Abstract

Angular color uniformity (ACU) is one of the most important optical parameters of white lighting emitting diodes (LEDs). In this paper, we proposed a kind of phosphor coating method to enhance ACU of phosphor-converted white LEDs with conventional chips by the combination of substrate structure design and phosphor dip-transfer coating. Through this method, compact and optimal phosphor layer arrangements for high ACU can be realized. Optical simulations and experiments were conducted to examine its ACU performance. Compared with conventional phosphor dispensing coating, the present method shows very high ACU performance. Extremely small angular correlated color temperature (CCT) deviations were obtained, which are less than 200K at average CCTs ranging from 4000K to 6000K.

© 2013 OSA

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  1. S. Liu and X. B. Luo, LED Packaging for Lighting Applications: Design, Manufacturing and Testing (John Wiley & Sons, USA, 2011).
  2. A. Zukauskas, M. S. Shur, and R. Caska, Introduction to Solid-state Lighting (John Wiley & Sons, USA, 2002).
  3. Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
    [CrossRef]
  4. R. Hu, X. B. Luo, “A model for calculating the bidirectional scattering properties of phosphor layer in white light-emitting diodes,” J. Lightwave Technol. 30(21), 3376–3380 (2012).
    [CrossRef]
  5. Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
    [CrossRef]
  6. B. L. Wu, X. B. Luo, H. Zheng, S. Liu, “Effect of gold wire bonding process on angular correlated color temperature uniformity of white light-emitting diode,” Opt. Express 19(24), 24115–24121 (2011).
    [CrossRef] [PubMed]
  7. R. Hu, X. B. Luo, H. Zheng, Z. Qin, Z. Q. Gan, B. L. Wu, S. Liu, “Design of a novel freeform lens for LED uniform illumination and conformal phosphor coating,” Opt. Express 20(13), 13727–13737 (2012).
    [CrossRef] [PubMed]
  8. Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
    [CrossRef]
  9. H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
    [CrossRef] [PubMed]
  10. H. Zheng, X. Fu, R. Hu, S. Liu, and X. B. Luo, “Angular color uniformity improvement for phosphor-converted white light-emitting diodes by optimizing remote coating phosphor geometry,” 13th International Conference on Electronic Packaging Technology & High Density Packaging, Guilin, China, 1483–1486(2012).
  11. C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
    [CrossRef]
  12. C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
    [CrossRef]
  13. C. C. Sun, C. Y. Chen, C. C. Chen, C. Y. Chiu, Y. N. Peng, Y. H. Wang, T. H. Yang, T. Y. Chung, C. Y. Chung, “High uniformity in angular correlated-color-temperature distribution of white LEDs from 2800K to 6500K,” Opt. Express 20(6), 6622–6630 (2012).
    [CrossRef] [PubMed]
  14. K. Wang, D. Wu, F. Chen, Z. Y. Liu, X. B. Luo, S. Liu, “Angular color uniformity enhancement of white light-emitting diodes integrated with freeform lenses,” Opt. Lett. 35(11), 1860–1862 (2010).
    [CrossRef] [PubMed]
  15. 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 B2 (2003).
  16. J. H. Yum, S. Y. Seo, S. Lee, 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).
    [CrossRef]
  17. B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
    [CrossRef]
  18. H. T. Huang, C. C. Tsai, Y. P. Huang, “Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs,” Opt. Express 18(S2Suppl 2), A201–A206 (2010).
    [CrossRef] [PubMed]
  19. C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
    [CrossRef]
  20. H. Zheng, X. B. Luo, “Correlated color temperature consistency enhancement of white light-emitting diodes through substrate structure design,” IEEE Photon. Technol. Lett. 25, 484–487 (2013).
    [CrossRef]
  21. A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
    [CrossRef]
  22. H. Zheng, S. Liu, X. B. Luo, “Enhancing angular color uniformity of phosphor-converted white light-emitting diodes by phosphor dip-transfer coating,” J. Lightwave Technol. 31(12), 1987–1993 (2013).
    [CrossRef]
  23. Z. Y. Liu, K. Wang, X. B. Luo, S. Liu, “Precise optical modeling of blue light-emitting diodes by Monte Carlo ray-tracing,” Opt. Express 18(9), 9398–9412 (2010).
    [CrossRef] [PubMed]

2013 (2)

H. Zheng, X. B. Luo, “Correlated color temperature consistency enhancement of white light-emitting diodes through substrate structure design,” IEEE Photon. Technol. Lett. 25, 484–487 (2013).
[CrossRef]

H. Zheng, S. Liu, X. B. Luo, “Enhancing angular color uniformity of phosphor-converted white light-emitting diodes by phosphor dip-transfer coating,” J. Lightwave Technol. 31(12), 1987–1993 (2013).
[CrossRef]

2012 (6)

2011 (1)

2010 (3)

2009 (2)

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

2008 (2)

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

2007 (1)

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

2001 (1)

J. H. Yum, S. Y. Seo, S. Lee, 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).
[CrossRef]

2000 (1)

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

Braune, B.

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

Cao, B.

Chen, C. C.

Chen, C. Y.

Chen, F.

Chiu, C. Y.

Chung, C. Y.

Chung, T. Y.

Darhuber, A. A.

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

Davis, J. M.

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

Fu, X.

Gan, Z. Q.

Hartmann, P.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Hu, R.

Huang, H. T.

Huang, Y. P.

Kaempf, M.

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

Krenn, J. R.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

Kromotis, P.

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

Lee, S.

J. H. Yum, S. Y. Seo, S. Lee, 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).
[CrossRef]

Leising, G.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Li, C.

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
[CrossRef]

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
[CrossRef]

Liu, S.

H. Zheng, S. Liu, X. B. Luo, “Enhancing angular color uniformity of phosphor-converted white light-emitting diodes by phosphor dip-transfer coating,” J. Lightwave Technol. 31(12), 1987–1993 (2013).
[CrossRef]

R. Hu, X. B. Luo, H. Zheng, Z. Qin, Z. Q. Gan, B. L. Wu, S. Liu, “Design of a novel freeform lens for LED uniform illumination and conformal phosphor coating,” Opt. Express 20(13), 13727–13737 (2012).
[CrossRef] [PubMed]

H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
[CrossRef] [PubMed]

B. L. Wu, X. B. Luo, H. Zheng, S. Liu, “Effect of gold wire bonding process on angular correlated color temperature uniformity of white light-emitting diode,” Opt. Express 19(24), 24115–24121 (2011).
[CrossRef] [PubMed]

K. Wang, D. Wu, F. Chen, Z. Y. Liu, X. B. Luo, S. Liu, “Angular color uniformity enhancement of white light-emitting diodes integrated with freeform lenses,” Opt. Lett. 35(11), 1860–1862 (2010).
[CrossRef] [PubMed]

Z. Y. Liu, K. Wang, X. B. Luo, S. Liu, “Precise optical modeling of blue light-emitting diodes by Monte Carlo ray-tracing,” Opt. Express 18(9), 9398–9412 (2010).
[CrossRef] [PubMed]

Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Liu, Z. Y.

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
[CrossRef]

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
[CrossRef]

Z. Y. Liu, K. Wang, X. B. Luo, S. Liu, “Precise optical modeling of blue light-emitting diodes by Monte Carlo ray-tracing,” Opt. Express 18(9), 9398–9412 (2010).
[CrossRef] [PubMed]

K. Wang, D. Wu, F. Chen, Z. Y. Liu, X. B. Luo, S. Liu, “Angular color uniformity enhancement of white light-emitting diodes integrated with freeform lenses,” Opt. Lett. 35(11), 1860–1862 (2010).
[CrossRef] [PubMed]

Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Luo, X. B.

H. Zheng, S. Liu, X. B. Luo, “Enhancing angular color uniformity of phosphor-converted white light-emitting diodes by phosphor dip-transfer coating,” J. Lightwave Technol. 31(12), 1987–1993 (2013).
[CrossRef]

H. Zheng, X. B. Luo, “Correlated color temperature consistency enhancement of white light-emitting diodes through substrate structure design,” IEEE Photon. Technol. Lett. 25, 484–487 (2013).
[CrossRef]

R. Hu, X. B. Luo, H. Zheng, Z. Qin, Z. Q. Gan, B. L. Wu, S. Liu, “Design of a novel freeform lens for LED uniform illumination and conformal phosphor coating,” Opt. Express 20(13), 13727–13737 (2012).
[CrossRef] [PubMed]

H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
[CrossRef] [PubMed]

R. Hu, X. B. Luo, “A model for calculating the bidirectional scattering properties of phosphor layer in white light-emitting diodes,” J. Lightwave Technol. 30(21), 3376–3380 (2012).
[CrossRef]

B. L. Wu, X. B. Luo, H. Zheng, S. Liu, “Effect of gold wire bonding process on angular correlated color temperature uniformity of white light-emitting diode,” Opt. Express 19(24), 24115–24121 (2011).
[CrossRef] [PubMed]

K. Wang, D. Wu, F. Chen, Z. Y. Liu, X. B. Luo, S. Liu, “Angular color uniformity enhancement of white light-emitting diodes integrated with freeform lenses,” Opt. Lett. 35(11), 1860–1862 (2010).
[CrossRef] [PubMed]

Z. Y. Liu, K. Wang, X. B. Luo, S. Liu, “Precise optical modeling of blue light-emitting diodes by Monte Carlo ray-tracing,” Opt. Express 18(9), 9398–9412 (2010).
[CrossRef] [PubMed]

Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Miller, S. M.

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

Niu, H. B.

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
[CrossRef]

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
[CrossRef]

Pachler, P.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Peng, Y. N.

Petersen, K.

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

Qin, Z.

Schweighart, M.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Seo, S. Y.

J. H. Yum, S. Y. Seo, S. Lee, 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).
[CrossRef]

Sommer, C.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Strauss, J.

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

Sun, C. C.

Sung, Y. E.

J. H. Yum, S. Y. Seo, S. Lee, 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).
[CrossRef]

Tasch, S.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

Troian, S. M.

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

Tsai, C. C.

Wagner, S.

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

Wang, K.

Wang, Y. H.

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
[CrossRef]

C. C. Sun, C. Y. Chen, C. C. Chen, C. Y. Chiu, Y. N. Peng, Y. H. Wang, T. H. Yang, T. Y. Chung, C. Y. Chung, “High uniformity in angular correlated-color-temperature distribution of white LEDs from 2800K to 6500K,” Opt. Express 20(6), 6622–6630 (2012).
[CrossRef] [PubMed]

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
[CrossRef]

Wang, Y. M.

Wenzl, F. P.

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Wu, B. L.

Wu, D.

Yang, T. H.

Yu, B. H.

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
[CrossRef]

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
[CrossRef]

Yum, J. H.

J. H. Yum, S. Y. Seo, S. Lee, 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).
[CrossRef]

Zheng, H.

IEEE J. Sel. Top. Quantum Electron. (1)

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, F. P. Wenzl, “The effect of the phosphor particle sizes on the angular homogeneity of phosphor-converted high-power white LED light sources,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1181–1188 (2009).
[CrossRef]

IEEE Photon. Technol. Lett. (4)

C. Sommer, F. P. Wenzl, P. Hartmann, P. Pachler, M. Schweighart, G. Leising, “Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations,” IEEE Photon. Technol. Lett. 20(9), 739–741 (2008).
[CrossRef]

Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Uniform white emission of WLEDs realized by multilayer phosphor with pyramidal shape and inversed concentration distribution,” IEEE Photon. Technol. Lett. 24(17), 1558–1560 (2012).
[CrossRef]

H. Zheng, X. B. Luo, “Correlated color temperature consistency enhancement of white light-emitting diodes through substrate structure design,” IEEE Photon. Technol. Lett. 25, 484–487 (2013).
[CrossRef]

J. Appl. Phys. (1)

A. A. Darhuber, S. M. Troian, J. M. Davis, S. M. Miller, S. Wagner, “Selective dip-transfer coating of chemically micropatterned surfaces,” J. Appl. Phys. 88(9), 5119–5126 (2000).
[CrossRef]

J. Disp. Technol. (1)

Z. Y. Liu, C. Li, B. H. Yu, Y. H. Wang, H. B. Niu, “Effects of YAG: Ce phosphor particle size on luminous flux and angular color uniformity of phosphor-converted white LEDs,” J. Disp. Technol. 8(6), 329–335 (2012).
[CrossRef]

J. Lightwave Technol. (2)

Jpn. J. Appl. Phys. (1)

C. Sommer, J. R. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, 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).
[CrossRef]

Opt. Express (6)

Opt. Lett. (1)

Proc. SPIE (2)

J. H. Yum, S. Y. Seo, S. Lee, 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).
[CrossRef]

B. Braune, K. Petersen, J. Strauss, P. Kromotis, M. Kaempf, “A new wafer level coating technique to reduce the color distribution of LEDs,” Proc. SPIE 6486, 68460X (2007).
[CrossRef]

Other (4)

S. Liu and X. B. Luo, LED Packaging for Lighting Applications: Design, Manufacturing and Testing (John Wiley & Sons, USA, 2011).

A. Zukauskas, M. S. Shur, and R. Caska, Introduction to Solid-state Lighting (John Wiley & Sons, USA, 2002).

H. Zheng, X. Fu, R. Hu, S. Liu, and X. B. Luo, “Angular color uniformity improvement for phosphor-converted white light-emitting diodes by optimizing remote coating phosphor geometry,” 13th International Conference on Electronic Packaging Technology & High Density Packaging, Guilin, China, 1483–1486(2012).

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 B2 (2003).

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