We investigated a viewing angle control of a liquid crystal display (LCD) under optical compensation for the enhancement of viewing angle characteristics in a wide viewing angle mode. The viewing angle controllable (VAC) LCD was operated in the configuration of three terminal electrodes consisting of a fringe-field-switching electrode at a bottom substrate and a common electrode at a top substrate. Using Poincaré sphere analysis, the optical compensation for the VAC LCD was designed so that the viewing angle characteristics were much improved in the wide viewing mode while they were degraded in the narrow viewing mode. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

We fabricated an inverse four domain twisted nematic (IFDTN) mode using a stacked photo-alignment layer enhancing the azimuthal anchoring energy. The strong anchoring energy generates the stable 4D twist structures under an applying voltage. High transmittance and contrast device is achieved without complex rubbing processes.

In this paper, we fabricated the inverse four domain twisted nematic liquid crystal cell using stacked vertical alignment layer on planar alignment layer for strong azimuthal anchoring energy. That makes possible twist structures under applied voltage without chiral-dopant, as a result, high transmittance and wide viewing angle could be revealed.