Advanced wide viewing angle technology in liquid crystal display modes

Abstract

This paper reviews the advanced optical configurations for in-plane switching (IPS) and vertical alignment (VA) liquid crystal (LC) cells with wide viewing angle in a visible wavelength range. Optical compensation and optimisation to eliminate off-axis light leakage in the dark state is performed on a Poincaré sphere using the trigonometric and the Muller matrix method. By optimising the wavelength dispersion of used optical retardation films, we could achieve wide-view characteristics for both the IPS and VA LC cells. In addition, we show the advanced wide-view technology for a reflective LC mode.

Keywords:

• liquid crystal
• optical configuration
• wide viewing angle
• Poincaré sphere

Acknowledgements

This paper was supported by Dong-A University Research Fund in 2009.