LED (light-emitting diode) lighting is a lighting fixture made using the fourth generation green light source LEDs. LED is known as the fourth generation of lighting light source or green light source, with energy saving, environmental protection, long life, small size and other characteristics, can be widely used in a variety of instructions, display, decoration, backlight, general lighting and urban night scene and other fields. Since 2000, some of the world's economically developed countries around the development of LED launched a fierce technical competition. The United States has invested 500 million of dollars to implement "National Semiconductor lighting program " Since 2000, and the European Union announced the launch of a similar "Rainbow plan " in July 2000. China's Ministry of Science and Technology, with the support of the "863" program, first proposed the development of semiconductor lighting program in June 2003.