LED encapsulation, refers to the light emitting chip seal inside the package. Although our country has is the world's largest lighting appliances producer and second largest exporter of electrical lighting, due to the research and development lags behind, the domestic LED lighting enterprise is almost followed with the introduction of foreign packaging technology, lack of independent innovation, technology, leading to low products, high cost, low profit margins.
Fujian WuGouSuo recently, hercynian research institute of Chinese academy of sciences (cas) announced the successful development of kilowatt high-power LED lighting light source, this has fully independent intellectual property rights technology, replace the current with fluorescent ceramic LED fluorescent rubber core material, major technological breakthrough, which will reshape photovoltaic industry ecology.
In June this year, guangzhou international lighting fair in 2016, a power of 1000 watts of the LED light source, become the focus of the exhibition: dozens of light chip is encapsulated in a ceramic light-emitting surface only 5 cm in diameter. Such light packaging technology, whose work is?
It comes from the Chinese academy of sciences institute of hercynian. In 2013, to promote the industrialization of fluorescent ceramic, paid for by fujian WuGouSuo to technology, jointly established social capital division core source co., LTD., fujian province, became the only LED hercynian institute technology transfer and industrialization base platform. In January of this year, the hospital use of independent research and development of fluorescent ceramic white high-power packaging technology, solved the high power LED lighting widespread thermal management difficulties and encapsulation materials failure problem.
It is understood that the current general in the LED industry is fluorescent plastic packaging technology. When more than 200 w power LED light source density packaging will meet technical bottleneck in smaller light emitting area integration more chips are difficult to solve the problem of light source, thermal management, therefore difficult to manufacture high power leds. Even in the international leading level of Japan's leading enterprise, the product can only be under 200 w, limit value is less than 500 w. Is, therefore, the current LED lighting applications are mainly limited in the field of general lighting.
Patent barriers facing China's LED industry
"Since 2003, we began to consider how to break through the foreign patent barriers." Academician of Chinese academy of sciences, fujian WuGouSuo mao-chun hong said in an interview with reporters.
Mao-chun hong's patent barriers, refers to the global LED technology and patent, in the field of more than half were held by America, Japan, Germany and other developed countries. Global has developed to the day of the Japanese chemical synthesis and Toyota, kerry and general electric in the United States, Germany osram for patent core technology competition. They have been around the world, especially China's deployment of the patent. The LED industry in China at the young stage, low level of industrial technology.
Zhongke core source, deputy general manager and technical director shang-hui ye said that at present, the production of LED lamps and lanterns, using a variety of light sources are used blue chip + silicon scheme of white light, the technology scheme is restricted by the foreign encapsulation technology patent, the export market is limited, and because of the fluorescent silica gel aging can lead to droop. "This leads to about 80% in our country LED products focused on the landscape lighting, traffic lights, and other application market, less involved in automotive lighting, large screen and other high-end products, normal product market is turning into the red sea. Therefore, the LED industry in China to achieve long-term development, must break through the foreign patent hemmed." Shang-hui ye said.
In this background, the hercynian institute through high power LED lamp-house encapsulation technology breakthrough, change the present situation of the LED industry in China based on the beach. According to introducing, the division in the core source with independent research and development of fluorescent transparent ceramics sintering equipment, highly confidential formula, unique packaging technology, from equipment, formula, and the encapsulation process of the whole chain technology completely independent intellectual property rights. At present this technology has completed 4 PCT application, more than 30 domestic invention patent authorization has been achieving global patent layout.
Independent research and development kilowatt LED light source
Made from ceramic packaging materials, hercynian institute is how to think?
"We have solid laser materials research has been leading in the world. Inspired by laser materials research, we can think of using laser ceramics as the LED packaging material." Mao-chun hong tells a reporter, begin from 2007, r&d staff with the laser ceramic technology based on process improvement, made the transparent ceramics to achieve more excellent performance and luminescence properties of thermal conductivity.
Shang-hui ye told reporters that their research and development of ceramic packaging technology, with high thermal conductivity, high temperature resistance, good corrosion resistance, thermal shock, etc. Not only can do light source area is small, it can achieve a good heat dissipation. The zhongke core source has become the world's first manufacturing 1000 - watt light source module. Research and development of the high power LED into the lighting market, thus to realize the full replacement of traditional lighting is possible.
In zhongke core source of exhibition hall, the reporter saw the successful packaging 1000 w light source of LED lights, the whole light chip area is bigger than 1 dollar coin. Core source of the division in the production of 600 w light source module which has been applied to the Beijing 2018 Olympic winter games in Beijing training venue lighting, instead of 2000 w metal halide lamp.
Energy saving, it is recognized the characteristics of LED lighting products. High power LED lighting products, also can significantly reduce the power consumption and carbon emissions, power saving rate can reach about 70% on average. "In a 300 w fluorescent transparent ceramic packaging LED mining lamp instead of 1000 w metal halide lamp, for example: 1000 w metal halide lamp is about 2000 yuan, the service life of about 1 year, LED lights price 4000 yuan deposit halide lamp 2 times, at least 5 years of life. Such as replace to use 10 hours a day, 1 year to recover the cost, can power saving 12000 KWH for five years." Shang-hui ye said.
String booster of upstream and downstream of the industry development
In order to speed up the application of this technology promotion, CST core source has combined the upstream companies such as power supply, heat dissipation, contract energy management, establish industrial technology alliance, collaborative innovation. At present, from the power source of the high power LED fluorescent ceramic matching, alliance manufacturers have developed the corresponding product such as heat dissipation, at the same time to the downstream application industry alliance output complete product technical solutions.
"We will be according to the requirements of LED lamps and lanterns of downstream manufacturers, based on the fluorescent ceramic encapsulation technology, develop series products for its solution, and the output technology, science and technology service." Shang-hui ye said, fluorescent ceramic packaging technology compared with traditional technology, simplifies the patches in the process of manufacture of lamps and lanterns and reflow soldering process, can greatly reduce the cost of investment in the process of its industrialization. "For the LED assembly house has been put into production, can be carried out on use of the existing production equipment technology upgrading, don't have to purchase new production equipment." Zhongke cores, for example, the source is and the traditional metal halide lamp, high-pressure sodium lamp production enterprise cooperation, to provide a fluorescent ceramic packaging of high power LED light source module.
This convenient technical renovation, CST core source products began to the country. Jinan of sharp optical technology co., LTD. Is a company specializing in the production of LED street light, industrial and mining lamp lens, lens enterprise products such as lighting, tunnel lamp lens is zhongke core source technology member of strategic alliance cooperation, the company used zhongke core source of new light source packaging technology, is developing a new lens products. Committed to intelligent lighting solutions for lighting on both sides of the Taiwan straits in fujian province energy saving technology co., LTD., is a source of CST core users, the company is currently planning to CST core source of products, make the model of public lighting.
In early 2015, the division in the core source with semiconductor research institute of Chinese academy of sciences, Chinese academy of sciences institute of material structure, engineering thermal physics of Chinese academy of sciences, changchun hidayat electronic technology co., LTD. Signed a "bright" five parties agreement, agreed with development, production, sales and high-power integrated fluorescent transparent ceramic COB light and its lamps and lanterns of cooperation.
"Fujian LED industry upstream chip companies to a three Ann, downstream applications have hong bo photoelectric, furistock lighting, xiamen cinda, etc., such as have fluorescent ceramic encapsulates the core technology of widely used, while the middle and lower reaches of forming technology to support each other, cooperate with the industry chain, will make the LED industry development in our province entered a new era." The Chinese academy of sciences said Zhang Yunfeng WuGouSuo cooperation development everywhere.
