Optimal operation temperature of liquid crystal modulators

Wu, Shin‐Tson; Lackner, A. M.; Efron, Uzi

doi:10.1364/ao.26.003441

Cited by 109 publications

(52 citation statements)

References 18 publications

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“…To compare the performance of LC mixtures, a Figureof-Merit (FoM) which takes phase retardation and visco-elastic coefficient into account is defined as [10]:…”

Section: Methodsmentioning

confidence: 99%

Isothiocyanato-Tolanes Based High Birefringence and Fast Response Time Mixtures for Photonic Applications

Gauza

Wen

Zhao

et al. 2006

Molecular Crystals and Liquid Crystals

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We have developed some high birefringence (Dn $ 0.3 at k ¼ 633 nm) and relatively low viscosity nematic mixtures using isothiocyanato tolanes. These mixtures exhibit a high figure-of-merit (FoM) which is desirable for reducing the device response time. Using such a high FoM liquid crystal mixture in a 2-lm homogeneous cell, we demonstrate a 1p phase modulator at k ¼ 633 nm with submillisecond response time.

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“…To compare the performance of LC mixtures, a Figureof-Merit (FoM) which takes phase retardation and visco-elastic coefficient into account is defined as [10]:…”

Section: Methodsmentioning

confidence: 99%

Isothiocyanato-Tolanes Based High Birefringence and Fast Response Time Mixtures for Photonic Applications

Gauza

Wen

Zhao

et al. 2006

Molecular Crystals and Liquid Crystals

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“…To estimate which liquid crystal mixtures or compounds are better for preparations, instead of making a comparison of their individual parameters: Δn, k 11 , γ, V th , the more effective way is to compare their combined features defined by a more complex parameter called Figure of Merits (FoMs) [49,50,64].…”

Section: Requirement For Liquid Crystal Moleculesmentioning

confidence: 99%

High Birefringence Liquid Crystals

2013

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Liquid crystals, compounds and mixtures with positive dielectric anisotropies are reviewed. The mesogenic properties and physical chemical properties (viscosity, birefringence, refractive indices, dielectric anisotropy and elastic constants) of compounds being cyano, fluoro, isothiocyanato derivatives of biphenyl, terphenyl, quaterphenyl, tolane, phenyl tolane, phenyl ethynyl tolane, and biphenyl tolane are compared. The question of how to obtain liquid crystal with a broad range of nematic phases is discussed in detail. Influence of lateral substituent of different kinds of mesogenic and physicochemical properties is presented (demonstrated). Examples of mixtures with birefringence ∆n in the range of 0.2-0.5 are given.

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“…To compare the overall performance of these LCs we define a figure of merit as FoM = (∆n) 2 /(γ 1 /K 33 ). Since K 33 and γ 1 are temperature dependent, we can rewrite FoM as follows [42]: (7) where b is a proportionality constant. Figure 4b depicts the measured data and fitting curve based on Equation (7).…”

Section: Low Viscosity Negative δε Lcsmentioning

confidence: 99%

High Performance Negative Dielectric Anisotropy Liquid Crystals for Display Applications

Chen

Peng

Yamaguchi³

et al. 2013

Crystals

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Abstract:We review recent progress in the development of high birefringence (Δn ≥ 0.12) negative dielectric anisotropy (Δε < 0) liquid crystals (LCs) for direct-view and projection displays. For mobile displays, our UCF-N2 (low viscosity, negative Δε, high Δn) based homogeneous alignment fringe-field switching (called n-FFS) mode exhibits superior performance to p-FFS in transmittance, single gamma curve, cell gap insensitivity, and negligible flexoelectric effect. For projection displays using a vertical alignment liquid-crystal-on-silicon (VA LCOS), our high birefringence UCF-N3 mixture enables a submillisecond gray-to-gray response time, which is essential for color sequential displays without noticeable color breakup. Our low viscosity UCF-N2 also enables multi-domain VA displays to use a thinner cell gap for achieving faster response time.

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Optimal operation temperature of liquid crystal modulators

Cited by 109 publications

References 18 publications

Isothiocyanato-Tolanes Based High Birefringence and Fast Response Time Mixtures for Photonic Applications

Isothiocyanato-Tolanes Based High Birefringence and Fast Response Time Mixtures for Photonic Applications

High Birefringence Liquid Crystals

High Performance Negative Dielectric Anisotropy Liquid Crystals for Display Applications

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