Generation of Subjective Colors in an Electroluminescent Display

Subjective color techniques have been adapted to the field of electroluminescent display to produce six distinct colors from an essentially monochromatic source. The system required to achieve this effect includes a frame sequential presentation of scheduled intensity patterns of diverse spectral content. The patterns are generated by varying the voltage applied to the appropriate display areas, while the shifting of impressed frequency controls the primary output color. Subjective complements are generated in the darker areas and mixed with the primaries to form a variety of hues, depending on the relative intensity of the components.