Generally, LED packaging must go through the processes of crystal expansion-die bonding-wire bonding-potting-foot cutting-spectroscopy and color separation, but in the LED packaging process, electrode contamination often occurs after die bonding, mainly as follows the reason:
1. The oven is stacked too densely and poorly ventilated.
2. The local temperature of the oven is too high.
3. There are other color pollutants in the oven.
solution:
Improve ventilation. Remove stains and confirm the actual temperature in the oven. Here, you can choose the Yeehexing clean oven, the HEPA filter structure clean room, 99.99% effective filtration, and the cleanliness reaches level 100. The high temperature resistant silica gel is tight, and the SUS304 stainless steel electric heat generator prevents the machine itself from generating fine dust. It is used in ordinary environments without worrying about other pollutants. Using forced ventilation, there is an air duct in the oven, the temperature uniformity is 1.5 ℃%, and the material is dried evenly.
