21‐4: Method for Improving Burn‐in for RGBW OLED Displays

We proposed new methods that can improve burn‐in in RGBW OLED displays. While there is only one combination of grey levels ofR, G, B which realize a color in an RGB‐pixel, there are numerous possible combinations of grey levels ofR, G, B and W which can realize a color in an RGBW‐pixel Among the numerous possible combinations, we selected specific combinations that suppress the peak of sub‐pixels' total accumulated amounts of illuminance so that burn‐in can be slowed down And we selected specific combinations that make the pattern of burn‐in less artificial so that the burn‐in can still occur but it can be felt less severe or less recognizable from a human perceptual view.