Full color LED display is the most critical component of LED lamp beads.
There are three reasons:
First, LED is the full color screen machine used in the largest number of key devices, each square meter will use thousands to tens of thousands of LED lamp beads;
Second, LED is the main decision to determine the performance of the main screen, a direct impact on the audience's evaluation of the display;
Third, LED in the overall cost of the largest proportion of the display, ranging from 30% to 70%.
How to identify the advantages and disadvantages of LED display lamp beads
First, look at solder joints. Formal LED lights with manufacturers of LED lights with the use of SMT chip technology, with solder paste and reflow process production
Second, look at the quality of FPC. FPC is divided into copper and copper two kinds of copper, copper clad copper is protruding, look at the words from the pad and FPC to see the connection
Third, look at the LED light with the surface cleanliness. If the use of SMT production process LED lights, the surface cleanliness is very good, do not see any impurities and stains
Fourth, look at the LED lights with the chip and the production process, with the eyes can not see the difference, to use aging equipment and testing equipment If you put several manufacturers of LED on the aging device with high current aging 24 hours or longer Time, you go to measure the brightness of several manufacturers of LED, see that led light intensity attenuation minimum, the smallest attenuation that the best quality.