间隙型白光LED荧光粉层涂敷的研究  

Research on gapped phosphor coating that converts into white LEDs

作　　者：江宾[1] 宋国华[1] 张广庚 缪建文[2] 余鹏飞[1] 

机构地区：[1]南通大学理学院,江苏南通226019 [2]南通大学化学化工学院,江苏南通226019

出　　处：《电子元件与材料》2015年第9期67-70,共4页Electronic Components And Materials

基　　金：江苏省科技厅产学研项目资助(No.BY2013042-08);南通市科技局项目资助(No.AA2012003;No.AA2012040);江苏省大学生创新创业训练计划项目资助(No.201410304041Z)

摘　　要：针对现有远程荧光封装光源空间色温分布不均匀的问题,提出了一种间隙型荧光粉涂敷方法。通过在透明基板的不同位置上预留环状间隙,以及控制环状间隙的宽度来调节空间色温分布。理论分析和仿真都表明了这种方法能够改善空间色温分布均匀性,实验结果显示,在56 mm直径的透明基板上,随着环形间隙直径或者间隙宽度的增大,最小的色温差异先减小后增大。当环形间隙直径为44 mm,间隙宽度为1 mm时,白光LED的最小色温差异达到752 K。Aiming at the non-uniform correlated color temperature （CCT） distribution problem in space of remote phosphor packaged source, a gap structure of phosphor coating was proposed. By reserving an annular gap at different location and controliing the width of the annular gap the CCT distribution in space on transparent substrate was adjusted. Both theoretical analysis and simulation show that the CCT distribution uniformity in space can be improved in this way, experimental results show that, on a transparent substrate of 56 mm diameter, with the increase of the annular gap diameter or width, minimum color temperature decreases first and then increases. When the diameter of the annular gap is 44 mm and the width of the annular gap is I ram, the least CCT difference of 752 K in white LED is achieved.

关 键 词：白光LED 远程荧光 荧光粉涂敷 色温分布 光效 Tracepro软件 

分 类 号：TN312[电子电信—物理电子学]