Quanzhou LED industry overcomes the problem of high-power lighting cooling

New technology improves heat dissipation by 5-10 times

"Unlike the traditional manufacturing industry, LED as a high-tech industry needs technical support on the one hand, and the specific direction is also very important on the other hand." The relevant person in charge of the Quanzhou LED Industry Alliance bluntly said that many companies only purchase raw materials such as light sources. Finally, simple assembly, in fact, it is difficult to call the "secondary entrepreneurship" in the true sense.

This is also considered by Lin Jisuo. "High-power lighting applications are the largest semiconductor market, but in Quanzhou, it is almost a blank, mainly unable to solve the heat problem." Lin Jisuo said. Therefore, he has been working with Professor He Yongji from the Guangdong University of Technology and Professor of Shenzhen Research Institute of Harbin Institute of Technology since 2008 to jointly develop LED eutectic packaging application technology. "After more than two years, the LHL eutectic process and packaging equipment have been successfully developed, which can significantly improve the heat dissipation effect of the chip, which is 5-10 times that of ordinary solid crystal technology," said Professor He Yongji.

"The life of the LED lamp is directly related to the junction temperature. The heat dissipation is not good, the junction temperature is high, and the lifetime is short. The junction temperature not only affects its lifetime, but also affects the short-time luminous efficiency. High-power LED devices using the eutectic process can satisfy The harsher use environment requires a wide application space in commercial lighting, outdoor lighting, factory lighting, etc., Professor He Yongji said. According to the reporter's understanding, eutectic technology has been mastered by CREE , Lumileds, Osram and other foreign LED companies, and this breakthrough has broken this pattern.

The development of upstream and downstream enterprises is the direction

In the Yiguang Solar Power Plant Zone on Kailin Road, Taiwan Investment Zone, the reporter saw that through an automated eutectic mechanical device, a piece of substrate was automatically fed through the slot, only need to tap two or three times, an LED light source It will form. “In the case of a 10 watt illuminator, the traditional light source needs to consist of 10 1 watt imitation lumen brackets, while the LHL package encloses 10 1 watt chips on a single substrate, saving material and manpower for subsequent sections. The assembly cost has greatly improved the economic efficiency.” Pointing at the equipment that is running at high speed, Lin Jisuo calculated the account for the reporter. This machine can produce an 8 watt light source every 10 seconds, while a machine 24 per day. It can produce 8,000 8-watt light sources in an hour. If you invest in 6 production lines, the annual output value will reach 300 million yuan.

The problem is that high-power chips still have to be imported from the United States at high cost. “Quanzhou has an upstream chip manufacturer. The midstream now has high-power packaging technology. There are a large number of complete lamp assembly companies downstream. If local chip manufacturers can produce high-power chips that meet European and American standards, upstream and downstream cooperation can be used in LED high-power. The lighting market has seized the opportunity," said the industry source.

In fact, the "development of the group" has always been the direction of the efforts of the spring enterprises. Pan Yiming, secretary-general of the Quanzhou LED Industry Technology Innovation Strategic Alliance, said that one of the most important tasks being carried out by the Alliance is to promote the establishment of enterprise groups, strengthen internal cooperation and enhance competitiveness.