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Bisector Effect on the Twisted-Nematic Cells

Bisector effects of the twisted-nematic cells are analyzed using Jones matrix method. When the incident polarization angle is at the bisector of the twist angle, the dark state voltage in the crossed-polarizer configuration is greatly reduced. The 90° and 60° twisted cells are used as examples for demonstrating the bisector effect of the transmissive and reflective displays, respectively. Owing to the increased color dispersion, this bisector effect is more suitable for projection systems than for direct-view displays.