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Alignment layerless flexible liquid crystal display fabricated by an imprinting technique at ambient temperature

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4 Author(s)
Kim, Yeun-Tae ; School of Electrical Engineering No. 32, Seoul National University, Kwanak P.O. Box 34, Seoul 151-600, Korea ; Seongmo-Hwang ; Hong, Jong-Ho ; Lee, Sin-Doo

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The authors report on an alignment layerless (AL) flexible liquid crystal (LC) display fabricated at ambient temperature through an imprinting process. One-dimensional microgrooves and two-dimensional arrays of microstructures embossed on plastic substrates provide the spontaneous alignment of the LC molecules and spacers for the uniform cell gap in a flexible LC display, respectively. It is found that the azimuthal anchoring energy, generated from the microgrooves, is on the order of 10-5 J/m2 which is strong enough to uniformly align the LC over large area. Our AL flexible LC display shows symmetric viewing characteristics and stable electro-optic properties under a bent environment.

Published in:

Applied Physics Letters  (Volume:89 ,  Issue: 17 )