LED industry ushered in China's standard silicon substrate has been a national prize

Shanghai Securities News China made to upgrade to create in China, and to the international market, China must advance the standard. After nearly ten years of painstaking research and development, LED industry has finally ushered in the Chinese standard.

Zhengbao recently learned that the 2015 annual National Science and technology awards to be held in January in the Great Hall of the people in the year of the award ceremony held in 2016. According to the analysis, the first high-profile technology invention is expected to flowers "high efficiency silicon substrate GaN based blue light emitting diode" project (hereinafter referred to as the "silicon substrate project"). The main participants of silicon substrate project sun Qian told reporters yesterday, from the national strategic level, the silicon substrate technology is the technology with independent intellectual property rights in China, can build Chinese completely independent of the LED industry.

LED technology with the silicon substrate technology three sapphire substrate technology has won the Nobel prize in physics. Economists have said that in the context of sustained decline in the cost of silicon substrate technology if the capital can be sought after, LED industry is expected to reshape the industry structure.

National award"

16, the State Council executive meeting of the State Science and technology awards 2015 annual selection results, Zhengbao according to preliminary publicity and the historical experience of previous judgment, in 2015 the first prize of national technology invention is expected to be high efficiency silicon substrate GaN based blue light emitting diode "capture, because this is the only one selected for the annual awards first prize for project evaluation.

"High efficiency silicon substrate GaN based blue light emitting diode" by the Jiangxi declaration, the project mainly involved in crystal Jiang Professor, Nanchang University personnel including photoelectric (Jiangxi) Co. Ltd., sun Qian et al.

Project data show that the project first to overcome problems related to silicon, silicon substrate LED indicators produced by a leading position in the same study, and flat with silicon carbide, sapphire two technical route level; and from the substrate processing, epitaxial growth, chip manufacturing, packaging four links were invented for silicon high efficiency blue LED production substrate core technology, self system; the technology has been applied for or with domestic and international 232 patents, including 127 authorized patents, the core component of epitaxial chip each layer has patent protection.

According to reports, the National Technology Invention Award criteria: is the first at home and abroad of the major technological invention or innovation, technical and economic indicators have reached similar technology leading level, and promote technological progress in related fields and has produced significant economic or social benefits.

Silicon substrate technology should really get this award, he broke the Japanese and American countries in the field of technology monopoly, which is a strong support for the country's scientific and technological inventions. "A senior economist close to the State Council, so evaluation.

LED chip substrate has three technical routes: silicon carbide substrate, sapphire substrate, silicon substrate. Among them, the former is the noble line, the cost is high, its substrate and LED preparation technology is monopolized by u.s.. The sapphire substrate technology is largely in the hands of Japanese companies, the cost is low, which is the current mainstream line on the market; but the poor crystal sapphire wafer cooling, vertical growth difficult to achieve large size, not making device of vertical structure, it is difficult to peel off the substrate. The third route is China's independent development of silicon substrate technology, which makes up for the lack of the top two technical routes.

Sapphire technology inventor who won the 2014 Nobel prize in physics, from this point of view, the possibility of obtaining the first prize of China's national technology invention silicon substrate technology. There are people who say that the LED industry.

Chinese standards will reshape the industry chain

The industry said, is a major innovation project: the significance of the silicon substrate Gan silicon is Chinese technology independent research and development, with independent intellectual property rights, the construction of Chinese LED industry standards, highlighting the industry advantage; this technology will also get the support and promotion of the country, is expected to have a revolutionary impact on China's LED industry.

Silicon substrate has good stability and thermal conductivity, and has the advantages of low cost of raw materials, large wafer size and so on. A senior industry source said that the integrated circuit 6 inch and 8 inch production line production capacity, if the silicon substrate technology is mature, LED product prices are reduced by half of the period.

Sun Qian on the basis of previous research, bold innovation and using multi-layer AlGaN (GaN heterostructure field effect transistor) buffer layer using high temperature epitaxial growth technology, set up the compressive stress during the cooling process should offset the difference in coefficient of thermal expansion caused by Zhang Yingli, so as to avoid cracking in GaN thin films have achieved the crack free high quality gan. It also provides an excellent material basis for further research and development of the multi quantum well active region and PN junction doping, which can be used in silicon based Gan, and truly realize the technical route of silicon substrate GaN based LED.

China has surpassed the United States to become the world's largest LED application market, if the silicon based gallium nitride technology has been vigorously promoted by the Chinese government, the changes in the Chinese market will eventually lead to changes in global industry. There are people in the LED industry analysis.

Sun Qian said, from the national strategic level, Gan silicon technology is China's independent intellectual property rights, can build Chinese completely independent of the LED industry; from the industry level, based on silicon material low price and easy to be