How to break through the shackles of LED lighting application technology commercialization

At present, the semiconductor lighting commercialization pace is accelerating, but the application of LED in the general lighting market in a short time, except for a higher price, there are also many similarities in the application of the technical level is not mature enough, hindering the promotion of LED. So, what are the current LED in the field of general lighting of the main technical barriers? Most enterprises should increase investment in the field is what should be? How can we better get a breakthrough? In view of the above questions, the reporter interviewed Dr. Wu Enbai, vice president of the Hongkong science and technology research institute.

Innovation and breakthrough of application technology

At present, many enterprises are very optimistic about the future of LED development prospects in the field of general lighting applications, but the current market point of view, is still not ideal, in addition to higher prices, consumers of LED knowledge and other factors, in the application level being what obstacles?

Wu Enbai: LED lighting involves a wide range of applications, the use of different types of lamps, performance is very different, so the application of the technical issues involved are relatively different. But in essence, LED is a semiconductor device can emit light, when it is used for lighting, whether in the bulb, lamp, or as a lamp, lamp, in the minds of consumers will always regard it as a kind of lighting products to see, each kind of lighting products will have a a relatively fixed use situation, and the current LED industry to develop products, whether it is the chip, package, or application products, often there is a certain gap with the traditional product usage situation, this will cause some misunderstanding. This gap is often due to the current LED technology is not up to the level of consumer demand and the. So this gap is the current LED application technology to overcome the most problems. Its solution is closely related to technological progress.

For example, incandescent lamp has been used for hundreds of years. In the application process, people have developed a relative habit and a fixed use situation, such as 360 degree light. This is one of the incandescent lamp use situation, and will also affect people's choice of LED bulb. But LED is a very strong directivity of the light source, with it as the light source to make the lamp, it is difficult to form the United States Department of energy requires more than 280 degrees of light angle. As can be seen, in the use of the bubble bulb situation, LED optical design and the reality of the gap between the demand. Then MR16, for example, there is no enterprise can make 50W MR16 instead of LED spotlights, the main reason is the heat problem can not be solved. In such a limited surface area, the heat spread out, involving the limitations of LED application technology in terms of thermal.

Therefore, fundamentally speaking, to solve these barriers, we need to conduct in-depth understanding of each product, to make LED to the optical design, performance improvement techniques needed for the related lighting, thermal design, electrical design, material under high temperature durability, the use of materials and material life, life and the price balance.

Because the LED lighting technology research and development involves a number of disciplines of light, electricity and heat, in the technological application is the need for interdisciplinary integration, you think enterprises should be how to do in order to get breakthrough in the development process?

Wu Enbai: Hongkong Academy of Sciences should be the main approach is this: if you want to develop a spotlight, the formation of a specialized development team spotlights. Because involve a multidisciplinary optical, electrical and thermal knowledge, so the research team to understand the optical, electrical and thermal packaging, different aspects of knowledge researchers, patent research, testing technology development needed to focus on the spot, the final completion of the project. I think this model can also be applied to other enterprises in china. R & D process, the most important thing is to pay attention to, companies must focus, and from the perspective of lighting products, rather than from the LED industry used to develop thinking.

If it is from the national level to consider the layout of the LED application technology research and development issues, I think we should pay more attention to the global patent analysis and standards. These are companies can not do, or do not economic (there is the problem of duplication of investment). It is only through the power of the state that it is more appropriate for an appropriate research unit or an appropriate agency to do so. These studies play a very important and high-level guiding role for China to win a world class semiconductor lighting industry. Previously, the state has carried out some patent analysis, deployment recommendations and related standard setting work. But more resources should be invested to make them more clearly. For example, what technology will have a greater risk of patent mine where, can be developed, where the need for cooperation, how to carry out the yuanjiaojingong, should make the analysis more clearly.

Hongkong Academy of science and technology in the LED lighting technology, the focus of the development of the direction of what?

Wu Enbai: Hongkong ASTRI LED lighting technology in the deployment of relatively complete. In the LED chip level, we are committed to the development of high-power vertical chip, in which about 9 U.S. patents and the patent of the top 9. Due to technical development in place, patent deployment complete, it will have good development potential.

Package level, mainly for wafer level system package development. This kind of product we mainly locate in the special application, for example the camera flash lamp or the spotlight illumination and so on. Another,