P‐196: Vertically Aligned Nematic Liquid‐Crystal Display with Double‐Sided In‐Plane Switching Using Positive Liquid‐Crystal Materials

Abstract We propose a vertical alignment liquid crystal cell controlled by double‐Side in‐plane switching with a positive dielectric anisotropy liquid crystal material. In this structure, the pixel electrodes are interdigital electrodes which are deposited on the bottom and top substrates parallel to each other. In the voltage‐off state, the liquid crystal molecules are vertically aligned under the crossed polarizers, hence the cell appears to be dark. When the in‐plane field is applied, the liquid crystal molecules tilt down to the left and right along the field direction which is at 45° with respect to the input polarizer, giving rise to transmission of the incident light. Proposed structure shows higher transmittance and lower on‐voltage compared to the conventional vertical alignment configuration with a positive dielectric anisotropy liquid crystal. The improved electro‐optical properties are due to the stronger in‐plane field compared with the configuration having one‐Side electrode. In this device, the response time and viewing angle characteristics almost the same as the conventional structure.