以无机绿色和红色荧光粉及有机硅胶为原料, 采用高温模压法制备单层和叠层远程荧光薄膜, 并结合蓝光板上多芯片光源封装出三种结构的白光LED发光器件(单层型, 绿红叠层型, 红绿叠层型).通过荧光分光光度系统、双积分球系统、可见光光谱系统和光谱照度仪等仪器测试了远程荧光薄膜中荧光粉的光谱重吸收特性和所封装白光LED器件的光色性能, 并对机理进行了相应的分析.研究结果表明：远程荧光薄膜中红色荧光粉对绿光光谱产生明显重吸收效应, 且透射红光光谱色度坐标移动满足线性关系y=－0.881 6x+0.922 5, R2=0.998 6; 叠层远程荧光薄膜可以明显提高所封装白光LED器件的空间色温均匀性, 其中绿红叠层型、红绿叠层型和单层型白光LED器件空间色温差值分别为485 K、487 K和799 K, 空间各处色温的标准偏差和相对标准偏差分别为173.1、172.3、284.6和0.0373、0.052、0.066, 同时绿红叠层型白光LED器件的辐射发光效率达到三种结构中最高的301.1 lm·W－1(@350 mA, 9.2 V).

Singlelayer and laminated phosphor films were prepared by high temperature molding method with the using of green and red phosphor as raw materials, then white light emitting diode devices with three different structures (single type, greenred type and redgreen type) were packaged with chip on board blue light sources. Based on fluorescence spectrophotometer system, double integral sphere system, the visible spectrum analysis system and spectral color luminance meter, the spectral reabsorption characteristics of phosphor in remote phoaphor film and the photochromic properties of white light emitting diode packaged were studied, and the corresponding mechanisms were analyzed then. The results showed that, the red phosphor in remote phosphor film has obvious reabsorption affection on green spectrum emitted fromgreen phosphor, and the spectral chromaticity coordinates of mobile satisfy linear equations as y=－0.881 6x+0.922 5, R2=0.998 6. Laminated film can improve the uniformity of color temperature, the difference of space color temperature of single type, greenred type and redgreen type are 485 K, 487 K and 799 K. And the standard deviation and relative standard deviation of color temperature in space are 173.1, 172.3, 284.6 and 0.0373, 0.052, 0.066, respectively, in which the white LED device packaged by greenred type remote phosphor film achieve the highest luminous efficiency of 301.1 lm·W－1 (@350 mA, 9.2 V).