梯度结构荧光薄膜片对白光数码管光色性能的影响
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摘要
利用模具法将荧光粉胶层制成薄膜片,并将薄膜片黏合于倒置芯片上表面,同时在芯片和薄膜片周围旋涂掺杂TiO2颗粒的混合胶层,制备成白光数码管,并对样品进行光色性能的测试和机理分析。分析结果表明,凹槽型结构荧光薄膜片制备的白光数码管平均光通量和色温分别为159.2lm和4 887K,出光均匀度为99.2%,相较于平面型结构光通量低了0.93%,色温低了6.06%,出光均匀度提高了0.5%,出光一致性更理想。同时通过光强比对,凹槽型结构荧光薄膜片制备的白光数码管可视角度约为113.1°,法向光强为3 358mcd。结果表征,荧光粉薄膜片的应用,能制备出可视角度小、出光一致性高的白光数码管。
The phosphor film was made by mold method and bonded on the inverted chip surface film piece.At the same time,around the chip and thin film,the doped TiO2 particle mixing rubber was spin cooted,then prepared into white light digital tube,and the samples are under light colour performance test and mechanism analysis.The results indicate that the average luminous flux and color temperature of the white light digital tube prepared by the fluted structure fluorescence film are 159.2 lm and 4 887 K respectively,and the light uniformity is 99.2%.Compared with the flat surface structure,the light flux is 0.93%lower,the color temperature is 6.06%,lower and the uniformity of the light is increased by0.5%.Through the light intensity comparison,the visual angle of the white light digital tube prepared by the fluted structure fluorescence film is 113.1,and the normal light intensity is 3 358 mcd.As a result,the phosphor films can be used to produce white light digital tube with small visual angle and high consistency.
The phosphor film was made by mold method and bonded on the inverted chip surface film piece.At the same time,around the chip and thin film,the doped TiO2 particle mixing rubber was spin cooted,then prepared into white light digital tube,and the samples are under light colour performance test and mechanism analysis.The results indicate that the average luminous flux and color temperature of the white light digital tube prepared by the fluted structure fluorescence film are 159.2 lm and 4 887 K respectively,and the light uniformity is 99.2%.Compared with the flat surface structure,the light flux is 0.93%lower,the color temperature is 6.06%,lower and the uniformity of the light is increased by0.5%.Through the light intensity comparison,the visual angle of the white light digital tube prepared by the fluted structure fluorescence film is 113.1,and the normal light intensity is 3 358 mcd.As a result,the phosphor films can be used to produce white light digital tube with small visual angle and high consistency.
引文
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[17]Xu J,Hassan D A,Zeng R J,et al.Lu3Al5O12:Ce@SiO2phosphor-in-glass:Its facile synthesis,reduced thermal/chemical degradation and application in high-power white LEDs[J].Journal of the European Ceramic Society,2016,36(8):2017-2025.
[18]WU Hua-sheng,Zhou Xiao-ping.Reduce the angle of LED chip:CN,104821354 A[P].2015-08-05.吴化胜,周小平.减小LED芯片发光角度的方法:中国,104821354 A[P].2015-08-05.
[19]SHENG Li-jun.Optical performance of single surface lighting white digital tubes wi th inverted chip[J].Journal of Optoelectronics·Laser,2018,29(2):138-142.盛立军.倒置芯片单面出光白光数码管的光色性能[J].光电子·激光,2018,29(2):138-142.
[20]CHE Zhen,ZHANG Jun,YU Xin-yu.Optical design and research on phosphors for white LED[J].Chinese Journal of Luminescence,2015(10):1220-1226.车振,张军,余新宇,等.白光LED荧光粉层的光学设计及研究[J].发光学报,2015,(10):1220-1226.
[2] SHENG Li-jun,Kong Bao-gen.Research based on empty sealing technology on white LED tube[J].Optical Technique,2011,37(4):487-490.盛立军,孔宝根.基于空封技术的白光数码管寿命的研究[J].光学技术,2011,37(4):487-490.
[3] SHENG Li-jun.White light digital tube packaging technology of the integration[J].Optical Technique,2015,41(3):225-228.盛立军.一体化的白光数码管封装技术[J].光学技术,2015,41(3):225-228.
[4] SHENG Li-jun.Investigation of photo-chromic properties of inverted white light digital tube with TiO2particles[J].Journal of Optoelectronics·Laser,2017,28(11):1186-1190.盛立军.TiO2掺杂浓度对倒装白光数码管光色性能的影响[J].光电子·激光,2017,28(11):1186-1190.
[5] Xie B,Chen W,Hao J,et al.Structural optimization for remote white light-emitting diodes with quantum dots and phosphor:packaging sequence matters[J].Optics Express,2016,24(26):A1560-A1570.
[6] JIA J,LI D X,JIA H S,et al.Effect of composition and package structure of bi-color flexible remote phosphor film on the properties of remote white LEDs[J].Optical Materials,2017,72:602-611.
[7] Luo X,Fu X,Chen F,et al.Phosphor self-heating in phosphor converted light emitting diode packaging[J].International Journal of Heat&Mass Transfer,2013,58(1-2):276-281.
[8] XU Chen,ZHENG Zhi-hang,LUO Jie,et al.Analysis of influential factors for white LED phosphor sedimentation[J].Automation&Information Engineering,2017,38(4):16-20.徐晨,郑志航,罗杰,等.白光LED荧光粉沉淀影响因素分析[J].自动化与信息工程,2017,38(4):16-20.
[9] LIU Yi-ming,ZOU Jun,LI Wen-bo,et al.Preparation and application in LED of phosphor film[J].Journal of Technology,2017,(3):207-212.刘岏明,邹军,李文博,等.荧光薄膜的制备方法及其在LED中的应用[J].应用技术学院学报,2017,(3):207-212.
[10]LI Jin-yu,XIE Bing,ZHANG Shao-hua.Effects of TiO2concentrations on the luminous properties of flip-chip white LED package[J].Journal of Nanchang University(Natural Science),2015,(1):56-59.李金玉,谢冰,章少华.TiO2含量对倒装LED白光封装的发光性能的影响[J].南昌大学学报(理科版),2015,(1):56-59.
[11]PANG Pei-yuan,WEN Shang-sheng,HUANG Ya-qi,et al.Design and research of the light mixing component for high-uniformity and ultra-thin direct-down LED panel light[J].Acta Photonica Sinica,2017,46(5):142-151.庞培元,文尚胜,黄雅琪,等.高均匀度超薄直下式LED平板灯混光元件的设计与研究[J].光子学报,2017,46(5):142-151.
[12]YAN Wen-ping,GUE Zhen-ning,LIN Jie-ben,et al.Directdown LED panel light design for uniform illumination[J].Journal of Optoelectronics·Laser,2014,25(10):1878-1885.颜稳萍,郭震宁,林介本,等.直下式LED平板灯的均匀照明设计[J].光电子.激光,2014,25(10):1878-1885.
[13]SEO J,KIM S,KIM Y,et al.Effect of glass refractive index on light extraction efficiency of light-emitting diodes[J].Journal of the American Ceramic Society,2014,97(9):2789-2793.
[14]LUO Tao,XU Zhe-wei,CHEN Qian-qian,et al.Research on remote phosphor layer optical design for the homogeneous angular color uniformity[J].Semiconductor Optoelectronics,2016,37(1):13-17.罗滔,徐哲炜,陈倩倩,等.均匀色角向分布的LED远荧光粉结构光学设计[J].半导体光电,2016,37(1):13-17.
[15]Meneghini M,Lago M D,Trivellin N,et al.Thermally activated degradation of remote phosphors for application in LED lighting[J].IEEE Transactions on Device&Materials Reliability,2013,13(1):316-318.
[16]Perera I U,Narendran N.Thermal management of the remote phosphor layer in LED systems[J].Proc.SPIE,2013,8835:883504.
[17]Xu J,Hassan D A,Zeng R J,et al.Lu3Al5O12:Ce@SiO2phosphor-in-glass:Its facile synthesis,reduced thermal/chemical degradation and application in high-power white LEDs[J].Journal of the European Ceramic Society,2016,36(8):2017-2025.
[18]WU Hua-sheng,Zhou Xiao-ping.Reduce the angle of LED chip:CN,104821354 A[P].2015-08-05.吴化胜,周小平.减小LED芯片发光角度的方法:中国,104821354 A[P].2015-08-05.
[19]SHENG Li-jun.Optical performance of single surface lighting white digital tubes wi th inverted chip[J].Journal of Optoelectronics·Laser,2018,29(2):138-142.盛立军.倒置芯片单面出光白光数码管的光色性能[J].光电子·激光,2018,29(2):138-142.
[20]CHE Zhen,ZHANG Jun,YU Xin-yu.Optical design and research on phosphors for white LED[J].Chinese Journal of Luminescence,2015(10):1220-1226.车振,张军,余新宇,等.白光LED荧光粉层的光学设计及研究[J].发光学报,2015,(10):1220-1226.