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Investigation of Liquid Crystal Ripple Using Ericksen-Leslie Theory for Displays Subject to Tactile Force

Author

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  • Y. J. Lee
  • T. S. Liu
  • Mao-Hsing Lin
  • Kun-Feng Huang

Abstract

Liquid crystal display panels subjected to tactile force will show ripple propagation on screens. Tactile forces change tilt angles of liquid crystal molecules and alter optical transmission so as to generate ripple on screens. Based on the Ericksen-Leslie theory, this study investigates ripple propagation by dealing with tilt angles of liquid crystal molecules. Tactile force effects are taken into account to derive the molecule equation of motion for liquid crystals. Analytical results show that viscosity, tactile force, the thickness of cell gap, and Leslie viscosity coefficient lead to tilt angle variation. Tilt angle variations of PAA liquid crystal molecules are sensitive to tactile force magnitudes, while those of 5CB and MBBA with larger viscosity are not. Analytical derivation is validated by numerical results.

Suggested Citation

  • Y. J. Lee & T. S. Liu & Mao-Hsing Lin & Kun-Feng Huang, 2013. "Investigation of Liquid Crystal Ripple Using Ericksen-Leslie Theory for Displays Subject to Tactile Force," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-11, December.
    • Handle: RePEc:hin:jnlmpe:932492
    DOI: 10.1155/2013/932492
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