How to identify the advantages and disadvantages of LED display lamp beads
First, see solder joints. The regular led light with manufacturer's led light strip is produced using SMT patch process, using solder paste and reflow soldering process
Second, look at the FPC quality. FPC is divided into copper and rolled copper. The copper foil of the copper is protruding. If you look closely, it can be seen from the joint between the pad and the FPC.
Third, see the cleanliness of the led light with the surface. If the LED light strips produced by the SMT process are used, the surface cleanliness is very good and no impurities and stains are visible.
Fourth, to see the led light chip and production process, with the eyes can not see the difference, use aging equipment and testing equipment if you put a few manufacturers of led on aging instrument with high current aging 24 hours or longer Time, you go to measure the LED brightness of several manufacturers, to see that LED luminous intensity attenuation is the smallest, the smallest attenuation of the best quality.
