Nakamura Shuji share LED development revelation: passion + Freedom

Dr. Nakamura Shuji and his colleagues at the University of Santa Barbara, Dr. Steven, who recently visited the Taiwan area. The new Nobel prize in physics has always been famous in his style of straight talk from an honest man, this time in the spring to visit Asia trip in the Taiwan area, in addition to visit Taiwan EPISTAR LED outside the factory, also in April 9th to Jiaotong University keynote speech.

Nakamura Shuji's trip to share his R & D Blu ray LED and follow-up in the LED aspects of the psychological process and results, as well as to provide him with insight into the future of the LED industry, LD industry analysis. LEDinside this time by Li Bingjie, chairman of the board of Finance and the assistance of the University of communications, but also very smooth access to the two Mr. Nakamura Shu, I hope that some of his views and ideas, to bring more light for the LED industry.

Blu ray LED traceability - great invention

According to the research results because of blue LED won the Nobel prize for physics award, Nakamura Shuji said that his invention is a major breakthrough in high efficiency LED, previously spent 20 years to realize the project development, and the Nobel prize awarded to the three of them though, but did not mention indium gallium nitride layer on the winning grounds (InGaN Layer), he is a little unhappy for this. He believes that this can not be less than the Blu ray LED, so that the Nobel Prize Committee awarded the reasons for the wrong.

He won the prize, there are a lot of different seminars, speaking invitations, in the village of Santa Barbara and colleagues at the University of the discussion, the other said, you are Nobel prize ", and you should all declined research relevant results offer, in the village followed his advice, to start a new life a Nobel prize winner.

Li Bingjie, chairman and CEO of crystal physics prize winner Nakamura Shuji, chairman of the board of directors of the United States and China, the physics prize winner of

Research to maintain enthusiasm, try to get the freedom of research

In the face of the engineers, scientists are continuing problems, and in the same village belongs to Santa Barbara college and is Dr. Steven Denbaars research partners pointed out that doing research to keep warm, when the impact of new technologies, new things to some of their own creation can appear in different applications. He stressed that it was important to obtain freedom of research and to do what he wanted to do. His teacher is the famous yellow light LED inventor George Craford, and he has discussed this issue, Steven Denbaars later decided to go to the university more freedom, and in this industry do indeed have different research.

Nakamura Shuji said, do research really need enthusiasm, to have a good concept, but also the need for new equipment, new technology thinking. When he was in the development process of blue LED, even LED production equipment to develop personally, with their own strength and technology, and to find the appropriate materials, a major breakthrough in order to finish the Blu ray LED. He believes that even in large companies, as long as they can get the freedom of research, but also can make a good research results.

In the village to the engineers an important proposal, want to ten times the difference, in fact, there can be a small step of the different, positive results for the industry. "

In this regard, EPISTAR chairman Li Bingjie also wrote, crystal electric past spent more than 30 billion new Taiwan dollars (about 5 billion 982 million yuan) funds to do LED development, despite the commercialization of research results, also meet many customer expectations, but these good results, sometimes encounter plagiarism products the structure of the competition, this is a problem.

LED and LD into the next generation of technology trends, bet GaN on GaN and LD

Nakamura Shuji pointed out that in the past ten years, he has been living in gallium nitride (GaN) substrate long crystal technology, living in the field of energy, the future will bear fruit. He believes that GaN on (X) in various combinations, GaN on GaN (expected future growth will be Dan Huajia Dan Huajia substrate) is a major breakthrough in the above areas, long LD, LED will have better efficiency than the previous achievements and. However, the current cost of the GaN substrate is still high, far higher than the sapphire substrate, and hope that future research will be able to reduce costs. The growth in the field of Gan sapphire substrate for LED development in efficiency has gradually come to the bottleneck of growth, and some need to overcome the problem of practical application, for example the theory of metaphor sapphire LED a summary is 70% light, 30% hot, but LD laser can produce 70% light, but not too much heat produce. Therefore, he expects GaN on GaN cooperation in the case of the parties, there will soon be a major breakthrough.

He and Dr. Steven GaN are not optimistic about the development of on Si (silicon substrate growth Dan Huajia) in terms of lighting LED, that should not waste time on the top of the Denbaars. But for GaN on Si generated by the prospects of the vertical power supply device, but also express optimistic attitude, is expected to recharge the smartphone, other power related applications, the development of this area will be very bright.

Dr. Steven Denbaars

As for the LD, the village believes that the efficiency and quality of LD laser lighting will be better, the current cost is still high, but the village team has been working to reduce costs. In the demand for high directivity, such as car headlights, there have been practical results on the market can be seen. He also pointed out that the mainland manufacturers like three and so on, there are many manufacturers of technology have to catch up, so it will continue to go on the future of Technology