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.

Due to the inhomogeneous electric field, liquid crystal molecules reveal splay deformation in vertically-aligned in-plane-switching mode. The flexoelectric effect from the splay is confirmed by fast CCD images. We introduce a model to explain the mechanism of such phenomenon and to determine the sign of flexoelectric coefficient. Author Keywords VA-IPS; Flexoelectric effect 24.2 / C.-W. Lai SID 2014 DIGEST • 313

No abstract