On August 17, 2010, sponsored by Gaogong LED, Dalian Luming Technology Group, Dalian Semiconductor Industry Association, Dalian City Government, Dalian Economic and Information Technology Commission, 2010 LED Illuminated China Tour - National Tour Survey and The sixth seminar of the industry seminar was successfully held in Dalian. The seminar was held in the multi-function hall on the second floor of the Bolt Hotel in Dalian. The meeting held a heated discussion on topics such as technology and patents for the development of the LED industry.
The conference attracted about 100 participants. Liu Yuxi, Director of Semiconductor Division of Dalian Economic and Information Committee, Sun Dapeng, Director of Dalian Jinzhou New District Science and Technology Bureau, Xiao Zhiguo, Chairman of Dalian Luming Technology Group Co., Ltd., and Wuhan Diyuan Optoelectronics Technology Co., Ltd. Manager Dong Zhijiang, sales director of Jiangsu Xinli Optoelectronics Co., Ltd. Gu Zongjun, Ke Rui China senior engineer Wang Xiuru, and Dalian Hongwei Heat Transfer Technology Co., Ltd. general manager Yang Hongwu delivered a speech. Ma Junguo, chief engineer of the Dalian Economic and Information Committee, delivered a speech on behalf of the government.
Dong Zhijiang: Research progress and development trend of LED power chip lighting improvement for lighting
Dong Zhijiang pointed out that the current application fields of LED high-power chips for lighting are mainly in the fields of indication, display, backlight and illumination. The requirements for chips in each field are different, such as size, light efficiency, reliability, etc. Especially in the application of LED lighting, the harsh environment of LED lighting puts higher demands on the heat dissipation and temperature shock of the device. In the speech, Dong Zhijiang said that as LEDs follow the light effect, as long as the light efficiency is improved, the price will drop. For every 1% increase in luminous efficiency, you can save $2 billion annually.
Dong Zhijiang believes that the development of the LED lighting industry depends on three points: higher luminous efficiency, lower cost and better thermal management technology and reliability. To improve LED light efficiency, Dong Zhijiang proposed to improve LED light efficiency by improving internal quantum efficiency and light extraction efficiency (EQE). Among them, methods for improving internal quantum efficiency include: patterned substrate (PSS) technology, pGaN coarsening, hydride vapor phase epitaxy (HVPE), quantum dots, quantum wire MQW growth technology, roughened semi-polar, and non-polar epitaxy. Distributed Bragg Reflection (DBR) and Side Corrosion (LBR) techniques can be used to increase light extraction efficiency.
At the meeting, Dong Zhijiang outlined the research results of industrialization of 100lm/W high-power chips. The 100lm/W high-power chip is applied to indoor lighting fixtures. Through 1000-hour high-temperature accelerated aging (450mA) test, chip normal temperature life test and related data comparison, he believes that LED epitaxy and chip are the core technologies to solve luminous efficiency and thermal management.
Finally, Dong Zhijiang also briefly introduced Diyuan Optoelectronics Semiconductor Lighting Industrial Park. Diyuan Optoelectronics is positioned in LED lighting high-power epitaxy, chip research and development and production. Diyuan Optoelectronics produces power LED chips with higher lm/$, cost-effective high.
Dong Zhijiang, General Manager of Wuhan Diyuan Optoelectronics Technology Co., Ltd.
Framed Privacy Filter,Privacy Screen Filter,Framed privacy screen protector
Guangdong Magic Electronic Limited , https://www.magicmax.cc