Prognostics & System Health Management Conference, Shenzhen, China, pp.1-5, May 24 - 25, 2011.

Failure Modes, Mechanisms, and Effects Analysis for LED Back-light Systems used in LCD TV's

Jiajie Fana, K.C.Yunga and Michael Pechtb
aDepartment of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China
bPrognostics and Health Management Centre, City University of Hong Kong, Hong Kong, China


Compared to conventional light sources, LED back-light systems, consisted by LED back-light units (BLUs) and drivers, provide a wide range of performance benefits for Liquid crystal display (LCD) TVs. And the failure of this electronic system directly determines the life of LCD TVs. So the growing interests have been focused on the prognostic and health management (PHM) for this electronic system. As the first step of physics-of-failure (PoF) based PHM approach widely used in reliability assessment, failure modes, mechanisms, and effects analysis (FMMEA) was used in this paper to identify the potential failure mechanisms and associated failure sides in LED back-light systems.

Keywords : FMMEA; LED Back-light; LCD TVs; Electronic Assembly

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