| abstract |
An improved OLED color display device is disclosed, in which a display pixel has a plurality of light-emitting elements of different colors, wherein the areas of the light-emitting elements are different based on the emission efficiency of the light-emitting elements and the luminance stability over time of the light-emitting elements, thereby protecting the light-emitting elements whose emission efficiency or luminance stability is low from prematurely deteriorating, wherein the improvement comprises: the relative areas of the light-emitting elements being further based on a display usage profile including probabilities of different colors to be produced on the display during its lifetime, thereby further extending the useful lifetime of the display. |