display application, which brings fast and convenient information to our lives. The era of the era has also added a splendid color to the city’s environmental decoration.
As a new media, LED large screens use the illuminating graphics of sports, display a large amount of information, content can be updated at any time, and has very good advertising and notice effects, so it is more attractive to attract attention. So what components are the LED display made up of? Next, we will introduce it to everyone.
LED display mainly consists of the following components: LED unit board, wiring, power supply, control card.
First, the LED unit board: It is one of the core components of the LED display. The quality of the unit board directly affects the display effect of the display. The unit board is composed of an P3.91 LED module, a driving chip, and a PCB circuit board. The LED module is actually made up of a large number of LED light-emitting points made of resin or plastic package dot matrix.
Second, the connection: it can be divided into data lines, transmission lines and power lines. The data line is a cable for connecting the control card and the LED unit board. The transmission line is used to connect the control card to the computer. The power cord is used to connect the power supply and the control card and the LED unit board. The copper core of the power cord connecting the unit board has a diameter of not less than 1 mm.
Third, the power supply: the power supply is generally used for switching power supply, 220V input, 5V DC output. It should be pointed out that since the P3.91 LED display screen is a precision electronic device, a switching power supply is required, and a transformer cannot be used.
Fourth, the control card: We recommend the use of low-cost strip screen control card, you can control 1 / 16 sweep 256×16 point two-color screen, you can assemble the most cost-effective LED screen. The control card belongs to the asynchronous card, that is to say, the card can be powered off to save information, and the information stored therein can be displayed without connecting to the PC.