The working principle of LED full color display is mainly to realize the display of images or text by controlling the brightness and color changes of semiconductor light-emitting diodes (LEDs). Specifically, the working principle of LED full color display can be divided into the following steps:
First of all, LED display screens are usually composed of multiple LED lamp beads, which can emit light in three colors: red, green, and blue. These lamp beads are combined in a certain arrangement to form a complete display panel.
Secondly, when a certain pixel needs to be displayed, the control system will send a control signal to the LED lamp bead at the corresponding position based on the pixel information of the image or text. The control signal contains information such as brightness and color that needs to be displayed. This information will be transmitted to the LED lamp beads in the form of current or voltage.
Then, after receiving the control signal, the LED lamp beads will adjust their brightness and color according to the requirements of the signal. When all pixels receive corresponding control signals, the entire display screen will display a complete image or text.
In addition, in order to achieve better display effects, LED full color display usually uses some special control technologies. For example, PWM technology can control brightness by adjusting the switching frequency of LED lamp beads; color mixing technology can combine LED lamp beads of different colors to form richer colors; dynamic contrast technology can improve the display by automatically adjusting the brightness and darkness. Effects etc.
In general, the working principle of LED full color display is to use the characteristics of semiconductor light-emitting diodes to adjust the brightness by controlling changes in current or voltage, and to achieve color changes through the combination of LED lamp beads of different colors, and finally present Produce high-definition, high-brightness color images or text. LED full color display has the advantages of high brightness, low power consumption, long life, light weight and easy installation, so it has been widely used in billboards, commercial displays, stage backgrounds, information release and other fields.
