| abstract |
An improved OLED color display device, in which a display pixel has a plurality of subpixels of different colors, wherein the areas of the subpixels are different in size based on the emission efficiency of the emissive elements and the chromaticity of a target display white point, thereby protecting the subpixels whose emission efficiency is low from prematurely deteriorating, wherein the improvement comprises the relative sizes of the subpixels being further based on the relative luminance stability over time of the subpixels, thereby further extending the useful lifetime of the display. |