光配向法によるネマティック液晶に対する双安定アンカンリング表面の形成

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A1: Imixed solution of RMI-15 (JSR) and PI-A (Nissan Chemical Industry) was used as an alignment material. It is known that RMI-15 and PI-A make liquid crystal molecules align parallel and perpendicular to the polarization direction of UV light, respectively. During polarized UV light irradiation, the temperature of those substrates was kept at 180 deg., higher than the grass transition point, to assist photo-dimerization in RMI-15. As a LC material, a nematic single compound 5CB was used in a sample cell. When the irradiation energy of UV light was in the range 500 to 2000 mj/cm^2 and the range 3500〜6000mJ/cm^2, LC molecules aligned perpendicular and parallel, respectively, to the polarized direction of UV light. On the other hand, we confirmed that bistable anchoring properties are caused when the irradiation energy of UV light is in a range 2000 to 3500 mJ/cm^2. We successfully transformed the alignment direction between bistable directions by applying a pulsed voltage.
工学院大学の論文