Double parallel-aligned cells for high speed liquid crystal displays

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Abstract
Double parallel-aligned nematic liquid crystal cells with crossed directors: one serves as a tunable phase compensator and another as a master cell, exhibits a fast response time, improved viewing angle, reasonably high white-to-black contrast ratio, and low operation voltage. The flexibility in choosing an appropriate operation voltage enables the device to be operated at its optimal condition. This operational mode can be used for both color-sequential projection and direct view displays.