"Technically speaking, from manufacturing, LED lighting products that are more complex than many conventional lamps, which covers the semiconductor, lighting and cooling materials, structures and other industries, is a cross-industry product." LED development of the national high-tech enterprise Professional Committee Hao Zheng Wen told reporters, LED industry chain is longer, from the upper reaches of the substrate material, extension, and the application of the chip to the device package, covering the semiconductor industry and the lighting industry, is the interdisciplinary integration of the industry.
LED industrial distribution from the domestic point of view, China's LED industry is extremely uneven. NDRC statistics show that in 2008 total output value of China's semiconductor lighting nearly 700 million, of which 1.9 billion chip output, 18.5 billion package, applications, the output value of 45 billion yuan, chip, package, and application of the ratio of output to 1 : 9:22.
In other words, in the LED industry, behind the hot investment, is to face an awkward fact, the domestic enterprises in the LED epitaxial wafers, chips and other key upstream lack of voice.
The data from China Lighting Association shows that in the LED industry chain, epitaxial wafers and chips accounted for 70% of the profits, while the LED encapsulation and application while only 30% of the profits. Current wafer production has complete control in the hands of foreign enterprises and domestic enterprises do not have one to achieve volume production of epitaxial wafers. Chips, the domestic enterprises are mainly concentrated in small areas of low-end power, there in the field of high-power high-end technology, production, quality and other issues.
Outstanding effort for the lighting
Currently, LED white LED in particular the development of very fast, light efficiency has exceeded some of the existing light sources, such as incandescent, fluorescent and so on. LED landscape lighting, and street lighting in progress is also very fast, thanks to technological progress in this regard, it also benefited from the LED prices declining. With the global concept of energy conservation and emission reduction deepening, LED energy-saving environmental protection will also play an increasingly important role.
China Association of Lighting experts pointed out that the LED industry in China and abroad have a significant difference is more focused on our outdoor LED lighting, doing the best and most successful is that landscape lighting, and abroad is more focused on the interior lamps .
According to reports, compared to LED lamps for indoor and outdoor use LED lighting in fact more challenging environment. Because the higher the temperature outside, the sun is more intense, more powerful and so on. The LED lamps are the higher the temperature, the lower light efficiency, so the more problems will exist outdoors, but outdoors on natural climate change is also a high precision LED lighting accessories a considerable degree of damage to the threat.
National Electric Light Source Quality Supervision and Inspection Center (Shanghai) Vice Ren Lurong tree is that, regardless of the Beijing Olympics or the Shanghai World Expo, LED application is as a display rather than lighting, the former is the human eye to see, that is, people see it (LED), the latter is that it (LED) Man, that is, objects as light exposure. Currently as a display, LED is very successful because it has a great advantage in itself: dynamically. Therefore, it is a good place of neon signs, become the best and most successful landscape lighting.
Lu Rong tree view, LED as a light source for lighting, then there are three issues: efficiency in the use of light, color and life (light attenuation), and the quality of lighting (including glare). Despite the high illumination LED lighting can be done, energy consumption is very low, but that does not mean that LED lamps light efficiency is high, because the overall lighting quality is not high.
The lamp, for example, if the use of LED light source, may be 3 watts or 5 watts to be (less than ten watts of energy-saving lamps), it is to save energy. But such a high vertical illumination lamp can only guarantee a strong, meaning that light is very concentrated, very small point of light, the result is the uniformity of light, radius and range are restricted.
In addition, LED lighting glare too, shines into the distance to see only part of the eye, causing the color of light is too harsh. Meanwhile, despite the very long life of LED, but that the temperature is low, once made of lighting, and closed at a high temperature environment, the life expectancy would drop dramatically.
China Association of Lighting experts also believe that, LED road lighting lamps there is life, but in indoor lighting, LED lighting is currently the world is already quite mature.
Urgent target the high end
He moved from the traditional lighting industry have LED lighting to appliances and other high-profile non-lighting industry enterprises to enter the LED field, from the National Science and Technology, Ministry of Finance started "Ten City, ten thousand," plans to Guangdong Province, "a thousand miles of thousands of" high-power LED street light industry promote demonstration projects, LED is demonstrating its vitality, and the industry prospects for the development of LED, the same is very good.
Since LED has advantages of energy saving, under escort in a series of policies, market demand is huge. Insiders pointed out that the driving force to promote the development of LED industry from three areas: outdoor lighting, displays and automotive lighting.
"Global LED leading enterprises are rushing to enter the Chinese market this year, China will become the main battlefield of global LED manufacturers." Hao Zheng Wen said, LED industry prospects are very good in the next 5 years will be over 300 billion yuan output value and is expected to eventually the formation of trillions.
"At present, China's LED industry is an important issue in the development of industry competition are too small, resulting in high cost prices, so the scale needs to be expanded. Meanwhile, China's LED manufacturing equipment are the main areas in the low-end, high end dependence on imported , unable to adapt to the needs of industrial development, requiring joint efforts to promote the whole industry. In addition, China is still an urgent need for industry-standard sound system for the industry provide a strong impetus. "Hao Zheng Wen said.
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