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 μm 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.
© 2011 IEEE
Kuan-Ming Chen, Jin Yan, Shin-Tson Wu, Yu-Pei Chang, Chen-Chu Tsai, and Jyh-Wen Shiu, "Electrode Dimension Effects on Blue-Phase Liquid Crystal Displays," J. Display Technol. 7, 362-364 (2011)