LED chip lamp bead luminous principle: the terminal voltage of the PN junction forms a certain potential barrier. When the positive bias voltage is applied, the potential barrier decreases, and most carriers in the P and N regions diffuse to each other. Because the electron mobility is much larger than the hole mobility, a large number of electrons will diffuse into the P region, forming the injection of minority carriers in the P region. These electrons recombine with holes in the valence band, and the energy obtained by recombining is released in the form of light energy. This is the principle of PN junction luminescence.

 

LED chip bead packaging function: The research and development of packaging technology with low thermal resistance, excellent optical characteristics and high reliability is the only way for the industrialization of new LED towards practicality and market LED technology is mostly developed and evolved on the basis of semiconductor separation device packaging technology. The core of ordinary LED is sealed in the package, which is used to protect the chip and complete the electrical interconnection.

 

That‘s all about the principle of LED lamp beads and their packaging function. If you want to know more about LED lamp beads, please continue to pay attention to us!