In this work, an LCD mode with vertical alignment and in‐plane switching electrodes (VA‐IPS) is proposed to improve optical performance. This mode can control tilt angles of LC molecules via combinations of various distances of the in‐plane‐switching electrodes, and thus improve color washout. Also, a new driving scheme combining T‐T type driving method with charge‐shared (CS) structure is presented to further improve the picture quality at oblique viewing angle by not only adjusting spacing of in‐plane‐switching electrode pairs but also creating an extra voltage difference by CS structure in one pixel. After simulation and optimization, this mode possesses very small oblique gamma distortion and TRDI as low as 0.13.

The process of liquid crystal alignment in Polymer Stabilized Alignment Mode (PSA) is demonstrated in this work. The splay and bend deformation of liquid crystal in PSA was analyzed, and the principle to control the sequence of splay and bend deformation was discovered.

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The response time of the vertically aligned in-plane-switching (VA-IPS) mode with respect to different driving voltages is studied. It is found that the rising time, Ton, is highly related to the square of the electric field between the inter-digit electrodes. Since the dielectric torque exerted on the liquid crystal molecules is proportional to the square of the electric field, one can say that it basically dominates the Ton of the VA-IPS mode. However, there's evidence showing that the total torque perceived by the LC molecules is not simply caused by the voltage applied to the inter-digit electrodes, but also by the flexoelectricity originating from the splay deformation between the electrodes. This leads to the phenomenon that Ton doesn't monotonically decrease with the increasing dielectric torque.