In recent years, the LED market has been growing at a high speed and has gradually replaced incandescent lamps, fluorescent lamps and other lighting sources. The penetration rate has continued to increase rapidly, according to the data of 'LED lighting industry market outlook and investment Strategic Planning Analysis Report' released by prospective Industry Research Institute, the LED penetration rate reached 36. 5% in 2017. 7, up 5 from 2016. 40 LED lighting products are lighting appliances manufactured by using light emitting diodes as light sources. They are characterized by high efficiency, energy saving, environmental protection, easy maintenance, etc. They are effective ways to realize energy conservation and emission reduction. Under the background of energy shortage, LED lighting will gradually become the mainstream product in the lighting field. Another revolution of lighting sources in the history of lighting after incandescent lamps and fluorescent lamps. In recent years, the LED market has been growing at a high speed and has gradually replaced incandescent lamps, fluorescent lamps and other lighting sources. The penetration rate has continued to increase rapidly, according to the data of 'LED lighting industry market outlook and investment Strategic Planning Analysis Report' released by prospective Industry Research Institute, the LED penetration rate reached 36. 5% in 2017. 7, up 5 from 2016. 40. LED lighting penetration rate, with the rapid development of LED lighting technology, the performance indexes of LED lighting products such as stability, service life, intelligence, finger display, light efficiency, etc. gradually remain stable, reaching the customer acceptance state, the application of the product market continues to improve. The prospective database shows that the LED lighting market reached 34. 6 billion US dollars in 2016, up year on year. 8. LED lighting market scale (Unit: million US dollars) With the introduction of a road map for the elimination of incandescent lamps abroad, China has gradually accelerated the pace of eliminating inefficient lighting products. On October 2011, the National Development and Reform Commission officially issued the 'China's road map for phasing out incandescent lamps' and set the transition period from October 1-20, 2011 to September 30. By 2016, incandescent lamps of various wattage will be completely banned from being sold on the market. In 2016, the State Council issued the 13th five-year national strategic emerging industry development plan, which clearly proposed to promote the research and development and industrialization of key technologies in the fields of intelligent sensors, power electronics, printed electronics, semiconductor lighting, inertial navigation, etc. 2014- In 2016, the output value of domestic LED lighting applications grew rapidly, and the domestic market penetration rate of LED lighting products ( Domestic sales of LED lighting products/total domestic sales of lighting products)It reached 42, up 10 from 2015. The substitution effect of LED on the traditional lighting market has greatly stimulated the demand of the semiconductor lighting market, and the domestic semiconductor lighting industry is expected to usher in key development opportunities. China's LED lighting market is expected to exceed 461. 4 billion yuan by 2020. LED application market scale and LED lighting application proportion in China