Abstract

High efficiency white light-emitting diodes with superior color-mixing have been investigated. It is suggested that the patterned remote phosphor structure could improve the uniformity of angular-dependent correlated color temperature (CCT) and achieve high chromatic stability in wider operating current range, as compared to the conventional remote phosphor coating structure. In this experiment, we employed a pulse spray coating method to place the patterned phosphor on the package and to leave a window region. The window area, a clear space without coating of the phosphor not only increases the extraction efficiency of blue rays at large angle, but also improves the stability of angular-dependent CCT. Moreover, the CCT deviation could be reduced from 1320 K to 266 K by this patterned remote phosphor method, and the stray blue/yellow light within the package can be effectively reduced and controlled. The design was verified both experimentally and theoretically.

© 2011 OSA

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References

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  1. M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
    [CrossRef]
  2. N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
    [CrossRef]
  3. T. Nishida, T. Ban, and N. Kobayashi, “High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors,” Appl. Phys. Lett. 82(22), 3817–3819 (2003).
    [CrossRef]
  4. N. Narendran, “Improved performance white LED,” Proc. SPIE 5941, 1–6 (2005).
  5. M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
    [CrossRef]
  6. M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
    [CrossRef]
  7. B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
    [CrossRef]
  8. N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
    [CrossRef]
  9. J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
    [CrossRef]
  10. Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Analysis of Factors Affecting Color Distribution of White LEDs,” 2008 International Conference on Electronic Packaging Technology & High Density Packaging, Vols 1 and 2, 386–393 (2008).
  11. Z. Liu, S. Liu, K. Wang, and X. Luo, “Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
    [CrossRef]
  12. 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(S2Suppl 2), A201–A206 (2010).
    [CrossRef] [PubMed]
  13. S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
    [CrossRef]

2010 (4)

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

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(S2Suppl 2), A201–A206 (2010).
[CrossRef] [PubMed]

2008 (1)

Z. Liu, S. Liu, K. Wang, and X. Luo, “Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

2007 (2)

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

2005 (3)

N. Narendran, “Improved performance white LED,” Proc. SPIE 5941, 1–6 (2005).

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
[CrossRef]

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

2003 (1)

T. Nishida, T. Ban, and N. Kobayashi, “High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors,” Appl. Phys. Lett. 82(22), 3817–3819 (2003).
[CrossRef]

2001 (1)

N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
[CrossRef]

Ban, T.

T. Nishida, T. Ban, and N. Kobayashi, “High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors,” Appl. Phys. Lett. 82(22), 3817–3819 (2003).
[CrossRef]

Chen, J. C.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

Cho, J.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Craford, M. G.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Deng, L.

N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
[CrossRef]

Fan, B. F.

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

Freyssinier-Nova, J. P.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
[CrossRef]

Gu, Y.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
[CrossRef]

Harbers, G.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Huang, H. T.

Huang, Y. P.

Kim, J. K.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Kobayashi, N.

T. Nishida, T. Ban, and N. Kobayashi, “High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors,” Appl. Phys. Lett. 82(22), 3817–3819 (2003).
[CrossRef]

Krames, M. R.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Lin, M. T.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

Lin, M. Y.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

Liu, C. H.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

Liu, S.

Z. Liu, S. Liu, K. Wang, and X. 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.

Z. Liu, S. Liu, K. Wang, and X. Luo, “Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Luo, H.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Luo, X.

Z. Liu, S. Liu, K. Wang, and X. Luo, “Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Ma, Y. Y.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

Maliyagoda, N.

N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
[CrossRef]

Mueller, G. O.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Mueller-Mach, R.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Narendran, N.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
[CrossRef]

N. Narendran, “Improved performance white LED,” Proc. SPIE 5941, 1–6 (2005).

N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
[CrossRef]

Nishida, T.

T. Nishida, T. Ban, and N. Kobayashi, “High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors,” Appl. Phys. Lett. 82(22), 3817–3819 (2003).
[CrossRef]

Pan, Y. X.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

Park, Y.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Pysar, R.

N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
[CrossRef]

Schubert, E. F.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Shchekin, O. B.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Sone, C.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Sun, C. C.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

Tai, K. Y.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

Tai, S. C.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

Tsai, C. C.

Wang, G.

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

Wang, K.

Z. Liu, S. Liu, K. Wang, and X. Luo, “Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

Wu, H.

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

Xian, Y. L.

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

Xiao, F.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

Ye, S.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

Ying, S. P.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

Zhang, Q. Y.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

Zhao, Y.

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

Zhou, L.

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Zhu, Y.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
[CrossRef]

Appl. Phys. Lett. (1)

T. Nishida, T. Ban, and N. Kobayashi, “High-color-rendering light sources consisting of a 350-nm ultraviolet light-emitting diode and three-basal-color phosphors,” Appl. Phys. Lett. 82(22), 3817–3819 (2003).
[CrossRef]

IEEE Photon. Technol. Lett. (3)

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring Remote Phosphor Structure for Phosphor-Converted White LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[CrossRef]

B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, and G. Wang, “Study of phosphor thermal-isolated packaging technologies for high-power white light-emitting diodes,” IEEE Photon. Technol. Lett. 19(15), 1121–1123 (2007).
[CrossRef]

Z. Liu, S. Liu, K. Wang, and X. Luo, “Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[CrossRef]

J. Disp. Technol. (1)

M. R. Krames, O. B. Shchekin, R. Mueller-Mach, G. O. Mueller, L. Zhou, G. Harbers, and M. G. Craford, “Status and future of high-power light-emitting diodes for solid-state lighting,” J. Disp. Technol. 3(2), 160–175 (2007).
[CrossRef]

Jpn. J. Appl. Phys. (2)

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes,” Jpn. J. Appl. Phys. 49(7), 072101 (2010).
[CrossRef]

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), 649–651 (2005).
[CrossRef]

Mater. Sci. Eng. Rep. (1)

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: Recent advances in material, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[CrossRef]

Opt. Express (1)

Phys. Status Solidi (1)

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi 202(6), 60–62 (2005) (a).
[CrossRef]

Proc. SPIE (2)

N. Narendran, N. Maliyagoda, L. Deng, and R. Pysar, “Characterizing LEDs for general illumination applications: mixed-color and phosphor-based white sources,” Proc. SPIE 4445, 137–147 (2001).
[CrossRef]

N. Narendran, “Improved performance white LED,” Proc. SPIE 5941, 1–6 (2005).

Other (1)

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Analysis of Factors Affecting Color Distribution of White LEDs,” 2008 International Conference on Electronic Packaging Technology & High Density Packaging, Vols 1 and 2, 386–393 (2008).

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Figures (6)

Fig. 1
Fig. 1

X-ray perspectives of two phosphor distribution models: (a) conventional remote phosphor structure, showing phosphor on top of the encapsulant surface (b) patterned remote phosphor structure, leaving a window region without spraying phosphor.

Fig. 2
Fig. 2

The angular-dependent correlated color temperature of two phosphor distribution structures.

Fig. 3
Fig. 3

The current-dependent luminous efficacy and luminous flux of the pc-WLEDs with conventional remote phosphor and patterned remote phosphor structures.

Fig. 4
Fig. 4

The color chromaticity deviations of the LED with conventional remote phosphor and patterned remote phosphor structures with different LED injection current.

Fig. 5
Fig. 5

The ray tracing simulation results: (a) The left is conventional remote phosphor structure (with thin phosphor coating on package entire surface) and (b) the right is patterned remote phosphor structure (with thicker phosphor coating only in the center region).

Fig. 6
Fig. 6

The angular-dependent intensity ratio of yellow to blue rays. The conventional remote phosphor structure has serious ratio deviation. However, the patterned remote phosphor structure keeps high consistency even at the divergent angle close to 70 degrees.

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