What is LED?

Writer： admin Time：2021-02-26 21:12 Browse：℃

LED is the abbreviation of the English word Light Emitting Diode, the Chinese name for the light-emitting diode, is a way to convert electrical energy directly into visible light semiconductor devices. (Structure shown below)
The heart of the LED, the LED chip is shown above, the one end of the LED chip attached to a bracket, one end of the negative electrode, the other end connected to the positive power supply, so that the whole wafer is epoxy encapsulated.
LED chips composed of two parts, the part of the P-type semiconductor, the hole in it dominant, the other end is an N-type semiconductor, in the side of the main electronics. But the two semiconductor linking between them to form a "PN junction. When the current through the wire to the LED chip, the electrons will be pushed to the P region, the P zone electron hole recombination, then will be issued in the form of photons of energy, which is the principle of LED luminous.