Abstract: An image display comprises an image display device having an array of pixel elements; and an image guide having an array of light transmission guides (80), input ends of the light transmission guides being arranged to receive light from pixel elements of the image display device, and output (90) ends of the light transmission guides providing an image output surface; in which each light transmission guide comprises a light-guiding region to promote light propagation by total internal reflection and a reflective coating (86) on the light guiding region to promote specular reflection at the region-coating interface.

Abstract: An image display comprises an image display device having an array of electrically driven picture elements (60) viewable at a viewing surface (90); and luminance correction means (110) arranged with respect to the image display device so as to apply a spatial luminance filter (122, 124) to the output of the image display device, the spatial luminance filter attenuating the light output by each picture element of the image display device in substantially inverse relation to the luminance response characteristics of the picture element so that each picture element exhibits substantially the same luminance for a given input electrical driving signal.

Abstract: The array of electrodes of an active silicon backed matrix addressed liquid crystal cell incorporating a black guest dye arranged in groups whose individual members exhibit contrasting colors, typically, red, blue, green and optionally yellow, whereby a polychromatic image can be displayed.

Abstract: A flexible printed circuit is secured with adhesive to a glass or plastics substrate. Electrical connection between the tracks of the printed circuit and co-operating tracks on the substrate is made by way of conductive fibers with which the adhesive is loaded in such a proportion that no bridging electrical contact is established between laterally adjacent tracks.

Abstract: A method for preparing and operating dynamic scattering liquid crystal display cells having internal electrodes and containing a smectic liquid having positive dielectric anisotropy and incorporating a homeotrophic alignment inducing medium for the smectic liquid filling. The cell can be switched off to make the transition from dynamic scattering to static scattering for providing indefinite storage properties.