Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Optical Properties as Process Condition of Color Conversion Lens Using Low-softening Point Glass for White LED

백색 LED용 저 연화점 유리를 이용한 색 변환 렌즈의 제조 조건에 따른 광 특성

  • Chae, Yoo-Jin (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team) ;
  • Lee, Mi-Jai (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team) ;
  • Hwang, Jong-Hee (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team) ;
  • Lim, Tae-Young (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team) ;
  • Kim, Jin-Ho (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team) ;
  • Jeong, Hee-Suk (Korea Institute of Lighting Technology, Convergent Design Team) ;
  • Lee, Young-Sik (Solleds Co. Ltd., R&D Center) ;
  • Kim, Deug-Joong (Department of Materials science and Engineering, Sungkyunkwan University)
  • 채유진 (한국세라믹기술원 광디스플레이소재팀) ;
  • 이미재 (한국세라믹기술원 광디스플레이소재팀) ;
  • 황종희 (한국세라믹기술원 광디스플레이소재팀) ;
  • 임태영 (한국세라믹기술원 광디스플레이소재팀) ;
  • 김진호 (한국세라믹기술원 광디스플레이소재팀) ;
  • 정희석 (조명연구원 연구개발본부 융합디자인팀) ;
  • 이영식 (솔레즈 연구소) ;
  • 김득중 (성균관대학교 신소재공학과)
  • Received : 2013.10.02
  • Accepted : 2013.11.16
  • Published : 2013.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, remote phosphors have been reported for application to white LEDs to provide enhanced phosphor efficiency compared with conventional phosphor-based white LEDs. In this study, a remote phosphor was produced by coating via screen printing on a glass substrate with different numbers of phosphor coating. The paste consists of phosphor, lowest softening glass frits, and organic binders. The remote phosphor could be well controlled by varying the phosphor content rated paste. After mounting the remote phosphor on top of a blue LED chip, CCT, CRI, and luminance efficiency were measured and values of 5300 K, 62, and 117 lm/W were respectively obtained in the 80 wt% phosphor with 3 coating layers sintered at $800^{\circ}C$.

Keywords

References

  1. B. M. Song, B. T. Han, and J. H. Lee, "Optimum Design Domain of LED-based Solid State Lighting Considering Cost, Energy Consumption and Realiability," Microelectron. Reliab., 53 [3] 435-42 (2013). https://doi.org/10.1016/j.microrel.2012.10.010
  2. J. Li, Q. Chen, W. Wu, D. X iao, and J. Zhu, "Densification and Optical Properties of Transparent Ho:YAG Ceramics," J. Optic., Mater., 35 [4] 748-52 (2013). https://doi.org/10.1016/j.optmat.2012.08.005
  3. B. L. Ahn, C. Y. Jang, S. B. Leigh, S. H. Yoo, and H. G. Jeong, "Effect of LED Lighting on the Cooling and Heating Loads in Office Buildings," Appl. Energy, 113 1484-89 (2014). https://doi.org/10.1016/j.apenergy.2013.08.050
  4. M. Maaspuro and A. Tuominen, "Thermal Analysis of LED Spot Lighting Device Operating in External Natural or Forced Heat Convection," Microelectron. Reliab., 53 [3] 428-34 (2013). https://doi.org/10.1016/j.microrel.2012.10.004
  5. S. Nishiura, S. Tanabe, K. Fujioka, and Y. Fujimoto, "Properties of Transparent Ce: YAG Ceramic Phosphors for White LED," J. Optic., Mater., 33 688-91 (2011). https://doi.org/10.1016/j.optmat.2010.06.005
  6. Y. J. Kim and S. M. Park, "$Eu^{2+},\;Mn^{2+}$ Co-doped $Ba_9Y_2Si_6O_{24}$ Phosphors Based on Near-UV-excitable LED Lights," J. Mater., Rea., Bull., 49 469-74 (2014). https://doi.org/10.1016/j.materresbull.2013.09.035
  7. M. Meneghini, L. -R. Trevisanello, G. Meneghesso, E. Zanoni, "A Review on the Reliability of Gan-Based LEDs," IEEE Trans Dev Mater Reliab, 8 [2] 323-31 (2008) https://doi.org/10.1109/TDMR.2008.921527
  8. N. Narendran, Y. Gu, J. P. Freyssinier-Nova, Y. Zhu, "Extracting Phosphor-Scattered Photons to Improve White LED Efficiency," Phys Stat Sol A 202 [6] R60-2 (2005) https://doi.org/10.1002/pssa.200510015
  9. B. F. Fan, H. Wu, Y. Zhao, Y. L. Xian, G. Wang, "Study of Phosphor Thermal-Isolated Packaging Technologies for High-Power White Light-Emitting Diodes," IEEE Photon TechnolLett, 19 [15] 1121-23 (2007) https://doi.org/10.1109/LPT.2007.901098
  10. Z. Y. Liu, S. Liu, K. Wang, X. B. Luo, "Optical Analysis of Color Distribution in White LEDs with Various Packaging Methods," IEEE Photon TechnolLett, 20 [24] 2027-029 (2008) https://doi.org/10.1109/LPT.2008.2005998
  11. J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, Y. Park, "Strongly Enhanced Phosphor Efficiency in GaInN White Light-Emitting Diodes using Remote Phosphor Configuration and Diffuse Reflector Cup," Jpn. J. Appl. Phys. Part. 2 Letter., 44 [20-23] L649-L651 (2005) https://doi.org/10.1143/JJAP.44.L649
  12. C. T. LEE and T. J. Wu, "Light Distribution and Light Extraction Improvement Mechanisms of Remote GaN-based White Light-emitting-diodes Using ZnO Nanorod Array," J. Lumin., 137 143-47 (2013). https://doi.org/10.1016/j.jlumin.2012.12.057
  13. O. Koichi, "Organic Chemical Products Company, Daicel Chemical Industries, Co., LTD," Jpn. J. Inst. Elec., 8 17 (2010)
  14. M. D. Lago, M. Meneghini, N. Trivellin, G. Mura, M. Vanzi, G. Meneghesso, and E. Zanoni, "Phosphor for LED-based Light Sources: Thermal Properties and Reliability Issues," J. Microelectron, Reliab., 52 2164-67 (2012). https://doi.org/10.1016/j.microrel.2012.06.036
  15. H. -S. jeong, J. -G. Lee, H. -L. kang, M. -K. Hwang, M. -J. Lee, J. -H. Kim, Y. -J. Chae, and Y. -S. Lee, "Evaluation of White LED Package Characteristics in Remote Phosphor Structure Depending on Phosphor Coatings," J. KIEEME, 26 [4] 330-34 (2013) https://doi.org/10.4313/JKEM.2013.26.4.330

Cited by

  1. Phosphor-in-glass thick film formation with low sintering temperature phosphosilicate glass for robust white LED vol.100, pp.4, 2017, https://doi.org/10.1111/jace.14733
  2. 백색 LED용 색변환 렌즈의 열처리 온도 및 코팅 두께에 따른 영향 vol.51, pp.6, 2013, https://doi.org/10.4191/kcers.2014.51.6.533
  3. Review-A Review on Phosphor in Glass as a High Power LED Color Converter vol.9, pp.1, 2013, https://doi.org/10.1149/2.0142001jss