Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
Volume 39, Issue 6A, Pages 3496-3501Publisher
JAPAN J APPLIED PHYSICS
DOI: 10.1143/JJAP.39.3496
Keywords
liquid-crystal cell; space-charge polarization; complex dielectric constant; local electric field; ions
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The distribution of the local electric field in a liquid-crystal cell containing mobile ions was simulated in accordance with the Poisson equation in the steady state under a DC voltage application. The distribution of the local field was determined to be markedly unbiased due to the contribution of the bound charges on the electrodes induced by ions. This result suggests that the intensity of the local field acting on ions can be approximated by that of the external field, for analyzing the space-charge polarization under a small AC voltage application even in a very low frequency region, where the diffusion distance of ions during the period of the external AC field becomes greater than the thickness of the cell.
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