한국신뢰성학회지:신뢰성응용연구 (Journal of Applied Reliability)

  • 제18권1호
  • /
  • Pages.49-55
  • /
  • 2018
  • /
  • 1738-9895(pISSN)
  • /
  • 2733-8320(eISSN)
한국신뢰성학회 (The Korean Reliability Society)
권호 표지

LED 열화 데이터에 대한 정규화 방법에 대한 연구

Study on Normalization Method of LED Degradation Data

  • 정의효 (아주대학교 산업공학과) ;
  • 임홍우 (한국기계전기전자시험연구원) ;
  • 형재필 (한국기계전기전자시험연구원) ;
  • 정창욱 (아주대학교 산업공학과) ;
  • 조정하 (아주대학교 산업공학과) ;
  • 장중순 (아주대학교 산업공학과)
  • 투고 : 2017.12.27
  • 심사 : 2018.03.09
  • 발행 : 2018.03.25
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초록

Purpose: To propose improved method for normalization, compare to the de facto international standard which is IESNA TM-21 or conventional normalization methods. Methods: Firstly, we analysed conventional methods and specified the problem of normalization method which is based on first measured data. Secondly, we proposed our approach which is based on the design specification. Lastly, we studied a real degradation data which is conducted for 15,000 hours. Conclusion: Proposed normalization method is better approach because it can reflect real data and design specification, and reduce distortion when analysing degradation data. Also, It is appliable to other long-life reliability items.

키워드

참고문헌

  1. IESNA Light Source Committee (2005). "IESNA Technical Memorandum on Light Emitting Diode (LED) Sources and Systems". p. 001
  2. IESNA The Subcomittee on Solid State Lighting of the IES Testing Procedures Committee (2008). "IES Approved Method for Measuring Lumen Maintenance of LED Light Sources".
  3. IESNA The Subcomittee on Solid State Lighting of the IES Testing Procedures Committee (2011). "Projecting Long Term Lumen Maintenance of LED Light Sources".
  4. Fan, J., Yung, K. C., and Pecht, M. (2012). "Lifetime estimation of high-power white LED using degradation-data-driven method". IEEE Transactions on Device and Materials Reliability, Vol. 12, No. 2, pp. 470-477. https://doi.org/10.1109/TDMR.2012.2190415
  5. Wang, F. K. and Lu, Y. C. (2014). "Useful lifetime analysis for high-power white LEDs". Microelectronics Reliability, Vol. 54, pp. 1307-1315. https://doi.org/10.1016/j.microrel.2014.02.029
  6. EnergyStar (2017). "Philips Color Kinetics - 523-000090-80". https://www.energystar.gov/productfinder/product/certified-light-fixtures/details/2280030 (11 Nov. 2017).