LED (light-emitting diode) lighting is the use of the fourth generation of green light source led by a lighting lamp. LED is called the fourth generation of lighting or green light source, with energy-saving, environmental protection, long life, small size and so on, can be widely used in a variety of indicators, display, decoration, backlight, ordinary lighting and urban night and other fields.
Starting from 2000, some developed countries around the world led the development of a fierce technical competition. The US has invested $500 million in the National Semiconductor Lighting program since 2000, and the European Union announced a similar "rainbow plan" in July 2000. China's Ministry of Science and Technology, supported by the "863" programme, first proposed the development of a semiconductor lighting programme in June 2003.
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