Electrically controlled birefringence colours in deformed helix ferroelectric liquid crystals

Gurumurthy Hegde; Peizhi Xu; Eugene Pozhidaev; Vladimir Chigrinov; Hoi Sing Kwok

doi:10.1080/02678290802398226

Electrically controlled birefringence colours in deformed helix ferroelectric liquid crystals

Gurumurthy Hegde, Peizhi Xu, Eugene Pozhidaev, Vladimir Chigrinov^*, Hoi Sing Kwok

^*Corresponding author for this work

Department of Electronic and Computer Engineering

Research output: Contribution to journal › Journal Article › peer-review

34 Citations (Scopus)

Abstract

A short helix pitch (p 0=0.45μm) ferroelectric liquid crystal (FLC) mixture was found to provide four electrically switched birefringence colours: blue, green, yellow and red. The contrast ratios of the birefringence colours were measured as functions of both driving voltage amplitude and frequency. The FLC mixture, which had a relatively high birefringence, Δn≥0.2, was controlled by a voltage less than 5V. A simple model is proposed, which was confirmed by experiments. A possible application is discussed in field-sequential colour displays, where fast switching times are required.

Original language	English
Pages (from-to)	1137-1144
Number of pages	8
Journal	Liquid Crystals
Volume	35
Issue number	9
DOIs	https://doi.org/10.1080/02678290802398226
Publication status	Published - Sept 2008

Keywords

Electro-optics
Grey scale
Memory
Multistability
Passively addressed FLC display

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10.1080/02678290802398226

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title = "Electrically controlled birefringence colours in deformed helix ferroelectric liquid crystals",

abstract = "A short helix pitch (p 0=0.45μm) ferroelectric liquid crystal (FLC) mixture was found to provide four electrically switched birefringence colours: blue, green, yellow and red. The contrast ratios of the birefringence colours were measured as functions of both driving voltage amplitude and frequency. The FLC mixture, which had a relatively high birefringence, Δn≥0.2, was controlled by a voltage less than 5V. A simple model is proposed, which was confirmed by experiments. A possible application is discussed in field-sequential colour displays, where fast switching times are required.",

keywords = "Electro-optics, Grey scale, Memory, Multistability, Passively addressed FLC display",

author = "Gurumurthy Hegde and Peizhi Xu and Eugene Pozhidaev and Vladimir Chigrinov and Kwok, \{Hoi Sing\}",

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T1 - Electrically controlled birefringence colours in deformed helix ferroelectric liquid crystals

AU - Hegde, Gurumurthy

AU - Xu, Peizhi

AU - Pozhidaev, Eugene

AU - Chigrinov, Vladimir

AU - Kwok, Hoi Sing

PY - 2008/9

Y1 - 2008/9

N2 - A short helix pitch (p 0=0.45μm) ferroelectric liquid crystal (FLC) mixture was found to provide four electrically switched birefringence colours: blue, green, yellow and red. The contrast ratios of the birefringence colours were measured as functions of both driving voltage amplitude and frequency. The FLC mixture, which had a relatively high birefringence, Δn≥0.2, was controlled by a voltage less than 5V. A simple model is proposed, which was confirmed by experiments. A possible application is discussed in field-sequential colour displays, where fast switching times are required.

AB - A short helix pitch (p 0=0.45μm) ferroelectric liquid crystal (FLC) mixture was found to provide four electrically switched birefringence colours: blue, green, yellow and red. The contrast ratios of the birefringence colours were measured as functions of both driving voltage amplitude and frequency. The FLC mixture, which had a relatively high birefringence, Δn≥0.2, was controlled by a voltage less than 5V. A simple model is proposed, which was confirmed by experiments. A possible application is discussed in field-sequential colour displays, where fast switching times are required.

KW - Electro-optics

KW - Grey scale

KW - Memory

KW - Multistability

KW - Passively addressed FLC display

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DO - 10.1080/02678290802398226

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SN - 0267-8292

VL - 35

SP - 1137

EP - 1144

JO - Liquid Crystals

JF - Liquid Crystals

IS - 9

ER -

Electrically controlled birefringence colours in deformed helix ferroelectric liquid crystals

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Keywords

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