An object of the present invention is to reduce a guasi-color pixel effect occurring when a dynamic image is displayed according to an intraframe time-division multiplexing type gray-scale display method. In an intraframe time-division multiplexing type gray-scale display method in which one frame is divided into a plurality of sub-frames and sub-frames during which light is irradiated are combined with sub-frames during which no light is irradiated in order to render a gray-scale level, and assuming that luminance levels associated with the plurality of sub-frames are set in descending order from the highest luminance level as Nn, Nn-1, Nn-2, ..., N1, there is a sub-frame relative to which the relationship of Nn=Nn-1+Nn-2.
Intraframe time-division multiplexing type gray-scale display method and device