LED dot matrix module technology: highlights and trends

LED dot matrix device is a lattice arrangement composed of multiple LED light-emitting diodes, representing each pixel. By operating the brightness and off of each pixel, text, images or animation content can be displayed.

The working principle of LED dot matrix module
Each LED is composed of a diode made of semiconductor within the LED matrix module. When current passes through the LED, the forward voltage causes electrons and holes in the semiconductor to meet, causing energy to be released in the form of light, producing visible light.

 In order to control the on/off state, the LEDs of the LED matrix module are controlled by circuits and drivers. The circuit is responsible for receiving external signals and converting them into control signals, while the driver provides appropriate current and voltage to ensure the normal operation of the LED.

 LED dot matrix modules usually use row and column scanning technology to control the on and off of LEDs. The technology quickly switches the state of each pixel by alternately scanning rows and columns. First select a row and apply voltage to that row's LEDs to light them up, then select the next row one by one and turn off the previous row's LEDs. By repeating this process, the display effect of the entire dot matrix module can be achieved.

Elements that make up the LED dot matrix module
  1. LED arrangement

LED dot matrix modules consist of an arrangement of multiple LEDs that are regularly arranged on a plane, usually divided into multiple rows and columns. Each LED represents a pixel, and by controlling the brightness and off state of each pixel, an image is presented.

  2. Control circuit and driver chip

The LED dot matrix module also includes a control circuit and a driver chip. The control circuit is responsible for receiving external signals and converting them into corresponding control signals, while the driver chip provides appropriate current and voltage to ensure the normal operation of the LED.

  3. Display screen panel

 In order to protect the LED and improve the display effect, the LED dot matrix module is usually equipped with a display screen panel. This panel is usually made of a transparent material, such as glass or plastic, and is used to cover the LED array to protect the LEDs and improve image clarity and visibility.

 4. Connectors and power supplies

The LED dot matrix module also includes connectors and power supplies for connecting the module to other devices and providing the required power. Connectors are usually electronic plugs or sockets used to connect modules to controllers or other modules. The power supply provides the required current and voltage to ensure the normal operation of the LED dot matrix module.