The LED light source is a light source with a light emitting diode (LED) as a luminous body. Light-emitting diodes are made of several thin layers of doped semiconductor materials. One layer carries excess electrons, and the other layer forms positively charged "holes" due to lack of electrons. When current passes, electrons and holes interact with each other. Combines and releases energy, thereby radiating light. The reason why people use light-emitting diodes for lighting is mainly to mix the red, yellow, and blue light emitted by the light-emitting diodes. In this way, after the red, yellow, and blue lights are "mixed", white light is produced, referred to as MCLED ( multi-chipLED); can also use "blue light technology" in conjunction with phosphors to form white light, called PCLED (phosphorconvertedLED), in addition to MOCVA direct growth of multi-active area white light technology.