Abstract

The problem with the stability of a smectic A liquid crystal (LC) mixture in a display based on the electrically reversible memory effect is discussed. The degradation of the LC mixture is initiated by the electric field and consists of electrochemical decomposition of one of the mixture components accompanied by gas bubbles arising on the electrodes of the display. The electrochemical degradation was successfully prevented by the introduction of different passivation layers and by the modification of problematic LC mixture component. The obtained results are used for improving the lifetime of a display based on the electrically reversible memory effect.

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