Semiconductor lighting led to the third revolution in lighting

Semiconductor lighting led to the third revolution in the field of lighting. In the late 1990s, the breakthrough of the third-generation semiconductor material GaN technology led to the third revolution in the field of lighting, which is based on solid-state lighting (also known as "semiconductor lamp") based on semiconductor light-emitting diodes (LED). Instead of incandescent and fluorescent lights, it enters the field of general lighting. Semiconductor lighting uses semiconductor chips as luminescent materials, has high photoelectric conversion efficiency, and has the advantages of energy saving, environmental protection, long life, and the like, and can be applied to various fields such as indicating illumination, decorative lighting, backlight, and general illumination.

Countries around the world attach importance to promoting LED development strategy. Countries around the world attach importance to the semiconductor lighting industry. For example, the United States has developed a series of plans and policies to support the development of the semiconductor lighting industry with the Ministry of Energy as the main promotion unit for the development of the semiconductor industry. With the joint efforts of governments and enterprises, global LED technology has developed rapidly and the efficiency of electro-optical conversion has been continuously improved. High-brightness LEDs are becoming more practical as the future direction of LED technology development.

The global LED industry is growing steadily The global semiconductor lighting industry is growing rapidly. In 2005, the global LED market reached US$5.73 billion. In 2001, the average annual growth rate of the LED application market outside the mobile phone was about 22%. At present, the global LED industry has formed a three-pronged pattern of the United States, Asia and Europe. Japan and the United States are relatively leading technologies, and Europe has a comparative advantage in the field of application. The LED industry in Taiwan and South Korea has risen rapidly in recent years.

China's LED industry has developed rapidly, and the industry chain has basically formed China's emphasis on semiconductor lighting development strategy. The green lighting project has been listed as one of the top ten key energy-saving projects in the “Eleventh Five-Year Plan”. The Ministry of Science and Technology initiated the “National Semiconductor Lighting Project”. In recent years, China's LED industry has developed faster than the global average. Among them, the packaging industry with lower technical content has developed rapidly and has a certain scale. At present, China's LED industry chain has gradually extended to the upstream areas with high technical content and added value such as epitaxial wafer and chip production, and the upstream, middle and downstream industrial chains have basically formed. At the same time, the proportion of high-brightness LEDs in LED production and application in China has gradually increased. In general, there is a big gap between China's LED technology and foreign countries, and it is necessary to deal with a series of problems such as patent blockade.

The initial formation of China's LED industry clusters has initially formed four major LED industry regions in the northern regions such as the Pearl River Delta, the Yangtze River Delta, the Delta, Beijing and Dalian. At the same time, under the impetus of “National Semiconductor Lighting Project”, the national semiconductor lighting engineering industrialization bases in Shanghai, Dalian, Nanchang, Xiamen and Shenzhen were established. The LED enterprises represented by Dalian Luming, Xiamen Sanan, Jiangxi Lianchuang Optoelectronics, Shenzhen Fangda Guoke, Shanghai Blu-ray, and Hangzhou Silan Mingxin have grown rapidly.
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