2011年11月21日星期一

About the mechanism of light-emitting LED light source


Now, with the LED industry supply with mature, low barriers to entry, a large influx of small businesses, resulting in excess of the LED bulbs, and because its production capacity utilization rate is low, certainly compete in the market giant Philips brand (Philips), Osram (Osram) and GE, these manufacturers through vertical integration or strategic alliance layout, the main active occupation of LED lighting market. Whether exploited or through gross margin much larger rivals, small factories and thus escape the huge market pressure.
China has rich resources of non-ferrous metals, gallium, indium-rich, the world's total reserves of 70% -80%, which makes the development of semiconductor lighting industry in China has the advantage of resources. By 2010, the Chinese LED industry output will exceed 150 billion yuan. As early as 2002, Japan spent ¥ 5 billion to implement white light illumination, the program's budget of 60 billion yen.
With the rapid growth of LED penetration, along with the price war will come in 2010, because unlike the traditional lamp and LED downlight source separate from the sales model, in this pressure, some companies can not take into account quality and price competitiveness, may will fall to the merger or be doomed.
May 7, 2010 -12, Henan Province, lighting, lighting experts and entrepreneurs learn to organize his party visited Japan Japanese lighting situation, found that Japan's current situation is not satisfactory LED lighting.
In recent years, in light of the most interesting event is the rise of the semiconductor lighting. The mid-1990s, Japan's Nichia Corporation Nakamura, who through unremitting efforts, broke through the manufacture of blue light-emitting diode (LED) of the key technologies, and thus developed a fluorescent material to cover the blue LED technology produces white light source .
led the LightEmittingDiode (light emitting diode) acronym. New solid-state light-emitting diode is a cold light source, LED's most notable feature is the long life, high photoelectric conversion efficiency, good seismic performance, ease of use in the lighting system more widely. Under the same illumination, LED tube and power consumption than incandescent and fluorescent lifetime have clear advantages.
White light of various methods of development, and development of next-generation phosphors, LED luminous efficiency has led to a substantial increase in current industrial products from 45lm / w up to 100lm / w (2009, Cree's cold white light efficiency when at 350mA over 100lm / W, while the warm white light is more than 75lm / W), the level of research 160lm / w, the highest level of expectations of the target 200lm / w or more. Life of 40,000 to 80,000 hours.


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