| http://www.w3.org/ns/prov#value | - The drive voltages are obtained by means of, for example, a drive circuit 8 which converts the incoming information 9 (TV-signals, information about datagraphic symbols etc.) into drive voltages which are applied to the electrodes 6 and 7 through conductors 6A and 7A. Layers 10 and 11 of electrically insulating material, for example polyimide, are present on the electrodes 6 and 7, said layers als
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