Viewing angle control mode using nematic bistability
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Updated: Jul 4, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
Jin Seog Gwag1, You-Jin Lee, Myung-Eun Kim
1Research Institute of Information Display, Hanyang University, Seoul 133-791, Korea.
Abstract:
As an approach using bistable nematic liquid crystals, we present a liquid crystal display with viewing angle control using two stable states, splay and 180 degrees-twist at pi cell, with three terminal electrode structures. The splay state is controlled by in-plane switching for a wide viewing angle (WVA), while the 180 degrees-twist state is operated by vertical switching for a narrow viewing angle (NVA). With this bistable mode, we fabricated viewing angle-controlled LCDs without additional optical components.
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