naa a22 4500 510822193 CHVBK 20180411083538.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s12541-013-0151-6 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0151-6 Optimization of hybrid LED package system for energy saving based on micro machining technology and taguchi method [Elektronische Daten] [Eun-chae Jeon, Tae-Jin Je, Eung-Sug Lee, Eun-Suk Park, Je-Ryung Lee, Hwanjin Choi, Seonghwan Chang, Sang-Kyu Choi] A new concept, ‘hybrid LED package system (HLP system)', is proposed as a simpler LED manufacturing process that unifies two steps of the process, the package step and the module step. Moreover, the HLP system can increase optical efficiency by virtue of its integrated optical pattern. A square pyramidal pattern was selected as the basic shape of the pattern of the HLP system. Four shape parameters of the HLP system were selected for optimizing the system. Nine cases of optical simulations organized according to the Taguchi method were performed using LightTools, and the optimum values of the parameters were determined by an SN ratio analysis. Using the optimum values, 28% higher illuminance and 32% higher luminance were predicted simultaneosly compared to the values without the integrated optical pattern. The optimum square pyramidal pattern was machined on a metal mold using an ultra-fine planer and a 90 degree angle diamond tool which would be used as a mold for manufacturing the optimized integrated optical pattern of the HLP system. The exact shape of the square pyramidal pattern with a height of 25 µm and a 90 degree angle was obtained. This study verified that the micro machined mold for manufacturing an optimized integrated optical pattern could be machined accurately, and finally the HLP system with the integrated optical pattern had higher uniform and brighter light distribution. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Hybrid LED package nationallicence Micro machining nationallicence Taguchi method nationallicence hx : height of pattern nationallicence h1 : height of dome lens nationallicence h2 : thickness of covered resin nationallicence α : angle of pattern nationallicence Jeon Eun-chae Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut Je Tae-Jin Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut Lee Eung-Sug Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut Park Eun-Suk Dept. of Nanomechatronics, University of Science and Technology, 176, Gajeong-dong, Yuseong-gu, 305-350, Daejeon, South Korea aut Lee Je-Ryung Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut Choi Hwanjin Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut Chang Seonghwan Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut Choi Sang-Kyu Dept. of Robotics and Mechatronics, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/6(2013-06-01), 1113-1116 2234-7593 14:6<1113 2013 14 12541 https://doi.org/10.1007/s12541-013-0151-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0151-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jeon Eun-chae Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 700 1- Je Tae-Jin Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 700 1- Lee Eung-Sug Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 700 1- Park Eun-Suk Dept. of Nanomechatronics, University of Science and Technology, 176, Gajeong-dong, Yuseong-gu, 305-350, Daejeon, South Korea aut NATIONALLICENCE 700 1- Lee Je-Ryung Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 700 1- Choi Hwanjin Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 700 1- Chang Seonghwan Dept. of Nano Manufacturing Technology, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 700 1- Choi Sang-Kyu Dept. of Robotics and Mechatronics, Korea Institute of Machinery and Materials, 171 Jang-dong, Yuseong-gu, 305-343, Daejeon, South Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/6(2013-06-01), 1113-1116 2234-7593 14:6<1113 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer