Development on novel liquid crystal displays without using any alignment layers by surface structural arrangement of dendrimers

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Liquid crystalline displays (LCDs) generally use polyimide alignment layers to determine the director orientation of liquid crystal molecules on voltage-off state. The preparation of the alignment layer usually requires large quantities of solvent, high temperature operation, and rubbing process, which has harmful influence on integrated circuits of LCDs and cleanliness of clean rooms. We have developed LCDs without any polyimide layers simply by dissolving liquid crystalline dendrimers into nematic liquid crystal. The liquid crystalline dendrimers induced vertical alignment of liquid crystal molecules on the bare glass and ITO glass. And we have successfully developed LCDs with plastic substrates instead of glasses, because the novel preparation process of LCDs needs no high-temperature process.