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  • 學位論文

使用螢光粉遠離方式增加氮化鎵高功率白色發光二極體之光取出效率

Increase light extraction efficiency of GaN-based high power white light-emitting diodes by remote phosphor package

指導教授 : 林俊良
共同指導教授 : 陳耀煌(Yao-Huang Chen)
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摘要


本論文中,研究共分為三個部份。第一個部份是探討五種封裝方式的影響,由結果顯示,螢光粉遠程封裝光取出效率有較高提升。實驗二是將兩種不同的螢光粉粒徑以1:1的比例摻雜在一起再混於Silicone中製作螢光膠,將螢光膠用點膠方式塗抹在碗杯使螢光粉均勻分佈在碗杯裡,兩種不同螢光粉的粒徑混合與傳統的方式做比較,由實驗結果顯示,兩種不同螢光粉粒徑混合得的封裝方式,在操作電流350 mA時,光取出提高了16%,而飽和電流可操作到1.12 A。透過實驗一與實驗二研究成果延續到實驗三,將兩種不同螢光粉的粒徑與玻璃做結合封裝,與傳統的封裝方式做比較,由實驗結果顯示,在操作350 mA時,光取出提升了5%。由此以上實驗證實新穎的封裝方在光電特性上均優於傳統封裝。

並列摘要


In this thesis, the study is divided into three parts.The first part is to explore the impact of the five packages, the results of remote phosphor package of light extraction efficiency higher to improve.The Experiment II is doped with Two different fluorescent powder phosphor particle size to a 1:1 ratio mixed in the silicone coated phosphor glue dispensing in the bracket phosphor uniformity distributed in the bracket, two different phosphor particle size mixed with the traditional way, by the experimental results show that the package were two different phosphor particle size mixed in the operating current of 350 mA, the light extraction16%, while the saturation current operable to 1.12 A.Experiment 3; two different phosphor particle size and glass combination package with the traditional package by the experimental results show that operating at 350 mA, the light extraction by 5%. Thus the above experiments confirmed that the new package in the optical and electrical properties, superior to conventional package.

參考文獻


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