Color characteristics of the fringe-field switching liquid crystal mode depending on E- and O-modes

Color characteristics of the E- and O-modes in the fringe-field switching mode using the liquid crystal with negative dielectric anisotropy have been investigated. According to calculated and measured results for color shift up to 70° of polar angle in all directions, a cell with E-mode shows smaller color shift with varying viewing direction than a cell with O-mode in all grey levels, for instance, the color shift in a white state is much smaller in the E-mode (Δxy = 0.1819) than in the O-mode (Δxy = 0.0798). However, the color shift of the white state is strongly suppressed for both E-mode (Δxy = 0.0199) and O-mode (Δxy = 0.0093) with a dual domain structure.