LED manufacturers don’t tell the truth completely, so they try to maximize the advantages of their products in commercial publicity, and deliberately avoid the disadvantages of avoiding normal operations with light weight. Only from the current market research and user feedback, LED displays have exposed faults. Frequent shortcomings, the shortcomings of frequent failures give users the feeling that users use the product normally and frequently maintain the product. The reason why the LED display frequently needs maintenance is that the LED display is prone to lamp bead defects (including bright spots, black spots, etc.), and the brightness attenuation and attenuation of the unit modules are not consistent. However, these lamp bead defects and unit module attenuation problems of the LED display are derived from its own production technology, so they can basically only be changed.
Take the ordinary P2.5_outdoor LED display as an example, the dot spacing between LED lamp beads is 2.5mm, and there are 160,000 LED lamp beads per square meter of outdoor LED display, which is obviously a product produced by precision processing technology. , The current production technology has very high requirements on the production line, but the current technology and technology face the problem of unit attenuation, although the manufacturer chooses the same batch of products for unified color adjustment when shipping, ensuring the color difference of the same batch of display units Reach the minimum value, but the same batch of screens also have very small chromatic aberration under the condition of all white screens, which is inevitable. Because the backlight parameters of each screen cannot be exactly the same, the deviation that people usually see, especially after the product is used for a period of time, as the brightness attenuation curve between different units is inconsistent, the color difference of the display screen becomes more and more serious.
