Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Analysis on the Fracture of a Panel Glass in a Liquid Crystal Display Module under Mechanical Shock

액정 디스플레이(LCD)의 패널유리 파손평가에 관한 연구

  • 박상후 (LG생산기술원 디자인엔지니어링센터) ;
  • 이부윤 (계명대학교 자동차공학부) ;
  • 엄윤용 (한국과학기술원 기계공학과)
  • Published : 2000.12.01
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Abstract

Analysis on failure of the panel glass under mechanical shock is the main topic of this study. Since the glass for the LCD panel is thin, it needs to be designed to have enough toughness against mechanical shock. In this paper, a process of estimating fracture of the panel glass is proposed to guarantee reliability of the product. The fracture toughness of the panel glass is used as a criterion of the fracture based on an experimental approach. The stress intensity factor was calculated considering a model with the largest initial crack size on a cut surface and with the boundary force obtained from a dynamic finite element analysis. Critical surface roughness on the cut surface of a typical glass panel, to prevent fracture in case of bending mode, is obtained.

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References

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