1. LED is a semiconductor diode that can convert electrical energy into light energy. Like ordinary diodes, LEDs are all PN junctions and are also unidirectionally conductive. After a forward current is applied to the light-emitting diode, the holes injected from the P region into the N region and the electrons injected from the N region into the P region, at a few micrometers around the PN node, are respectively associated with the electrons in the N region. And the holes in the P region are recombined to form spontaneous fluorescence. In different semiconductor materials, electrons and holes are in different energy states.

2. Low power consumption: LEDs are low-voltage working devices, so under the same light intensity conditions, the power loss is minimal, which can significantly reduce energy consumption. Instead, future technologies and materials will improve its luminous efficiency. Some people estimate that the replacement of all street lights in Japan with LEDs can save two large power plants, which is very beneficial to environmental protection.

3. The light source is LED diode, which is a new type of light source technology. The heat dissipation effect of the LED light is very good, the conversion rate of the LED light is as high as 100%, the life is very long, and it is very convenient to use.

Extension; for home lighting. Many light-emitting diodes can replace screw-type or energy-saving lamps, and their power range is between 5-40 watts to 60 watts. Some lamps can also replace high-energy lamps, such as 13-watt lamps, which have the same light intensity as 100-watt hot incandescent lamps. LEDs are also colorful, but they consume less power and maintenance. White LED bulbs are currently the leader in the domestic low-end market, such as flashlights, solar garden lights, pedestrian lights, bicycle lights, etc. LED bulbs are mainly used to make traffic lights and festivals.