different luminous materials application_number US 33029302 A description refer to fig1 for a driver circuit of a conventional area color oled display device the display device may be a passive oled display device or an active oled display device that includes a plurality of scanning lines 100 a plurality of data lines 102 and a plurality of luminous materials or pixels 104 and 106 driven by the scanning lines 100 and the data lines 102 based on the present oled technology the red blue and green light materials have been developed while other luminous materials are under development fig1 also includes a data line driver circuit 108 to provide data signals to the data lines 102 and a scanning line driver circuit 110 to provide scanning signals to all scanning lines 100 the scanning line driver circuit 110 has a scanning cycle t to periodically scan all scanning lines 100 the scanning line driver circuit 110 may scan sequentially or alternately either way may be adopted to the invention refer to fig2 for the process flow of the invention first at step 20 obtain the luminous efficiency pi of every luminous material and calculate the least common multiple pm based in the luminous efficiency pi next at step 22 evenly divide the original scanning cycle t of the scanning line driver circuit 110 by the least common multiple pm to obtain pm sub scanning cycles to allow the.