한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Accurate Measurement of Twist Angle for Analysis of Azimuthal Anchoring Energy and Rubbing Direction of LC Panels of IPS Mode

  • Baek, S.H. (Sesim Photonics Technology Co.) ;
  • Rho, B.G. (Sesim Photonics Technology Co.) ;
  • Oh, J.M. (Jeil Textile Co.) ;
  • Dong, W.S. (Jeil Textile Co.) ;
  • Yang, B.K. (Chonbuk National University) ;
  • Kim, J.S. (Chonbuk National University)
  • Published : 2007.08.27
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Abstract

A new method is developed for the measurement of twist angles of LC molecules in an LC panel with angular resolution of 0.01degree, which allows measurement of LC panels with small twist angles. The method is based on the analysis of the change in polarization state of a light beam as it passes through the LC panel in test is rotated in-plane. Compared to other traditional method, including the analysis of transmittance change, our method is more sensitive and more precise. This method allows accurate determination of anchoring energy and close analysis of the rubbing process in the fabrication of IPS mode LC panels.

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