Evaluation of azimuthal anchoring energy for liquid crystal device equipped with color filter by means of renormalized transmission ellipsometry

Abstract

In this study, we theoretically investigated the influence of a color filter on the determination of the azimuthal anchoring energy by means of ellipsometric analysis, and the azimuthal anchoring energy of the twisted nematic (TN) liquid crystal devices (LCDs) equipped with/without a color filter was evaluated by means of renormalized transmission ellipsometry. The results indicated no influence in the obtained ellipsometric parameters, such as the phase difference and the angle of amplitude ratio, when a color filter was an isotropic medium. It was experimentally confirmed that the evaluated azimuthal anchoring energy of LCD with a color filter was almost the same as that without a color filter. From the numerical and experimental study, the possibility for the determination of the azimuthal anchoring energy for the commercial TN LCD products was demonstrated.