Journal of Photopolymer Science and Technology
Online ISSN : 1349-6336
Print ISSN : 0914-9244
ISSN-L : 0914-9244
Electro-Optical Property in Hybrid Aligned Reverse mode Cell Using Liquid Crystals with Positive and Negative Dielectric Constant Anisotropies
Rumiko YamaguchiKota InoueYuki OikawaTomoya Takasu
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2017 Volume 30 Issue 4 Pages 463-466

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Abstract

We have proposed polymer stabilized liquid crystal (LC) cells with a hybrid alignment nematic (HAN) LC. LCs with positive and negative dielectric constant anisotropies are used. The cell has a reverse mode electro-optical property which shows a transparent state in a voltage off-state and a light scattering state in the on-state. We fabricate cells by irradiating the cell with a UV light from a planar alignment side or vertical alignment side in a polymerization process. The photopolymerization-induced segregation of the polymer from the LC and the influence of UV absorption by the LC bulk are investigated. A relationship between UV irradiation conditions and electro-optical characteristics in the cell is clarified. The light scattering intensity depends on an incident angle of light in the on-state, which is promising for application to smart windows. The feasibility of this concept is demonstrated with consideration of LC materials.

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© 2017 The Society of Photopolymer Science and Technology (SPST)
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