Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Lifetime Estimation for BLU LED

BLU(Back light Unit) 용 LED 의 수명예측

  • 김민표 (한양대학교 대학원 전자통신컴퓨터공학부) ;
  • 김재중 (한양대학교 신뢰성분석연구센터 (RARC)) ;
  • 장석원 (한양대학교 신뢰성분석연구센터 (RARC)) ;
  • 곽계달 (한양대학교 전자전기컴퓨터공학부)
  • Published : 2008.11.05
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Abstract

This study has explained about LED for BLU which is widely used in the kinds of display devices or lighting. It was shown that the open due to delamination were the dominant LED for BLU failure mode and mechanisms from failure analysis of LED samples. Then, we have defined failure as yellowing and 100% reduction of light output intensity of LED for BLU and acceleration factors as temperature and current in Accelerated Life Test(ALT). Finally, we have estimated the Weibull distribution, life-stress relationship, and accelerating factor is used by ALTA Software.

Keywords