On January 8, the silicon substrate LED technology completed by Professor Jiang Fengyi of Nanchang University won the first prize of the 2015 National Technology Invention Award. Silicon substrate LED technology has changed the global LED industry. Jiangxi's technological advantages and industrial base will definitely make the pace of “Nanchang Optical Valley†faster and more stable.
On January 8th, the silicon substrate LED technology completed by Professor Jiang Fengyi of Nanchang University won the first prize of the 2015 National Technology Invention Award, which proves that China attaches importance to the independent innovation of silicon substrate LED technology, and also marks China's LED. The industry will usher in new development opportunities. Silicon substrate LED technology has changed the global LED industry. Jiangxi's technological advantages and industrial base will definitely make the pace of “Nanchang Optical Valley†faster and more stable.
Silicon substrate becomes the world's third blue LED technology
The preparation of high-efficiency GaN-based LEDs on silicon has always been the goal of the academic world. However, due to the large lattice mismatch and thermal mismatch between silicon and GaN, the epitaxial film crack, the poor crystal quality, and the low light-emitting efficiency caused by the opacity of the substrate have not been solved for a long time, which has led the industry to believe that it is on silicon. It is impossible to prepare high-efficiency GaN-based LEDs, and the GaN-based LED route on silicon substrates is almost "death".
However, after more than 3,000 experiments, the technical research and development team led by Professor Jiang Fengyi of Nanchang University finally took the lead in solving the world problem in the world.
Crystal energy photoelectric LED chip automatic sorting workshop
Dr. Fu Yu, researcher of the project team, said that the advantages of silicon substrate LED technology are obvious, and the combination of large-size, low-cost silicon substrate and automated technology can be used to achieve a significant reduction in the cost of LED production . It has applied for or possessed more than 330 international and domestic patents, among which 147 invention patents have been authorized, which realizes patent protection for each layer of the core components of epitaxial chips.
At present, the first sapphire LED technology route is the mainstream technology route adopted by the industry, and the second silicon carbide LED technology route belongs to the “noble†route. The core invention patents of these two technical routes have been monopolized by Japan, the United States and other countries, respectively, forming a patent barrier for the development of China's LED industry. Silicon substrate LED technology has become the world's third blue LED technology route, which has made China's LED industry fundamentally avoid patent disputes with the first two technology routes.
Silicon substrate LED technology leads the industry
A few years ago, led the high-end product market is basically dependent on imports, especially high-end lighting market required high power led chip, basically no domestic production. High-end LEDs such as automotive lighting , outdoor lighting, high-end indoor lighting , mobile flashlights, and TV backlights are monopolized by foreign manufacturers.
Crystal energy photoelectric silicon substrate LED chip production
In June 2012, Jingneng Optoelectronics announced the mass production of silicon substrate high-power LED chips. This not only marks the maturity of silicon substrate LED technology, but also marks the end of the history of foreign monopoly high-power LED chips.
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