LED lighting technology problems make the market very embarrassing

Used to describe the LED lighting industry like a raging fire Chinese a bit too much, but it is undeniable that the China LED lighting industry is hot, cold market. Why is there such an embarrassment this is because the current technology to power LED lighting with the existing efficient light source and no obvious advantages of energy saving, while the initial cost is much higher. Large current in improving the efficiency of light is also a lot of heat into the heat treatment, if the heat treatment is not good and will greatly reduce the life of the LED, with the radiator and increase the cost and volume, so that the advantages of LED light source disappear. So, everything is not up to the requirements of the lighting market LED technology provoke disaster.

Technical problems of LED lighting

In the LED packaging costs accounted for 50%, in order to reduce the overall cost of LED, we must choose the packaging structure more suitable, so changing the package structure of the existing package, to achieve a reasonable cost, will be LED lighting market acceptance of the most effective and most direct way. Of course, LED chip technology, with the increase in shipments, with more large size wafer fabrication process, are also constantly reduce costs, at a rate of 20% annually in recent years in the lower, if the package cost from the current account for the total cost of 50% reduced to 20% to 30%, the application of LED lighting to a meeting the new order of the size of the market.

For cost reduction, the mature technology is the whole industry chain. The upper, middle and lower reaches of the LED industry chain are used for epitaxial material and chip processing, product components and module packaging, display and lighting applications.

LED epitaxial wafer and chip industry accounts for about 70% of the profits, LED packaging accounted for about 10% ~ 20%, LED accounted for about 10% ~ 20%. According to statistics, the production of semiconductor lighting enterprises in China more than 3000, 70% of which focus on the industry downstream, domestic LED epitaxial material, chip with low power LED chip, and more than 80% devices rely on imports.

In recent years, the government has built some of the pepper Isaac LED lighting industry base, but the LED industry is still hot Chinese with 70% of the Chinese people for LED 10% to 20% share of the profits at the expense of. This means that the control of the core technology of LED foreign companies if not to pull LED low cost, simple LED downstream of the China LED industry only to achieve low-cost and allow the market to heat up to sacrifice their own profits, but not the downstream products of technical support, if the price is cheaper, and how many people dare to use.

In addition, the development of LED lighting technology, in addition to its resistance to heat and specifications, price and other factors, CFL energy saving lamp, fluorescent lamp technology is also in development, the luminous efficiency of office lighting system T5 lamp has reached 100lm/W level, CFL energy-saving lamps also have 3W specifications of ultra small product. From the current LED and energy-saving lamp price is concerned, the popularity of LED lighting still has a long way to go.

Chinese with governments at all levels to LED lighting as a new economic growth point, and China technology in the promotion, before application and package into the China foreign investors LED, began to hit the high-end technology projects. The day before, XURUI Au Optronics Co a total investment of $350 million LED epitaxial chip project foundation in Foshan City Economic Development Zone in the South China sea. Professional design and production of LED epitaxy, high brightness high-power chip, is expected in 2013 on the completion of the three phase of investment, Xu Rui will have more than 100 sets of MOCVD photoelectric machine, capable of producing 4 inch, 6 inch LED wafer and high power, high brightness LED chips at the same time, the luminous efficiency is greater than 135lm/W, full production to produce LED chip 380 million.

Compared to other LED products, electrical properties and thermal conductivity of metal base vertical structure LED has better, can increase brightness and luminous efficiency, which belongs to the general lighting in the next generation of LED technology.

Government took the lead in application pushes industrialization of LED lighting technology. According to the deputy director of the Shanghai Municipal Science and Technology Commission of Putuo District Li Wenbo introduced in September 2006 in Shanghai Putuo District Shanghai LED semiconductor lighting R & D center to the application of "government guidance, social participation, enterprises" operation and management mode, focus on technology research and development, testing, demonstration base and Industrial Agglomeration in the 4 aspects of work. At present, the center has successfully set up a LED testing and testing platform, and actively promote the establishment and implementation of LED standards, the successful construction of the "Suzhou river landscape lighting applications", etc..