Abstract
The electrical and optical characteristics of nematic liquid crystal (NLC) cells and their dependence on the thickness of an amorphous hydrogenated carbon (a-C:H) alignment layer have been studied. An increase in the a-C:H layer thickness favors enhancement of the screening of a bias voltage applied to this layer, which is manifested by an increase in the threshold voltage of the electrooptical splay effect. This is accompanied by a decrease in the initial (pretilt) director angle, which is evidence for an increase in the anchoring energy due to the field of space charge localized at the interface.
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Original Russian Text © E.A. Konshina, E.O. Gavrish, 2011, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2011, Vol. 37, No. 10, pp. 21–26.
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Konshina, E.A., Gavrish, E.O. Screening effect of a-C:H alignment layer in nematic liquid crystal cell. Tech. Phys. Lett. 37, 455–457 (2011). https://doi.org/10.1134/S1063785011050245
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DOI: https://doi.org/10.1134/S1063785011050245