What are the reasons for LED bead leakage?

There are several reasons for LED bead leakage:
1. Excessive height and thickness of the base adhesive can cause electrical leakage.
2. Improper process can cause chip cracking, such as excessive pressure on the magnetic nozzle during wire bonding due to improper operation of the wire bonding machine, resulting in chip damage and cracking.
3. Static electricity causes leakage in lamp beads, which is usually caused by friction and is a relatively easy cause of leakage. Therefore, when producing lamp beads, employees should be required to wear anti-static clothing and hats to minimize the occurrence of static electricity.
4. The chip itself has defects that cause leakage.
5. Chip contamination is a common and frequent issue. The reason may be due to not paying attention when using the chip, which may cause the chip to be contaminated with dust or water vapor. LED chips are very small things, and a slight lack of attention can damage the structure of the light beads, leading to leakage or dead lights. So this requires the factory to use a dust-free workshop, wear anti-static gloves when picking up chips, operators are not allowed to do makeup work, and hair should be tied up during work, among other requirements.
6. The wire was not properly soldered during the welding of the lamp bead, resulting in leakage of the lamp bead. For example, wire misalignment, virtual soldering, and improper setting of wire tension can all lead to the phenomenon of light bead leakage, which is also a common problem.