“Energy saving and emission reductionâ€, the development of green light source is an important part. Do our lights have green alternatives? Not long ago, the "2007 China International Semiconductor Lighting Forum and Exhibition" provided an answer. The reporter specially visited Guo Yansheng, deputy director of the Shanghai Municipal Science and Technology Commission, and director of the Shanghai Semiconductor Lighting Engineering Center. Learn about semiconductor lighting projects.
Thousands of years ago, when humans raised the first torch, humans had their own source of light. In 1879, Edison invented the first incandescent lamp, and at the same time as the second revolution in lighting, Officially opened the curtain of modern human civilization. Semiconductor lighting has brought about a revolution in the field of lighting, which will further promote the development of modern human civilization.
As a new type of green light source, the advantages of semiconductor lighting (ie LED) are reflected in three aspects: energy saving, environmental protection and longevity. LED does not rely on filament heating to emit light, energy conversion efficiency is very high, theoretically can achieve 10% energy consumption of incandescent lamps, compared to fluorescent lamps, LED can also achieve 50% energy-saving effect. In terms of service life, the LED is solid-packed and has a firm structure with a life of 100,000 hours, 10 times that of fluorescent lamps and 100 times that of incandescent lamps. In terms of environmental protection, LEDs are used instead of fluorescent lamps to avoid secondary pollution of mercury rupture in fluorescent tubes.
Because of the many advantages of this kind of light source, the United States, Japan, Europe, and South Korea have developed corresponding national semiconductor lighting plans. The Chinese government also launched the National Semiconductor Lighting Project in 2003. The Ministry of Science and Technology of China led the establishment of the “National Semiconductor Lighting Project Coordination Leading Group†across the department, across regions and across industries, actively promoting the development of the semiconductor lighting industry and promoting semiconductors. Lighting applications.
Guo Yansheng introduced that the China Green Lighting Project Promotion Project Office has conducted a special investigation. China's lighting power consumption is more than 300 billion degrees per year. Replace all incandescent lamps with fluorescent lamps or partially replace fluorescent lamps with LEDs, saving 1/3 of lighting power. The saving of 100 billion kWh is equivalent to the annual power generation of the Three Gorges Project with a total investment of more than 200 billion yuan. This is undoubtedly of great significance to China, where energy is very tight. Similarly, the US Department of Energy has a similar forecast. By 2010, if half of the incandescent lamps in the United States were replaced by LEDs, the electricity savings would only reach $35 billion.
China will promote semiconductor lighting projects from both aspects of guiding and cultivating industries. At the same time, five industrial bases will be established in Shanghai, Dalian, Nanchang, Xiamen and Shenzhen. According to the Shanghai Municipal People's Government Document No. 1 "Shanghai Medium and Long-term Science and Technology Development Plan (2006-2020)", Shanghai should master the core technologies of all aspects of the semiconductor lighting industry by 2020, and develop independent intellectual property rights. The semiconductor lighting terminal application products form the Shanghai green lighting technology industry chain.
Guo Yansheng told the reporter that the Shanghai Semiconductor Lighting Engineering Technology Research Center (hereinafter referred to as the Engineering Center) is a research and development and public service organization that combines production, study and research under the leadership of the Shanghai Municipal Science and Technology Commission and the Shanghai Pudong New Area Science and Technology Commission. As the carrier of the national industrialization base of the national semiconductor lighting project, the center is responsible for the technical support of the industrialization base. By continuously improving the connection and cooperation between R&D, production and application, it integrates talents, technologies, equipment and other resources. The research and development of relevant research institutes and small and medium-sized enterprises in the field of semiconductor lighting will build a high-level open technical support service platform, reduce the cost of technological innovation, promote the improvement of the energy level of the Shanghai semiconductor lighting industry, and fully promote the development of the national semiconductor lighting industry.
Through a series of scientific and technological research, in recent years, Shanghai has achieved many technological breakthroughs in the field of LED lighting. In addition to winning a number of scientific and technological achievements awards, Shanghai has also established more than 100 national, industry and internal standards for the optical industry. The city has formulated preferential policies to promote the development of Shanghai's semiconductor lighting industry. The research funding invested by the Municipal Science and Technology Commission has increased year by year since 2005, reaching 20 million yuan this year. Foreign technical teams such as Japan and the United States have also been attracted to Shanghai.
At the Shanghai 2007 Special Olympics, which was just closed recently, countless viewers saw a full-color screen with an effective area of ​​400 square meters and a pixel density of 3,906 points/┫, which is the largest display screen in China so far. The unit is one of the members of the Shanghai Semiconductor Lighting Engineering Technology Research Center.
Interestingly, incandescent lamps were unveiled at the 1879 Expo, and semiconductor lighting will be illuminated at the 2010 Shanghai World Expo. On the one hand, it replaces some traditional light sources. On the one hand, many new lighting functions, such as intelligent lighting and simulated ambient light sources, will be applied to the 2010 World Expo, announcing that human beings have entered a new era of lighting.
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