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Electrode Dimension Effects on Blue-Phase Liquid Crystal Displays

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6 Author(s)
Kuan-Ming Chen ; Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA ; Jin Yan ; Wu, Shin-Tson ; Yu-Pei Chang
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Electrode dimension effects on the electro-optic properties of a polymer-stabilized blue-phase liquid crystal (PS-BPLC) are investigated experimentally. By reducing the width and gap of the in-plane-switching (IPS) electrodes, the operating voltage of the PS-BPLC is decreased significantly while keeping over 80% transmittance. This unexpected high transmittance results from fringing field migration into the electrode region, which in turn activates more BPLC material and enlarges the aperture ratio. Further reducing electrode dimension to 2 m would cause some undesirable effects, such as increased response time and hysteresis due to electrostriction effect and phase transition, and ultimately damage the polymer networks.

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Display Technology, Journal of  (Volume:7 ,  Issue: 7 )