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Liquid Crystals Volume 41, 2014 - Issue 9
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Original Articles

A hysteresis-free polymer-stabilised blue-phase liquid crystal

Yifan LiuCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA
,
Su XuCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA
,
Daming XuCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA
,
Jing YanCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA;Display Center, School of Electronic Science and Engineering, Southeast University, Nanjing, P. R. China
,
Yating GaoCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USA
&
Shin-Tson WuCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL, USACorrespondence[email protected]
Pages 1339-1344 | Received 18 Mar 2014, Accepted 28 Apr 2014, Published online: 16 May 2014
 
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Abstract

We report a polymer-stabilised blue-phase liquid crystal (BPLC) in an in-plane-switching (IPS) cell with negligible hysteresis and good stability. Long ultraviolet (UV) wavelength and top-side (no IPS electrode) exposure create uniform polymer network, which in turn helps to suppress hysteresis. The effect of photoinitiator is also investigated. Although a BPLC precursor without photoinitiator requires a higher UV dosage to stabilise the polymer network, it is favourable for keeping high resistivity and reducing image sticking.

Acknowledegments

The authors are indebted to Jie Sun and Fenglin Peng for useful discussion.

Funding

The authors are grateful to AU Optronics (Taiwan) for financial support.

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