Performance requirements of LED electronic display screen

From the current practical application and the color matching of red and green, for the LED display screen of one red and four green, the red tube adopts the red of four elements and the green tube adopts the green of three elements. The photoelectric driving circuit of integrated components receives the digital signal transmitted from the computer to the distribution card and drives

From the current practical application and the color matching of red and green, for the one red and four green LED display screen, the red tube adopts the red of four elements and the green tube adopts the green of three elements. The photoelectric driving circuit of integrated components receives the digital signal transmitted from the computer to the distribution card to drive the brightness and darkness of the illuminant, so as to form the text or graphics we need. Is its quality reliable and stable, From the current operation of outdoor LED electronic display screen, the highest failure rate lies in the photoelectric driving part, because the quality of the selected integrated IC device directly determines the quality of the photoelectric driving part
The power supply of LED electronic display screen is required to ensure that the failure is less than 1% in 5 years. The quality of power supply depends on the screening of components and the quality control of power supply manufacturers. According to the dot matrix density, it mainly includes ordinary density and high-density LED electronic display screen. The density of display screen is related to the pixel diameter. The smaller the pixel diameter, the higher the density of display screen. In specific selection, the closer the viewing distance is, The higher the density of the display screen; The farther the viewing distance is, the density of LED electronic display screen can be appropriately reduced. The indoor standard is 8 × In the 8LED matrix module, φ 5mm and φ 3.7mm is the most common
Control mode LED electronic display is widely used. Different control modes can be adopted for different application environments and application requirements. Group display is suitable for situations where there are a large number of graphic screens and the content displayed on each screen is the same. It is uniformly controlled by the upper computer. Communication adopts broadcast mode: the upper computer sends signals, Each lower computer receives at the same time. When each LED electronic display screen needs to display different contents, it can be distinguished by the lower computer number. Only the lower computer that should receive the displayed data can continue to receive, while other lower computers ignore the subsequent data, so that each LED electronic display screen can display different contents
At the same time, there are infrared remote control. On some occasions, the display content of LED electronic display screen is relatively simple and the content changes infrequently. It can be considered not to use the upper computer. The lower computer stores some necessary display data by itself, and uses the method of infrared remote control, The content is selected by the personnel on duty on site. We can use the infrared remote control of the TV to transform it into the remote control of the display screen. In some applications of wireless remote control, the layout of LED electronic display screen is very scattered, The distance between screens may be very long. In this case, if the communication medium between the upper computer and the lower computer adopts wired mode, it may be uneconomical or unrealistic. At this time, wireless mode can be adopted for communication between the upper and lower computers. This is a lot of convenience and saves a lot of material and manpower consumption.