LED (LightingEmittingDiode) lighting is a light-emitting diode lighting, is a semiconductor solid light emitting device. It is the use of solid semiconductor chip as a luminous material, in the semiconductor through the carrier composite release excess energy and cause photon emission, directly emit red, yellow, blue, green light, on this basis, the use of the principle of three primary colors, add phosphor, can emit any color of light. The lighting appliance made of LED as a light source is LED lamps.