Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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NUMERICAL ANALYSIS FOR CONDUCTION HEAT TRANSFER AND APPRAISAL OF PERFORMANCE INDICES IN LED MONITOR FOR LAPTOP COMPUTER

노트북 LED 영상장치 내부의 전도열전달 해석과 성능 지수 평가

  • 박일석 (경북대학교 기계공학부) ;
  • 손창현 (경북대학교 기계공학부) ;
  • 손동현 (경북대학교 대학원 기계공학부) ;
  • 백성민 (LG디스플레이(주)) ;
  • 박철 (LG디스플레이(주))
  • Received : 2011.06.13
  • Accepted : 2011.09.21
  • Published : 2011.09.30
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Abstract

Dark Mura phenomena which can happen at the region with high temperature gradient in a Notebook LCD Monitor using LED light source has numerically been studied. The calculation was conducted under the nearly realistic conditions by considering the anisotropic thermal properties of materials and the real dimensions of each component. The two performance indices of LED monitor, i.e., the maximum temperature and the spacial gradient of temperature were examined for the various shapes, lengths and thickness of heat sink plate. Calculated results give more reasonable temperature distribution comparing with experimental results.

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References

  1. 2009, 김운호, 백종석, "Industry Report : LED 산업" Initiating Coverage.
  2. 2009, L.-C. Chen and C.-C. Kuo, "Automatic TFT-LCD mura defect inspection using discrete cosine transform-based background filtering and 'just noticeable difference' quantification strategies," Measurement Science and Technology, Vol.19, pp.1-10.
  3. 2006, K. Taniguchi, K. Ueta, and S. Tatsumi, "A mura detection method," Pattern Recognition, Vol.39, pp.1044-1052. https://doi.org/10.1016/j.patcog.2005.07.007
  4. 2008, S. M. Chao and D. M. Tsai, "An anisotropic diffusion-based defect detection for low-contrast glass substrates," Image and Vision Compute, Vol.26, pp.187-200. https://doi.org/10.1016/j.imavis.2007.03.003
  5. 2010, Wei-Chen Li and Du-Ming Tsai, "Defect Inspection in Low-Contrast LCD Images Using Hough Transform-Based Nonstationary Line Detection," IEEE. pp.1551-3203.
  6. 2004, W. S. Kim, D. M. Kwak, Y. C. Song, D. H. Choi, and K. H. Park, "Detection of spot-type defects on liquid crystal modules," Key Eng. Mater, Vol.270-273, pp.808-813. https://doi.org/10.4028/www.scientific.net/KEM.270-273.808
  7. 1989, J. Wilder, "Finding and Evaluating Defects in Glass," in Machine Vision for Inspection and Measurement, H. Freeman, Ed. New York: Academic Press.
  8. 2011, 박일석, 손창현, "NBPC LED 모델의 열전달 현상규명 및 개선" LG 디스플레이(주) 연구과제보고서.
  9. 2010, ANSYS, "ANSYS CFD Training Manual", TAE SUNG SOFTWARE & ENGINEERING, INC.