Generalized Mixed Mode Reflective LCDs for Three Panel Color Projection Applications

The general parameter space was introduced for generalized mixed mode reflective liquid crystal displays (RLCDs). A contrast ratio parameter space was also derived to provide a better picture of both the voltage-off and voltage-on states. A guideline for the optimization of RLCD modes in terms of high light efficiency and high contrast at low operating voltage is given. Such features are important for reflective displays, particularly for crystalline silicon based RLCDs. As a result, we find a number of new RLCD modes with high contrast and high brightness, which are quite suitable for the three-panel color projection system.