Perspective on the development quality of LED lighting industry in China

Compared to the noise during the day, the night of Shanghai, Expo Park, the more distant view of the two affordable aesthetic. And it all comes from a little led". Not only "one axis and four Pavilions" and the best practices in the city's landscape lighting is fully LED, as well as the value of more than one billion yuan LED display to display rich video content.

In addition to the "one axis and four pavilions and city best practice area, the Shanghai World Expo Park Plaza lighting, along with the landscape, identification and intelligent tutoring system and indoor outdoor lighting are also used in semiconductor lighting technology LED. At the same time, as an important visit to the content of the night lighting also uses a variety of new energy-saving lighting tools.

"This is the first large-scale use of LED lighting in China's urban blocks. "Zhou Minhao, deputy director of the Shanghai Municipal Economic and Information Committee said in the Expo Axis of one kilometer long with about 2000000 LED, the Expo site uses 1 billion 30 million LED chips; World Expo venues indoor lighting in about 80% of the LED green light, compared to ordinary incandescent lamp energy saving up to about 90%.

Shanghai, World Expo in 2010 is becoming the world's largest LED show, the Expo is also becoming the world's largest LED demonstration area. This large-scale demonstration also shows that China has become the largest LED output and the largest market in the country.

Lack of the right to speak upstream

LED red, yellow and green. But that time is used for signal indication, until the last century in 90s the Blu ray LED era came out. The combination of phosphor and blue light LED can easily get white light, which makes LED onto the road of illumination.

In China, Shanghai is not the first large-scale LED show its swaying posture. As early as the 2008 Beijing Olympic Games, high brightness, high power LED successful application, so that the wonderful opening ceremony became the biggest LED light show. After a lapse of a year and a half, LED in Shanghai, World Expo once again to exert their fists, with its huge visual impact once again created a shocking scene of the world.

From the manufacturing technology, the LED lamp itself is more complex than traditional lamps, which covers a wide range of industries, such as semiconductor, lamp structure and cooling materials, is a cross industry products. "Zheng Haowen, director of the national high-tech enterprise development Specialized Committee LED LED told reporters, long industrial chain, from upstream of the substrate materials, epitaxy, chip to device packaging and application, covering the semiconductor industry and lighting industry, is the subject of industry.

From the domestic LED industry layout, the development of China's LED industry is extremely unbalanced. The national development and Reform Commission statistics show that in 2008 the total output value of China's semiconductor lighting of nearly 70 billion yuan, of which the chip output value of 1 billion 900 million yuan, 18 billion 500 million yuan package, application products output value of 45 billion yuan, chip, package and application value of the ratio of 1: 9: 22.

In other words, behind the fiery investment in the LED industry, is an embarrassment to have to face the fact that the domestic LED companies in the epitaxial film, chips and other key aspects of the lack of the right to speak.

Data from the China Lighting Association show that in the LED industry chain, epitaxial wafers and chips accounted for 70% of the profits, while the LED packaging and application only accounted for about 30% of the profits. Epitaxial wafer production is still completely controlled in the hands of foreign companies, domestic enterprises have not been able to achieve epitaxial film production. Chip, domestic enterprises are mainly concentrated in the field of low power, in the field of high-power high-end technology, production, quality and other issues.

For lighting is still less effort

At present, the development of LED, especially white LED is very fast, the light effect has exceeded some of the existing light source, such as incandescent lamp, fluorescent lamp, etc.. LED is also very rapid progress in landscape lighting and road lighting, thanks to technological advances in this regard, on the other hand, thanks to the continuous decline in the price of LED. With the deepening of the concept of global energy conservation and emission reduction, LED will play an increasingly important role in energy saving and environmental protection.

Expert China Lighting Association pointed out that China's LED industry development at home and abroad. There is a significant difference is that China is more focused on outdoor LED lamps, do the best and most successful is the landscape lighting, and abroad is more focused on indoor lighting.

According to reports, compared to the indoor LED lamps, outdoor LED lamps in the use of the environment is more challenging. Because the outdoor temperature is higher, the sun is more intense, more power, etc.. The LED lamp is the higher the temperature, the lower the light efficiency, so there will be more problems in the outdoors, and outdoor natural climate change also has a considerable degree of damage to the high precision LED lamp accessories.

The national electric light source quality supervision and Inspection Center (Shanghai) deputy director Lu Rongshu believes that both the Beijing Olympic Games in Shanghai or World Expo, the application of LED as a display instead of lighting, the former is the human eye to see that people see it (LED), the latter is it (LED) to see people as lamps the object is illuminated. At present, as shown, LED is very successful, because it has a great advantage: can be dynamic. Therefore, it is a good substitute for neon lights, becoming the best and most successful landscape lighting.

Lu Rongshu believes that LED as a light source for lighting lamps, there are three aspects of the problem: the efficiency of light, color and service life (attenuation of light) and lighting quality (including glare). Although LED lamps can be very high illumination, low energy consumption, but this