Patent ID: 8248438

Claim:
An organic EL display for displaying a frame having reduced pseudo contour, comprising: (a) a plurality of pixels, each including a driving transistor, an organic EL element driven by the driving transistor, and a storage capacitance connected to the driving transistor; (b) a plurality of gate lines, each connected to one or more corresponding pixel(s), a plurality of data lines, each connected to one or more corresponding pixel(s), a gate driver for selectively driving the plurality of gate lines, and a data driver for selectively driving the plurality of data lines, wherein each pixel is connected to a single data line and to a single gate line, the gate driver selects one gate line at a time, and pixel data from the data driver on a single data line is written to the storage capacitance in the pixel connected to the single data line and to the selected gate line; wherein pixel data includes an off-potential or an on-potential, so that on-potential pixel data written to a pixel causes the corresponding organic EL element to emit light, and off-potential pixel data written to a pixel causes the light emission from the corresponding organic EL element to be extinguished; and wherein the storage capacitance causes the one or more organic EL element(s) in pixels attached to non-selected gate lines to maintain their respective light emission state(s); (c) a frame memory for storing pixel data corresponding to one frame and providing the stored pixel data to the data driver; and (d) means for operating the gate driver and the data driver to display the stored pixel data corresponding to one frame in a plurality of successive unit frames, each including a corresponding plurality of successive sub-frames, wherein each unit frame repeatedly displays the same image, has the same frame period and has a number of sub-frames greater than or equal to a respective bit gradation number, and wherein each sub-frame corresponds to a bit of pixel data; whereby the one frame can be displayed with reduced false contour.