In this paper, luminance compensation and optimization without internal or external sensing circuits to delay OLED degradation based on equivalent lifetime detection is proposed. The proposed method can estimate the dynamic luminance degradation with the equivalent lifetime equation derived by converting display time of any OLED cell at different luminance to a reference display time at a certain luminance. According to the calculated equivalent lifetime, luminance compensation is carried out by increasing drive current. In order to obtain a better lifetime extension of the OLED, three key parameters, such as compensation iteration m, compensation goal value Lgoal, and compensation origin value Lorigin are optimized. Experimental results indicate that the relative error of dynamic luminance degradation estimation is about 2.2% with the proposed method. The lifetime of OLED cells can be prolonged by 32.64% with the optimized parameters m = 5, Lorigin/L0 = 0.75, and Lgoal/L0 = 0.83.

中文翻译：

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基于等效寿命检测的亮度补偿和优化以延迟 OLED 退化


本文提出了基于等效寿命检测的无需内部或外部传感电路的亮度补偿和优化，以延迟 OLED 退化。所提出的方法可以通过将任何OLED单元在不同亮度下的显示时间转换为特定亮度下的参考显示时间而导出的等效寿命方程来估计动态亮度劣化。根据计算出的等效寿命，通过增加驱动电流进行亮度补偿。为了获得OLED更好的寿命延长，对补偿迭代m、补偿目标值Lgoal、补偿原点值Lorigin等三个关键参数进行了优化。实验结果表明，该方法动态亮度劣化估计的相对误差约为2.2%。优化后的参数m=5、Lorigin/L0=0.75、Lgoal/L0=0.83，OLED电池寿命可延长32.64%。