1. The primer is too high and too thick to cause leakage.

2. Improper process causes chip cracking, etc. For example, when the lamp bead is soldered, due to the improper operation of the wire bonding machine, the pressure of the nozzle is too large when the wire is soldered, resulting in damage to the chip and cracking of the chip.

3. Static electricity causes lamp beads to leak. Static electricity is usually caused by friction. This is also the reason why it is easier to leak electricity. Therefore, when producing lamp beads, employees should be required to wear electrostatic clothing and electrostatic caps to minimize the occurrence of static electricity.

4. The wafer itself has defects, resulting in leakage.

5. The wafer has been contaminated, which is a common problem and a very common problem. The reason may be that the chip is not paid attention to when using it, so that the chip is stained with dust or water vapor, etc. The LED chip is a very small thing. A little carelessness will destroy the structure of the lamp bead and cause the lamp bead to leak Or dead lights. Therefore, this requires the factory to use a dust-free workshop, wear anti-static gloves when taking chips, operators are not allowed to do makeup work, and hair should be coiled up during operations, and a series of requirements.

6. When the lamp bead is welded, the wire is not welded well, which causes the lamp bead to leak. For example, the wire is misaligned, the welding is false, and the tension of the welding wire is not set properly, which will cause the leakage of the lamp beads. This problem is also relatively common.