LED display is a new type of display technology. It has the advantages of high brightness, high contrast, high definition, and long life. Therefore, it has been widely used in advertising, information release, and stage performances. However, many people may not understand what the working principle of the LED display is. Let's introduce it in detail.

1. The components of the LED display

LED display usually consists of the following parts:

(1) LED lamp beads: LED lamp beads are the core components of LED display screens, which are responsible for generating light and displaying images.

(2) Drive circuit: The drive circuit converts the power supply voltage into a voltage and current suitable for the LED lamp bead to control the working state of the LED lamp bead.

(3) Control system: The control system is used to control the working state of LED lamp beads, including parameters such as brightness, color, and scrolling speed.

(4) Cabinet: The cabinet is the shell of the LED display, which plays a role in protecting the internal components.

2. Working principle of LED display

The working principle of the LED display can be simply summarized as: by controlling the working state of the LED lamp beads, the image display is realized. Specifically, it works as follows:

(1) Input signal: The LED display needs to receive external input signals, such as video signals or picture signals sent by computers, mobile phones and other equipment.

(2) Signal processing: After receiving the input signal, the control system will process the signal, including decoding, amplification, filtering and other operations.

(3) Drive circuit: The processed signal will be transmitted to the LED lamp bead through the drive circuit, and the drive circuit will convert the power supply voltage into a voltage and current suitable for the LED lamp bead to control the working state of the LED lamp bead.

(4) Light output: After being controlled by the drive circuit, the LED lamp beads will generate light to form images or characters. Different colors of LED lamp beads can achieve different color effects through different control methods.

(5) Refresh rate: In order to ensure the fluency and clarity of the image, the LED display usually has a relatively high refresh rate, generally 60Hz or above.

In short, the working principle of the LED display is to realize the display of images by controlling the working state of the LED lamp beads. Its core component is the LED lamp bead, and the control system is the key component to control the working state of the LED lamp bead. With the continuous development and improvement of technology, the application range of LED display is also expanding.