Fabrication of Defect-Free Ferroelectric Liquid Crystal Cells Using Combination of Different Pretilt Alignment Films Rubbed in Anti-Parallel

Ito, Noriaki; Yabuki, Kotaro; Furue, Hirokazu

doi:10.1080/15421400903048586

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…6,7) The zigzag defect is a boundary defect between two types of chevron domains. 8,9) This defect formation can be controlled or eliminated in surface-stabilized FLCs [2][3][4][5] with cells fabricated in a narrow gap, e.g., 2 m, by using several techniques. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] On the other hand, it is not well known in a wide gap cell how the molecular alignment structure of FLCs is and the technique a defect-free FLC medium can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Effect of Polymer Stabilization on Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell

Furue¹,

Tanaka²,

Akaogi³

2012

Jpn. J. Appl. Phys.

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We have investigated the molecular alignment structure of ferroelectric liquid crystals (FLCs) in a wide-gap cell for application to optical devices, such as an electrically controlled lens. The transformation of the smectic layer structure has been observed under an electric field, particularly under a low electric field in the wide-gap cell. We have attempted to suppress this transformation, which considerably degrades the optical performance of FLCs, by the polymer stabilization technique. As a result, we have found that the layer transformation can be suppressed successfully. However, the disarray of the FLC molecular alignment may occur owing to the deformation of polymer networks accompanied by FLC molecular reorientation caused by the application of an electric field.

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Section: Introductionmentioning

confidence: 99%

Effect of Polymer Stabilization on Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell

Furue¹,

Tanaka²,

Akaogi³

2012

Jpn. J. Appl. Phys.

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“…6,7) The zigzag defect is a boundary defect between two types of chevron domains. 8,9) This defect formation can be controlled or eliminated in surface-stabilized (SS) FLCs [2][3][4][5] with cells fabricated in a narrow gap, e.g., 2 mm, by utilizing developed low-pretilt alignment films with very smooth surfaces. 10,11) An LC lens has major advantages such as high-speed response, compactness, light weight, and low electrical consumption in comparison with a mechanical lens.…”

Section: Introductionmentioning

confidence: 99%

Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell for Liquid Crystal Lens

Furue¹,

Sakai²,

Tanaka³

2010

Jpn. J. Appl. Phys.

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The high-speed response of ferroelectric liquid crystals (FLCs) is advantageous for optical devices such as an electrically controlled lens. We have investigated the molecular alignment structure of FLC in a wide-gap cell for application to the lens. As a result, it has been found that a zigzag defect-free FLC medium can be obtained by utilizing alignment films, which possess a smooth surface and give rise to the defect-free situation in a narrow-gap cell, and by cooling from the nematic to the smectic phase at a low rate of <1 C/min. However, the transformation of the smectic layer structure has been observed under an electric field, particularly under a very low electric field in the wide-gap cell. We have attempted to suppress this transformation, which considerably degrades the optical performance of FLC, by the polymer stabilization technique. #

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Study on alignment technique of ferroelectric liquid crystals for display application

Furue

Ebato

Ninomiya

et al. 2017

Molecular Crystals and Liquid Crystals

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Fabrication of Defect-Free Ferroelectric Liquid Crystal Cells Using Combination of Different Pretilt Alignment Films Rubbed in Anti-Parallel

Cited by 3 publications

References 11 publications

Effect of Polymer Stabilization on Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell

Effect of Polymer Stabilization on Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell

Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell for Liquid Crystal Lens

Study on alignment technique of ferroelectric liquid crystals for display application

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