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1. 华南师范大学 光电子材料与技术研究所, 广东 广州 510631
2. 佛山科技学院 物理系
收稿:2009-11-19,
修回:2009-12-12,
网络首发:2010-08-27,
纸质出版:2010-08-27
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郑同场, 李炳乾, 夏正浩. 蒙特卡罗模拟LED并联电路电流降额特性[J]. 发光学报, 2010,31(4): 590-594
ZHENG Tong-chang, LI Bing-qian, XIA Zheng-hao. Monte-Carlo Simulation of Current Derating Characteristics of LED Parallel Circuit[J]. 发光学报, 2010,31(4): 590-594
利用蒙特卡罗方法对LED并联电路的电流降额特性进行了模拟
假设分档后的大功率白光LED的正向电压(
V
F
)分布符合正态分布
研究了1
&
times;
n(2≤n≤
15)系列LED并联电路电流降额量(
I
P
)的概率
(P)
分布。模拟结果表明
I
P
的概率分布函数偏离了正态分布
密度函数曲线最高值点的两侧不对称
左侧较右侧陡峭;随着LED并联数(
n
)的增加
概率密度函数沿
I
P
增大的方向移动
并且越来越趋近于正态分布。当
n
一定时
I
P
随电路中出现LED承载电流超过其额定电流的概率增大而降低
降低的速度由快转慢;当
P
为0.01%~1%时
I
P
大约为20%~30%。当
P
一定时
I
P
随
n
的增加而增大;当
n>6
时
I
P
的增大速度变缓。模拟结果可以推广到
m×n
阵列化互连大功率LED模组。
paper
Li Bingqian, Liu Yuhua, Feng Yuchun, et al. The power dissipation of equivalent series resistance and its influence on lumen efficiency of GaN based high power light-emitting diodes
. Acta Phys. Sin. (物理学报), 2008, 57 (1):477-481 (in Chinese).
Wang Jian, Huang Xian, Liu Li, et al. Effect of temperature and current on LED luminous efficiency
. Chin. J. Lumin. (发光学报), 2008, 29 (2):358-362 (in Chinese).
Xu Guofang, Rao Haibo, Yu Xinmei, et al. Improvement of optical uniformity of white LEDs
. Chin. J. Lumin. (发光学报), 2008, 29 (4):707-712 (in Chinese).
Park Ji Hyun, Lee Sung Jun, Chio S M. Wafer level bonding for LED packaging using six sigma methodology
. Diffusion and Defect Data Part B, Solid State Phenomena, 2007, 124/126 (Part 1):519-522.
Oliver Kückmann. High-power LED arrays special requirements on packaging technology
. SPIE, 2006, 6134 :613404-1-8.
Huo Yanming, Chen Fushen. The research and simulation of LED array in lighting
. Chin. J. Lumin. (发光学报), 2009, 30 (4):436-440 (in Chinese).
Tian Dalei, Guan Rongfeng. Studies on the optical properties of LED based on microlens array
. Chin. J. Lumin. (发光学报), 2009, 30 (1):69-72 (in Chinese).
Chen C H, Tsai W L, Tsai M Y. Thermal resistance and reliability of low-cost high-power LED packages under WHTOL test . 10th International Conference on Electronic Materials and Packaging, 2008, Taibei: IEEE, 271-276.
Dieker Henning, Miesner Christian, Püttjer Dirk, et al. Comparison of different LED Packages
. SPIE, 2007, 6797 :679701-1-12。
Lan Kim, Moo Whan Shin. Thermal resistance measurement of LED package with multi-chips
. IEEE Transactions on Components and Packaging Technologies, 2007, 30 (4):632-636.
Chien Weiting, Lee Tsungxian, Ma Shinxingk, et al. A precise optical model of phosphor-based multi-chip white LEDs
. SPIE, 2007, 6669 :666901-1-24.
Miyachi Tsutomu, Sakuta Hiroaki, Kamoh K, et al. Development of light sources by large-scale integrated light-emitting diodes
. J. Light & Visual Environment, 2008, 32 (2):238-240.
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