Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes

Optics Express

Volumn 20, Issue 5, 2012, Pages 5092-5098

  Zheng, Huai ^a,b   Luo, Xiaobing ^a,b   Hu, Run ^a,b   Cao, Bin ^a   Fu, Xing ^a,b   Wang, Yiman ^a,b   Liu, Sheng ^a,b  

^a HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY   (China)

^b HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

CHIP SCALE PACKAGES; COATINGS; COLOR; FIXTURES (TOOLING); LIGHT EMITTING DIODES; MICROCHANNELS; MIXTURES; PACKAGING; PHOSPHORS; SILICONES; SURFACE TENSION;

COATING METHODS; COLOR DEVIATIONS; COLOR UNIFORMITY; PHOSPHOR PARTICLES; SURFACE TENSION EFFECTS; TEST SAMPLES; WHITE LIGHT EMITTING DIODES;

LIGHT EMISSION;

PHOSPHORUS;

ARTICLE; ARTIFACT; CHEMISTRY; COLOR; EQUIPMENT; EQUIPMENT DESIGN; ILLUMINATION; INSTRUMENTATION; OPTICAL INSTRUMENTATION; SEMICONDUCTOR;

ARTIFACTS; COLOR; EQUIPMENT DESIGN; EQUIPMENT FAILURE ANALYSIS; LENSES; LIGHTING; PHOSPHORUS; SEMICONDUCTORS;

EID: 84857571259     PISSN: None     EISSN: 10944087     Source Type: Journal    
DOI: 10.1364/OE.20.005092     Document Type: Article

References (18)

1. A. Zukauskas, M. S. Shur, and R. Caska, Introduction to Solid-State Lighting (John Wiley & Sons, 2002).
2. D. A. Steigerwald, J. C. Bhat, D. Collins, R. M. Fletcher, M. O. Holcomb, M. J. Ludowise, P. S. Martin, and S. L. Rudaz, "Illumination with solid state lighting technology," IEEE J Sel Top Quantum Electron. 8(2), 310-320 (2002). (Pubitemid 34678493)
3. S. Liu and X. B. Luo, LED Packaging for Lighting Applications: Design, Manufacturing and Testing (John Wiley & Sons, 2011).
4. F. M. Steranka, J. Bhat, D. Collins, L. Cook, M. G. Craford, R. Fletcher, N. Gardner, P. Grillot, W. Goetz, M. Keuper, R. Khare, A. Kim, M. Krames, G. Harbers, M. Ludowise, P. S. Martin, M. Misra, G. Mueller, R. Mueller-Mach, S. Rudaz, Y.-C. Shen, D. Steigerwald, S. Stockman, S. Subramanya, T. Trottier, and J. J. Wierer, "High power LEDs-Technology status and market applications," Phys. Status Solidi A. 194(2), 380-388 (2002).
5. K. Wang, X. B. Luo, Z. Y. Liu, B. Zhou, Z. Y. Gan, and S. Liu, "Optical analysis of an 80W light-emitting-diode street lamp," Opt. Eng. 47(1), 013002 (2008).
6. J. K. Kim and E. F. Schubert, "Transcending the replacement paradigm of solid-state lighting," Opt. Express 16(26), 21835-21842 (2008).
7. C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, "A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources," Opt. Mater. 31(6), 837-848 (2009).
8. N. T. Tran and F. G. Shi, "Studies of phosphor concentration and thickness for phosphor-based white light-emitting-diodes," J. Lightwave Technol. 26(21), 3556-3559 (2008).
9. Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, "Optical analysis of color distribution in white LEDs with various packaging methods," IEEE Photon. Technol. Lett. 20(24), 2027-2029 (2008).
10. Y. Shuai, Y. He, N. T. Tran, and F. G. Shi, "Angular CCT uniformity of phosphor converted white LEDs: effects of phosphor materials and packaging structures," IEEE Photon. Technol. Lett. 23(3), 137-139 (2011).
11. M. R. Krames, J. Bhat, D. Collins, N. F. Gardner, W. Gotz, C. H. Lowery, M. Ludowise, P. S. Martin, G. Mueller, R. Mueller-Mach, S. Rudaz, D. A. Steigerwald, S. A. Stockman, and J. J. Wierer, "High-power III-nitride emitters for solid-state lighting," Phys. Status Solidi A. 192, 237-245 (2002). (Pubitemid 34993220)
12. W. D. Collins, M. R. Krames, G. J. Verhoeckx, and N. J. M. Leth, "Using electrophoresis to produce a conformally coated phosphor-converted light emitting semiconductor," U.S. patent 6 576 488 (2003).
13. J. H. Yum, S. Y. Seo, S. Lee, and Y. E. Sung, "Comparison of Y3Al5O12:Ce0.05 phosphor coating methods for white light emitting diode on gallium nitride," Proc. SPIE 4445, 60-69 (2001).
14. B. Braune, K. Petersen, J. Strauss, P. Kromotis, and M. Kaempf, "A new wafer level coating technique to reduce the color distribution of LEDs," Proc. SPIE 6486, 68460x (2007).
15. H. T. Huang, C. C. Tsai, and Y. P. Huang, "Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs," Opt. Express 18(S2 Suppl 2), A201-A206 (2010).
16. C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, "On the requirements for achieving angular homogeneity in phosphor converted high power flip-chip light-emitting diodes," Jpn. J. Appl. Phys. 48(7), 070208 (2009).
17. M. Brinkmann, R. Blossey, S. Arscott, C. Druon, P. Tabourier, S. Le Gac, and C. Rolando, "Microfluidic design rules for capillary slot-based electrospray sources," Appl. Phys. Lett. 85(11), 2140-2142 (2004).
18. M. Brinkmann and R. Blossey, "Blobs, channels and "cigars" : morphologies of liquids at a step," Eur. Phys. J. E Soft Matter 14(1), 79-89 (2004). (Pubitemid 40877398)