The basics of LED display

41 views admin 2024-08-14

LED display is a flat panel display, composed of a certain distance, a certain specification of light points, each light point is composed of a single LED light tube. It uses light-emitting diode as the display element, by controlling the display mode of semiconductor light-emitting diode, used to display text, image, animation, market, video, video signal and other information.

The working principle of the LED display is to use the characteristics of the light-emitting diode, through a certain control mode, the LED device is composed of an array, so as to form a display screen. Each LED represents a pixel, and the leds in the LED display are organized into different columns and rows to form a grid-like structure. When specific content is to be displayed, the desired image or text can be created by controlling the brightness and color of each LED. Controlling the brightness and color of the LED can be done through digital signals. The control system of the display will send the corresponding LED to control its brightness and color according to the input digital signal. In order to achieve high brightness and clear display effect, LED display usually uses PWM (pulse width modulation) technology, that is, by constantly switching the LED on and off state, to control the change of display brightness. LED display can also use full-color LED technology, that is, red, green, blue three different colors of LED together, can be through the combination of different brightness and color to display a colorful image.

LED display mainly consists of the following parts: LED unit board: This is one of the core components of LED display, which is composed of LED module, driver chip and PCB circuit board. Control card: Used to control the LED unit board, can control 1/16 scan 256x16 dots two-color screen, can be assembled to have a cost advantage of the LED screen. Connection: including data line, transmission line and power line. The data line is used to connect the control card and the LED unit board, the transmission line is used to connect the control card and the computer, and the power line is used to connect the power and control card and the LED unit board. The characteristics of LED display mainly have the following points: High brightness: The brightness of the LED display is high, and it can be used outdoors all day long, but also can be used indoors. Long life: LED display has a long service life, which can generally reach more than 100,000 hours. Large viewing Angle: The viewing Angle of the LED display is large and the viewing range is wide, and the audience can watch the screen from different angles. Flexible size: The size of the LED display can be designed according to needs, as small as less than one square meter, and as large as hundreds or thousands of square meters. Easy to interface with the computer: The LED display can easily interface with the computer, support a variety of software, can display text, images, videos and other information.