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大功率LED荧光粉硅胶点涂工艺的三维格子Boltzmann模拟

李岚 郑怀 罗小兵

李岚, 郑怀, 罗小兵. 大功率LED荧光粉硅胶点涂工艺的三维格子Boltzmann模拟[J]. 应用数学和力学, 2014, 35(3): 264-271. doi: 10.3879/j.issn.1000-0887.2014.03.004
引用本文: 李岚, 郑怀, 罗小兵. 大功率LED荧光粉硅胶点涂工艺的三维格子Boltzmann模拟[J]. 应用数学和力学, 2014, 35(3): 264-271. doi: 10.3879/j.issn.1000-0887.2014.03.004
LI Lan, ZHENG Huai, LUO Xiao-bing. 3-Dimensional Lattice Boltzmann Simulation of Phosphor Jel Dispensing Process in Light Emitting Diodes[J]. Applied Mathematics and Mechanics, 2014, 35(3): 264-271. doi: 10.3879/j.issn.1000-0887.2014.03.004
Citation: LI Lan, ZHENG Huai, LUO Xiao-bing. 3-Dimensional Lattice Boltzmann Simulation of Phosphor Jel Dispensing Process in Light Emitting Diodes[J]. Applied Mathematics and Mechanics, 2014, 35(3): 264-271. doi: 10.3879/j.issn.1000-0887.2014.03.004

大功率LED荧光粉硅胶点涂工艺的三维格子Boltzmann模拟

doi: 10.3879/j.issn.1000-0887.2014.03.004
基金项目: 国家自然科学基金(51376070);教育部博士点基金(20100142110046)
详细信息
    作者简介:

    李岚(1989—),女,山东人,硕士生(E-mail: lilan321@hust.edu.cn)

  • 中图分类号: O359+.1

3-Dimensional Lattice Boltzmann Simulation of Phosphor Jel Dispensing Process in Light Emitting Diodes

Funds: The National Natural Science Foundation of China(51376070)
  • 摘要: 为实现蓝光LED(light emitting diode)芯片向白光LED照明的转化,大功率LED封装工艺流程中存在一个关键的环节——荧光粉涂覆,即通过点涂方式将荧光粉硅胶涂覆于LED芯片周围.荧光粉硅胶涂覆工艺是一个两相流动过程,它直接决定了荧光粉硅胶层的几何形貌及物理特性,并影响LED最终的光学和热学性能;因此对其中流动过程物理机制的理解有利于提升荧光粉涂覆质量,实现高性能LED产品.基于格子Boltzmann方法,建立荧光粉硅胶流动模型,并应用该模型研究了在平坦表面和方形凸起结构两种封装形式上的荧光粉硅胶点涂成形流动过程.结果表明:格子Boltzmann方法能够准确地模拟荧光粉点涂流动过程;在平坦表面上荧光粉硅胶液滴接触线与液滴直径之比(dL/D)和相对时间(t/T)成幂函数关系.
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出版历程
  • 收稿日期:  2013-10-23
  • 修回日期:  2013-12-12
  • 刊出日期:  2014-03-15

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