Light Emitting Diode (LED) begins to be applied as backlight system in a flat panel display because of local dimming function, wide color gamut, longer lifetime and environmental-friendly feature. The performance of LED device is strongly dependent on the operating temperature, however, the operation beyond temperature limit could cause the luminosity decrease, wavelength shift and lifetime decrease including failure of electrode soldering in the package. Therefore, the thermal management in a LED backlight system is crucial to guarantee the image quality and the reliability of the display. However, narrow volume of flat panel displays cause low convective heat transfer showing non-uniform temperature distribution over the panel. It deteriorates the image quality that the inherent temperature difference over the flat panel display backlight system. The objective of present study aimed to investigate the effect of LED alignment in a direct-illuminating type backlight system. It is discussed thermal characteristics of backlights in flat panel with LED light source and evaluated performance of the heat spreading system to ensure the reliability of LED backlight system.
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ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference
July 8–12, 2007
Vancouver, British Columbia, Canada
Conference Sponsors:
- Electronic and Photonic Packaging Division
ISBN:
0-7918-4277-0
PROCEEDINGS PAPER
Thermal Characteristics of LED Light Source in Flat Panel Display Backlight System Available to Purchase
Sung Ki Kim,
Sung Ki Kim
Samsung Electronics, Suwon, South Korea
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Joon Kang,
Joon Kang
Samsung Electronics, Suwon, South Korea
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Seo Young Kim
Seo Young Kim
Korea Institute of Science and Technology, Seoul, South Korea
Search for other works by this author on:
Sung Ki Kim
Samsung Electronics, Suwon, South Korea
Joon Kang
Samsung Electronics, Suwon, South Korea
Seo Young Kim
Korea Institute of Science and Technology, Seoul, South Korea
Paper No:
IPACK2007-33913, pp. 273-276; 4 pages
Published Online:
January 8, 2010
Citation
Kim, SK, Kang, J, & Kim, SY. "Thermal Characteristics of LED Light Source in Flat Panel Display Backlight System." Proceedings of the ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASME 2007 InterPACK Conference, Volume 1. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 273-276. ASME. https://doi.org/10.1115/IPACK2007-33913
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