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Abstract— Ferroelectric LCDs have shown promise for use in high‐speed or highly multiplexed flat‐panel displays. Before ferroelectric liquid‐crystal technology could be implemented in practical devices, a number of significant problems had to be overcome. It is believed that all the remaining problems have now been removed, leaving the way open for large‐scale production of computer displays and the potential for larger devices to rival competing active‐matrix and supertwist display technologies. This paper will review the significant developments of FLCDs, illustrated by examples from both CRL and other laboratories.

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The operation of a Surface Stabilised Ferroelectric Liquid Crystal Device (SSFLCD), suitable for full colour multiplexed displays, depends critically on the configuration of the directors within the device. We present experimental and theoretical results, using optical transmission symmetry, made on devices with various surface treatments, showing evidence of both 'tilt' and 'twist' deformations. 'Bend' deformations and the effect of an ac bias are also discussed.