On October 9, the reporter was interviewed and learned that at present, three companies in our city, Zhongke Semiconductor, Canyang Photoelectricity, and Silver Rain Chip, mainly produce blue LED epitaxial chips and chips, while Zhongke Semiconductor's blue epitaxial chip and chip output rank among the top three in the country; Canyang Photoelectricity Luminous Efficiency has reached the international advanced level.
In the first August of this year, the invoicing sales of the led new light source industry in our city increased by 27.9% year-on-year. With the vision of "bringing huge changes to human life" in the nature of the Chekhoi Prize, industry insiders believe that the led industry is expected to usher in a new round of golden development.
Led blue light technology into focus
It takes blue light to produce a white light source
The
English abbreviation of light-emitting diodes is led. For this word, most readers should not be unfamiliar with it, because LED lights have been widely used around us, but few people know that it is precisely because the invention of blue LEDs has brought this new "light".
Yesterday, Wang Hong, general manager of Zhongke Semiconductor in our city, said that in the 1960s, people invented red and green LEDs, but because the three primary colors of light include red, green, blue, and the lack of a blue light source, the white light source of illumination can never be created.
"The reason why it is more difficult to manufacture blue LEDs is mainly that gallium nitride materials are required as substrates for their epitaxial sheets, while gallium nitride is not a natural material, and the preparation process is very difficult. Kingdom Hiroshi said.
In the 1980s, Akasaki, then a professor at Nagoya University, joined Amano in challenging the crystallization of gallium nitride that had overwhelmed researchers around the world. After repeated experiments, they successfully made gallium nitride crystals in 1986 and achieved the world's first blue LED in 1989.
" Until 2000, blue LED manufacturing technology was truly industrialized. "Introducing Kingdom Hiroshi.
Wang Hong believes that among them, due to the great development of China's led industry, LEDs have quickly entered thousands of households, and blue LEDs have won awards, and China's manufacturing is indispensable.
"Blue light" has become the flagship product of Yangzhou LED
It has reached the leading level of international manufacturing
As early as 2002, the Municipal Economic and Technological Development Zone was committed to building the LED industry chain. The LED industry chain mainly consists of five parts: substrate material production, epitaxial wafer production, chip preparation, packaging and downstream application product production.
Yesterday, a relevant person from the Development Zone Economic Development Bureau told reporters that Yangzhou Economic and Technological Development Zone is the national semiconductor lighting industry base. Currently, the Municipal Development Zone has gathered 121 MOCVD equipment (equipment for producing LED epitaxial wafers), accounting for 1/6 of the national total, and the full production rate exceeds 90%, with an annual output of approximately 3.5 million epitaxial wafers.
At present, our city has gathered a number of well-known core enterprises at home and abroad, such as Zhongke Semiconductor, Canyang Optoelectronics, and Qianzhao Optoelectronics. "In addition to the production of red and yellow epitaxial wafers by Qianzao Optoelectronics, about two-thirds are the production of blue and green epitaxial wafers." The above-mentioned person said that the main companies that produce blue LEDs include Zhongke Semiconductor, Canyang Optoelectronics and Yinyu Chip.
From January to August this year, Zhongke Semiconductor’s invoice sales more than doubled year-on-year. General manager Wang Guohong told reporters that the company's output currently ranks among the top three in the country.
During last year’s “April 18” period, at an LED industry forum, experts introduced Canyang Optoelectronics’ LED light source of about 170 lumens/watt, which only six or seven major manufacturers in the world can achieve. This marks that Yangzhou’s LED light source research and development technology has reached the leading level of international manufacturing.
"At present, Qianzao Optoelectronics has also entered the blue-green LED epitaxial chip market, but it has only been put into production in Xiamen for the time being. There is currently no production line in Yangzhou." Yesterday, the relevant person in charge of Yangzhou Qianzao Optoelectronics told reporters that the cost performance and product consistency of the ultra-high brightness red and yellow epitaxial wafers and chips produced by Yangzhou Qianzao Optoelectronics rank first in the country. Dry Lighting's quaternary red and yellow LED epitaxy and chips account for more than 45% of the domestic market.
Blue light is popular around us
Yangzhou LED development is more "local"
"More than 300 groups of LED energy-saving lamps that illuminate the Thin West Lake Tunnel use blue light technology." Mr. Zhang, an led enterprise engineer in the development zone, told reporters that in fact, blue LEDs have been widely used around us. Red and yellow LED technology is mainly used for traffic lights, bank screen screens, landscape lights, etc., and the energy-saving led white street lights we see every day use blue light technology.
"For example, the colorful large screen at the intersection of the Yangtze River South Road used red, green, and blue, otherwise this effect would not be achieved.”
In addition to the lighting market, Zhongke Wanghong said, "led Blu-ray technology is also widely used in flat-screen TVs and mobile phone backlights, car headlights and so on. The use of blue LED as a light source has promoted the low power consumption and thinning of TVs, and can achieve high-definition images and high-quality music.”
In addition, Wang Hong introduced that ultraviolet LEDs developed from blue LEDs can also efficiently purify domestic water; they can be promoted and applied in plant factories as artificially made suns to produce light colors that meet the growth stages of various plants to irradiate, which can effectively grow vegetables, improve yield, and reduce pollution.
In the award speech, the Nobel Prize Committee stated: "Incandescent lamps illuminated the 20th century, and LED lamps will illuminate the 21st century."
Wang Guohong was deeply touched by this, "In the past, people still had some doubts about the market prospects of LED. In fact, it is something closely related to life. If it is grounded, it will strengthen our confidence in development." He said that if this momentum continues, Yangzhou will be expected to become the top LED R&D and manufacturing base in the country.
ANNA