Inhibition of phosphor sedimentation for White Light-Emitting Diodes with a facilely realizable and economical method
In LED packaging,phosphor particles are usually mixed with silicone resin and then dispensed onto the top surface of LED chips.The phenomenon of phosphor sedimentation during dispensing and curing process is a serious problem in the LED packaging industry.In this paper,a facilely realizable and economical method was proposed to restrain phosphor sedimentation in high-power white LED packaging.The method has no influence on the property of phosphor,and makes phosphor settle much slower than that in the conventional packaging.The reason of gravity effect for this phenomenon was figured out by forces analysis.From the results it can seen that the new method is facilely realizable,cost saving and environmental friendly.With subsequent improvement,it may be widely applied in the LED packaging industry.
phosphor sedimentation white LED dispensing silicone
Xiang Lei Huai Zheng Xiaobing Luo Sheng Liu
School of Mechanical Science & Engineering,Huazhong University of Science & Technology,Wuhan,430074, School of Energy & Power Engineering,Huazhong University of Science & Technology,Wuhan,430074,China Cross-disciplinary Institute of Engineering Sciences,School of Power & Mechanical Engineering,Wuhan,
国际会议
The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)
成都
英文
1468-1471
2014-08-12（万方平台首次上网日期，不代表论文的发表时间）