PD09 液晶/ポリマー溶液の配向誘起相分離に基づくポリマー壁の形成(2004年日本液晶学会討論会)

概要

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We propose a novel formation method of polymer walls in liquid crystal (LC) layer using wetting and molecular alignment. The polymer walls are obtained by thermal phase separation of an LC/polymer solution between substrates with polyimide films patterned by short-wavelength ultraviolet irradiation using a photomask. The difference of the wetting characteristics between the polyimide films and the substrate surface causes the coalescence of the LC droplets on the patterned polyimide films when the phase separation is induced. Consequently the polymer walls are formed on the substrates without the polyimide films. In addition, the po]ymer walls become sharp by using rubbed polyimide films because the nucleation of the growing LC droplets concentrates on the polyimide films. It is thought that the increase of the alignment order of the LC molecules in the solution near the rubbed polyimide films promotes the LC molecular aggregation which becomes the growth nuclei of the LC droplets.
2004-09-26