Optimization of the off-states for single-layer and double-layer general twisted nematic liquid-crystal displays

The Jones matrix representation has been used to obtain an analytic closed-form expression for the optical transmission of a general double-layer twisted nematic (TN) liquid-crystal display with arbitrary twist angles and uniform pretilt angles. Based on this result, the optimum off-state design criteria for both single-layer and double-layer TN displays have been formulated. © 1989 IEEE