摘要
针对白光发光二极管(LED)器件封装中存在的荧光粉沉淀现象,对点胶后不同静置时间下白光LED的光学性能和色坐标集中度进行了研究。研究结果表明,当荧光粉静置时间在0~30min时,色坐标落点较为集中,中心坐标位于色容差7SDCM内;30~40min时,落点较为分散,中心坐标超出色容差。模拟了白光LED灯具在热学平衡时的热量分布,结果显示LED灯具的工作温度满足工业生产的需求。
Aiming at the phenomenon of phosphor sedimentation during white light emitting diode （LED） package, the optical properties and the concentration ratios of color coordinates of a white LED after dispensing are studied under different standing time. The study results show that, when the standing time is between 0 and 30 min, the color coordinate setting is concentrated whose center coordinates are in the range of 7 SDCM color tolerance; when the standing time is between 30 min and 40 min, the color coordinate setting is dispersive whose center coordinates are out of the range of color tolerance. The heat distribution of white LED lamps at the heat balance is simulated and the results show that the working temperature of light emitting diode lamps meets the requirements of industrial production.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第10期360-367,共8页
Laser & Optoelectronics Progress
基金
国家自然科学基金青年科学基金(51302171)
国家自然科学基金(11474036)
上海市自然科学基金(12ZR1430900)
上海应用技术学院人才计划(YJ2014-04)
上海市学科能力建设项目(14500503300)
上海市产学研合作项目(沪CXY-2013-61)
上海联盟计划项目(Lm201547)
关键词
材料
白光发光二极管
光学一致性
荧光粉沉降
色坐标
materials
white light emitting diode
optical consistency
phosphor sedimentation
color coordinates
