Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study of Brightness and Residual Stresses Depending on Thickness of LCD Light Guide Plate

LCD 도광판 두께에 따른 휘도 및 잔류응력에 관한 연구

  • 이중원 (명지대학교 기계공학과대학원) ;
  • 박명균 (명지대학교 기계공학과) ;
  • 김정훈 (연세대학교 사회환경시스템공학부)
  • Published : 2008.09.01
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Abstract

Light guide plate is one of most important components which are composed of back light unit, affecting the quality and performance of LCD. Average brightness and uniformity are especially key factors for designing the light guide unit. These qualities are affected and controlled by the pattern being attached to the back of light guide unit. In order to obtain high brightness and uniformity the optimized pattern design is adopted for LGP. In this study, optimized molding condition for LGP with 0.4 mm thickness was obtained by using the Moldflow simulation software and the optimized pattern for better brightness uniformity was designed for the thickness of the 0.4 mm by trial and error method. The brightness was measured for the different LGP thicknesses and the residual stress analysis was performed for 0.4 mmthickness by the photoelasticity and the results are compared with 0.5 mm, 0.6 mm thickness.

Keywords

References

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