Changes of twisted nematic liquid-crystal layers by frequency switching of applied electric fields |
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| Authors: | CJ Gerritsma JJMJ de Klerk P van Zanten |
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| Institution: | 1. Philips Research Laboratories, Eindhoven, The Netherlands |
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| Abstract: | Electric fields of low and high frequency were applied successively to a twisted nematic layer consisting of a material with a dielectric anisotropy whose sign depends on the frequency. Six different areas have been observed which are found to have twist angles of ±π/2, ±3π/2 and ±5π/2. The formation process of these regions is described in some detail. |
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