An improvement method of OLED image sticking based on motion detection without additional circuit units is proposed. Images are divided into static images, mixed images, and moving images by comparing the image luminance among different frames. In this method, the static image is moved and its luminance is reduced. As for the mixed image, its luminance is reduced by varying proportions in different areas. When it is a moving image, the luminance of pixels is reduced. The simulation results show that the improvement can effectively improve OLED image sticking by using the image sticking evaluation method proposed. As for static images, the improvement percentage is 55.05%. When it comes to mixed images, the improvement in static areas is 14.29% and it is 3.29% in motion areas. As for moving images, the improvement percentage is 7.35%.

Lifetime is one of the vital factors influencing the OLED displays performance. The existing methods mainly focus on the luminance compensation of OLED pixel to improve lifetime while the OLED luminance uniformity is ignored. The proposed method can optimize luminance compensation and improve luminance uniformity without any sensor. In the proposed method, pixel luminance is compensated while the luminance decays to a setting value. Meanwhile, considering the luminance uniformity, the output grayscale of all pixels of OLED are adjusted based on the actual luminance degradation and input grayscale of each pixel. In addition, luminance non‐uniformity index to evaluate the luminance uniformity is calculated according to the setting weight of each uneven block if the block is considered as uneven blocks. The experimental results indicate that the OLED lifetime can be extended by 28% same as previous method under the luminance compensation optimization and luminance uniformity improvement. Moreover, the luminance non‐uniformity based on human visual characteristics can be improved from 58 to 42.