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What’s LED?

       With the advancement of technology and society, LED lights have been gradually into people’s lives, and its energy-saving and environmental protection features gradually replace the incandescent lamp. Now whether or home decoration market, we will choose the LED lamps, the LED lamps in the end what is it, why is it so popular with the public welcome?

 

        LED, which is the English light emitting diode (light emitting diode) abbreviation, and its basic structure is an electroluminescent semiconductor material chip, with a silver paste or white glue to solidify the bracket, and then connect the chip with silver or gold thread circuit board, then sealed with epoxy resin around, protect the internal core wire, the final installation of the housing, so the seismic performance LED lamps.

        Its light-emitting principle: LED heart is at one end of a semiconductor wafer, the wafer is attached to a bracket, one end is negative, the positive electrode and the other end connected to the power supply, so that the whole chip is epoxy encapsulated. The semiconductor chip consists of two parts, part of P-type semiconductor, the hole in it dominates the other end of the N-type semiconductor, here is mainly electronic. But when the two semiconductor connected to form a P-N junction between them. When the current through the wire act on the chip when the electron will be pushed to P zone electron hole recombination, and then will emit energy in the P region in the form of photons. The wavelength of light is the color of the light, it is formed by the material P-N junction decision.

        In addition to the LED lighting used in homes, but also widely used in urban roads and commercial buildings, such as: building exterior lighting, landscape lighting, logo and indication lighting, entertainment and stage lighting, LED vehicle lighting, and even video screen also many LED screens.
It will not be long, LED light will replace incandescent, human life has become an indispensable part.

 

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