Domestic LED lighting: 30 years of independent innovation of industrial chain

After more than 30 years of development, China's LED industry has gone through the purchase of devices, buy chips, buy epitaxial film after the road, has been initially achieved epitaxial wafer and chip production, the formation of a more complete industrial chain.

Industrial chain formed

First commercial LED appeared in 1968, the earliest GaP (Lin Huajia), GaAsP (as Lin Huajia) red, yellow, green LED has been applied to the indicator numbers and text. The following ten years, high brightness, color has become the main subject of LED technology research. In 1991 the Japanese Toshiba Co and the United States HP company developed four y Department of orange, yellow, yellow green high brightness LED. In 1994 Japan Nichia Corporation developed GaN (Dan Huajia) blue green LED. In 1995, the high brightness blue, green LED has entered the mass production, so that the wavelength of light from the red LED to cover the entire range of the visible spectrum, and has a luminous efficiency of up to 30%. Followed by the successful development of the white LED, but also greatly expanded the application of LED, since then began to form a Chaoyang unlimited LED lighting industry.

China LED development started in 1960s. November 1970 in Shanghai held a national conference on GaAs, water vapor epitaxy report made "research results of gallium phosphide red light emitting diode", from China's LED materials and devices research and development officially started. LED industry in 1980s, in 90s the LED industry has begun to take shape, the rapid development of the late 90s.

Taiwan LED enterprise for chip packaging companies, all imported from overseas. In this period, the industry is mainly packaging, the products are mainly used in signal, sign, digital display and so on. In 1998, the state "95" technical transformation so that the establishment of the Nanchang factory of the 746 Xin Lei photoelectric company produced a bright LED chip only 1 billion. 1999 Hebei Huineng Electronic Co. Ltd. and Hebei Lide electronics company completed InGaAlP ultra high brightness LED epitaxial wafer and chip production lines, the annual production capacity of epitaxial wafers 10 thousand and chip 100 million, which changed our LED wafer and chip all dependence on imports.

Domestic LED technology development cannot do without the research of scientific research institute. Supported by the National Natural Science Foundation of China in 1997, the first blue light emitting diode was developed by Peking University. After a few years of Nanchang University in the first international successful development of silicon substrate materials and the blue LED chip production technology, to achieve mass production, becoming the third LED epitaxial material and chip technology with independent intellectual property rights.

China's LED industry has experienced four stages: the import of device sales - import chip packaging - Import epitaxial wafer chip and packaging - independent production of epitaxial wafers, chips and devices. China's LED industry has made such great achievements, but also many reasons: first, the application of optoelectronic products market expanding, the contradiction between supply and demand, the lack of industrial scale, insufficient supply, the urgent need to expand production capacity, the development of industrial economy. Second, the reform and opening up has brought development opportunities. China's rapid development of the LED industry in Taiwan, a large number of chips exported to the mainland, coupled with the LED packaging technology matures, new enterprises involved in the mainland packaging industry, the formation of the overall industrial economic expansion. Third, the government has stepped up efforts to support industrial development. Changchun semiconductor factory, the state owned 746 factory, Suzhou semiconductor factory has carried out technical transformation, and combined with the research results of colleges and universities, and achieved good results. Fourth, the rapid growth of the market makes it difficult to meet the needs of mainland China's technological transformation, and thus a large number of chips from China's Taiwan, Japan imports, thereby promoting the development of LED packaging industry. Fifth, the industry generally agreed that the development of China's optoelectronics industry need to implement the combination of the following: the combination of investors and enterprises, research results and the combination of enterprises, the two sides of the Strait of technology and resources combined with the three. Sixth, the international LED technology is developing rapidly, the introduction of four yuan, Gan and white LED to promote the development of the LED industry. At the same time, LED included in the "863" program, so that the LED industry has been booming.

After 30 years of development, LED industry has experienced Chinese buy devices, buy chips, buy epitaxial film after the road has realized the wafer and chip independent production, formed a relatively complete industrial chain. The main research unit of Peking University, Tsinghua University, Nanchang University, Institute of semiconductors, the CLP Group thirteenth Research Institute, Institute of physics, South China Normal University, Xiamen University, Shandong University, Nanjing University; epitaxy, chip production plant mainly in Xiamen, Dalian Road, Shanghai three beautiful blue, Shanghai Blaupunkt, Shandong, Shenzhen, Hangzhou Huaguang, Silan azure Jiangxi LIAN, Nanchang Xin Lei, Shanghai morning; packaging and application of manufacturers are mainly Xiamen Hualian, Foshan star, Ningbo Shengpu, Jiangsu Wenrun, Guangzhou Hongli, Tianjin star, Hebei Segotep, Shanghai, Beijing and Shenzhen before Riyadh country star ye etc.. At present, the number of people engaged in the LED industry reached more than 30 people, enterprises more than 2 thousand, of which more than 40 epitaxial and chip manufacturers, packaging enterprises of, LED applications and supporting more than 1000 enterprises. 2007 China's LED production of 46 billion, the chip output of 36 billion, of which a high brightness chip of only 21 billion, the output value of the device and module up to 22 billion yuan.

To broaden the application areas to drive growth

China optical photonics Optoelectronics Industry Association Branch (hereinafter referred to as the LED Association) is the predecessor of China Vacuum Electronics Association designed photoelectric devices