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Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals Volume 331, 1999 - Issue 1
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SECTION VIII: MACROSCOPIC PROPERTIES

Electrical and Optical Measurements of the Image Sticking Effect in Nematic LCD'S

Herbert De Vleeschouwer University of Gent, Department of Electronics and Information Systems (ELIS), B-9000, Gent, Belgium
,
Bart Verweire University of Gent, Department of Electronics and Information Systems (ELIS), B-9000, Gent, Belgium
,
Koen D'have University of Gent, Department of Electronics and Information Systems (ELIS), B-9000, Gent, Belgium
&
Hua Zhang University of Gent, Department of Electronics and Information Systems (ELIS), B-9000, Gent, Belgium
Pages 567-574 | Published online: 04 Oct 2006
 
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Abstract

In this paper we present the results of measurements of the image sticking phenomenon. Simultaneous electric and optical measurements show that the regime leakage current and the optical transmission become asymmetric when a DC voltage is applied. In this way we can measure the change of the effective voltage over the liquid crystal. We believe this change of effective voltage is due to a DC electric field of ions which are separated by the applied DC voltage and trapped at the alignment layers.

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