LED working principle.outdoor rental led scren wholesale

　　Figure 1 shows the luminous mechanism of LED. The light emitting diode consists of the potential area between area P, N zone, and the two. There are more caves in the P area, which can be used as a unit particle with positive electricity; The place where the barrier area is in the E -area of the P area and the electronics encounter in the N area, it can reach a certain balance without power power. When the positive current (that is, the input of DC stabilization power supply) at both ends of the PN end, the injected non -balanced carrier (electron -cave pair) compounds during the diffusion process.

　　Figure 2 shows that the luminous principle of the luminous diode can also be explained by the energy -band structure of the PN knot. The materials for making semiconductor emitting diode are mixed with impurities. There are many electrons with strong mobility in the N area under thermal balance, and there are more mobility acupoints with more mobility. Due to the limitations of the PN blocking layer, in normal conditions, the two cannot be naturally compounded. When a positive voltage is used for PN knots, electrons can absorb the energy of QVBI and become high -energy electrons, thereby breaking the obstacles of the PN knot enters the side of the P area; So where the PN knot is slightly on the side of the P area, it is in high -energy electronics and holes. The radiated energy is manifested in the form of light, which is the light from the LED we see.

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