Display devices and display elements thereof

Details Display devices and display elements thereof Display devices and display elements thereof

G - Physics

09

G

375/13, 40/43

G09G 3/34 (2006.01)

Patent

CA 1302083

ABSTRACT Display devices and Display Elements thereof A light reflective display element comprises sets (10,20,30,40) of vanes of which corresponding vanes, e.g. the group (12,22,32,42), have the same colour, at least one of the groups being slidable by a rod (110) between positions in which the group is visible and in which the group is hidden behind another group. To provide shading the movable group can also occupy intermediate positions; in addition or alternatively the group may be oscillated at a frequency too high to be observed by the human eye. When four groups of vanes are provided corresponding to black and three primary colours, secondary colours of varying degrees of brightness may be simulated, to reproduce the effects of a colour television set. The elements may be combined to form alpha-numeric displays or large picture arrays.

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