Influence of Impurity Ions for Measurement of Flexoelectric Coefficients　Using C-V Characteristics

Abstract

A light leakage from pixel edges with the high resolution LC panel has been noticed. It is considered that a flexoelectric effect is one of causes. Evaluations of the flexo-coefficient of LC materials is required. However, the separation of impurity ions which is contained LC materials is the most difficult problem. Our group have attempted to evaluate the flexo-coefficients (e11+e33) for the pure LC materials by extrapolating the graph of the flexo-coefficients vs VHR curve. Then, 12.34 pC/m of the coefficient (e11 + e33) was estimated with no impurity ions for the nematic mixture ZLI-4792.