Off-axis color shift in the dark state and gray scale inversion in an in-plane switching
(IPS) liquid crystal display (LCD) device were investigated. Analyses were performed using the
Poincaré sphere representation. The results show that color shift
in the dark state and gray scale inversion in an IPS LCD can be reduced by using a biaxial film. We
confirmed the extent of these improvements by measuring the optical performance of a fabricated IPS
© 2012 Optical Society of Korea
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