Ferroelectric Liquid Crystals. Material Properties and Applications

Skarp, Kent; Handschy, Mark A.

doi:10.1080/00268948808082210

Cited by 107 publications

(66 citation statements)

References 84 publications

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“…A leading candidate is ferroelectric liquid crystal (FLC) [1]. Surface-stabilized (SS) FLCs are attractive because of their unique characteristics such as high-speed response, wide viewing angle and bistability [2][3][4]. Although the bistability is suitable for passive matrix-addressed displays, it is disadvantageous for LCDs which possess grayscale or full-color capability [5].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Polymer Stabilization Strength in Polymer-Stabilized Ferroelectric Liquid Crystals

2010

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We have analyzed the effect of polymer stabilization on the helical structure of FLCs, such as polymer stabilization strength and molecular-alignment-structural deformation, by the conoscopic figures of polymer-stabilized ferroelectric liquid crystals (PSFLCs) observed from computer simulation and experiment. In this study, we research the conoscopic figures and the polymer stabilization strength of PSFLCs fabricated using a new FLC material and several types of monomer. In the case using a photocurable monoacrylate LC-1, the elastic constant of PSFLC is as large as that of pure FLC. On the other hand, in the case of diacrylate 2A363, the elastic constant is one hundred times larger. Therefore, the polymer stabilization strength and the characteristics of PSFLC may be widely controlled by mixing several types of monomer.

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Section: Introductionmentioning

confidence: 99%

Measurement of Polymer Stabilization Strength in Polymer-Stabilized Ferroelectric Liquid Crystals

2010

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“…1,2 The present research work has been done with the aim of knowing how the electrical properties of orientation films and of the FLC medium affect the temporal behavior of the switching currents and the EO responses for triangular-voltage waveforms, and of evaluating the magnitude of the depolarization fields that degrade the memory capability in FLC EO devices. We adopted two kinds of orientation layers; one was made of ordinary rubbed polyimide (PI) films and the other was polyimide (PI) Langmuir-Blodgett film.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electrical Properties of Orientation Films on Switching Current and EO Performance of FE-LCD

Kimura

Maeda

Yoshida

et al. 1991

Molecular Crystals and Liquid Crystals

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Simultaneous observation of the temporal behaviors of the switching currents, and the electrooptic (EO) response, in ferroelectric liquid crystal (FLC) cells prepared by using molecular orientation films of rubbed polyimide (PI) and PI Langmuir-Blodgett films has been carried out. The effect on these phenomena of doping of a charge-transfer complex into the FLC medium also has been investigated. The behavior has been interpreted by investigating the effect of the internal depolarization fields originating from accumulated charges on the nonconductive orientation films such as ordinary rubbed PI.In the case where PI-LB films were used, the switching current and the EO response were shown to start exactly at the instant when the applied triangular voltage waveform reversed polarity, whereas in the case of insulating orientation layers there occurred a phase advance both in the switching current and EO response. Through this study, the magnitude of the depolarization field was estimated.

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“…Spontaneous polarization, tilt angle, azimuthal angle, switching time and rotational viscosity, etc. are the important parameters of ferroelectric LCs [64,65]. To improve the various parameters which are crucial for their use in display devices and other useful applications, efforts have been made by different research groups [66,67].…”

Section: Properties Of Doped Ferroelectric Liquid Crystalsmentioning

confidence: 99%

Dielectric and Electro-Optical Properties of Ceramic Nanoparticles Doped Liquid Crystals

Porov¹,

Chandel²,

Manohar³

2016

Transactions on Electrical and Electronic Materials

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Liquid crystals are important materials because of their applications in display technology and many other scientific applications. Different mixtures of liquid crystals and their doped samples have gained interest because a single liquid crystal compound cannot fulfill all the required parameters for the display application. The doping can be accomplished with dyes, polymers, or composite nanoparticles among other substance. The addition of nanoparticles can modify the physical properties of the host liquid crystal and enhances the performance of electro-optical devices. The present study is focused on investigations of possible changes in dielectric and electro optical properties of liquid crystals caused by doping with ceramic nanoparticles. Including smaller nanoparticles were found to be better candidates for use in suppressing the unwanted ion effects in liquid crystal displays.

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Ferroelectric Liquid Crystals. Material Properties and Applications

Cited by 107 publications

References 84 publications

Measurement of Polymer Stabilization Strength in Polymer-Stabilized Ferroelectric Liquid Crystals

Measurement of Polymer Stabilization Strength in Polymer-Stabilized Ferroelectric Liquid Crystals

Effect of Electrical Properties of Orientation Films on Switching Current and EO Performance of FE-LCD

Dielectric and Electro-Optical Properties of Ceramic Nanoparticles Doped Liquid Crystals

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