LED display principle

LED display principle

 

LED display principle

 

With the development of LED technology, the brightness of LED electronic displays is getting higher and higher, and the size is getting smaller and smaller, and pixels are a unit. Normally, this is invisible to the naked eye. If you zoom in on this effect several times, you'll find a lot of small square dots, and these bottom dots are actually called pixels. So what is the principle of Shenzhen LED display pixels?

 

A pixel is a unit used to measure a digital impression. Like photographs, digital impressions have continuous shadows. If you zoom in on the impression a few times, you'll see that these successive colors are actually made up of small square dots near many colors. Shenzhen LED display is divided into single-color Shenzhen LED display, two-color Shenzhen LED display and full-color Shenzhen LED display. Red, green, and blue are the primary colors. Achieving monochrome is simple. But there aren't actually a lot of red lights. In this way, a red LED light is a pixel. Shenzhen LED display is also very simple, and you can choose two of the three colors to achieve it. But the two-color Shenzhen LED display screen can display red, green and yellow at the same time. Because when red and green are bright at the same time, yellow is produced. A full-color display comes in a lot of colors, and it combines red, green, and blue lights to create pixels.

 

In addition, the pixels of the full-color display are displayed in real pixels and virtual pixels. These two techniques are different. Virtual display using virtual pixel technology, that is, the use of LED multiplexing technology, the same LED tube, can be adjacent LED tube combination 4 times (down, down, left, right combination) through the above introduction to understand what is Shenzhen LED display pixels, through the use of three types of display colors, it is not difficult to understand the principle of Shenzhen LED display pixels. Shenzhen LED display screen is a set of light-emitting diode dot matrix modules. Text, video, and pictures are edited by the computer and sent to the Shenzhen LED display control card. Transaxial imaging.

 

The main component of the display screen is a metal structure frame, and its function is to form an inner frame, which is equipped with circuit boards such as display unit boards or modules and switching power supply display units: it is the main component of the display screen, which is composed of LED lights and driving circuits. The indoor screen is a unit display board of various specifications, and the outdoor screen is a module box. Scanning control board: The function of the circuit board is data buffering, generating various scan signals and duty cycle grayscale control signals. Switching power supply: converts 220V alternating current into various DC and provides various circuits. Transmission cable: The display data and various control signals generated by the main controller are transmitted to the screen through twisted pairs. Main controller: buffer, gray transform, reorganize the input RGB digital video signal, and generate various control signals. Special graphics card, multimedia card: In addition to the basic functions of the computer graphics card, it also outputs digital RGB signals and line, field and blanking signals to the main controller. In addition to the above functions, multimedia can also convert the input analog video signal into a digital RGB signal (i.e., video capture).