n-UV+Blue/Green/Red White Light Emitting Diode Lamps

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概要

• 論文の詳細を見る

• Phosphor-conversion light-emitting diode (LED) lamps were fabricated by precoating blue/green/red phosphors onto near-ultraviolet (n-UV) LED chips prior to packaging them into LED lamps. With a 20 mA injection current, it was found that the color temperature, $T_{\text{c}}$, was approximately 5900 K, the color rendering index, $R_{\text{a}}$, was approximately 75, and the CIE color coordinates were $x=0.33$ and $y=0.35$ for the "n-UV+blue/green/red" white LED lamps. No obvious changes in color temperature, $T_{\text{c}}$, or color-rendering index, $R_{\text{a}}$, could be observed when we increased the injection from 20 mA to 60 mA. These results indicate that such "n-UV+blue/green/red" white LED lamps are much more optically stable than the conventional "blue+yellow" LED lamps.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-04-15

著者

• Tsai Ji-ming

  South Epitaxy Corporation

• KUO Cheng-Huang

  Institute of Microelectronics & Department of Electrical Engineering National Cheng Kung University

• Wu Liang-wen

  Institute Of Microelectronics & Department Of Electrical Engineering National Cheng Kung Univers

• SHEU Jinn-Kong

  Optical Science Center, National Central University

• WU R.

  Nantex Industry Corporation

• Chang Shoou-jinn

  Institute Of Electro-optical Science And Engineering Center For Micro/nano Science And Technology Na

• Su Yan-kuin

  Institute Of Electro-optical Science And Engineering Advance Optoelectronics Technology Center Natio

• Liu C.

  Department Of Agricultural Chemistry Nation Taiwan University

• Sheu Jinn-Kong

  Optical Science Center, National Central University, Chung-Li 320, Taiwan

• Kuo Cheng-Huang

  Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University Tainan 701, Taiwan

• Wu Liang-Wen

  Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University Tainan 701, Taiwan

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