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首页> 外文期刊>Electron Device Letters, IEEE >Lifetime Extension Method for Active Matrix Organic Light-Emitting Diode Displays Using a Modified Stretched Exponential Decay Model
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Lifetime Extension Method for Active Matrix Organic Light-Emitting Diode Displays Using a Modified Stretched Exponential Decay Model

机译：有源矩阵有机发光二极管显示器的改进的扩展指数衰减模型的寿命延长方法

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摘要

In this letter, we propose a compensation method for organic light-emitting diode (OLED) degradation occurring in a digital driving scheme for active-matrix OLED displays. The proposed method, in which we are the first to propose, employs the modified stretched exponential decay (SED) model to characterize the OLED degradation and compensates for the associated luminance decrease; the lifetime of an OLED panel can thereby be extended. The OLED panel is fabricated using low-temperature poly-Si thin-film transistors, and measured to verify the modified SED model and the proposed compensation method. The measurement results show that the luminance degradation with and without the proposed method is 0.3% and 6%, 4% and 17.8%, and 7.4% and 30.4%, for red, green, and blue OLEDs, respectively. This measurement is taken after 40 h of operation under a 350 cd/m initial luminance. Accordingly, the proposed compensation method extends the lifetime of the OLED panel up to 72.5, 15.5, and 20.75 times longer in red, green, and blue OLEDs, respectively, compared with the conventional method.
机译：在这封信中，我们提出了一种针对有源矩阵OLED显示器的数字驱动方案中发生的有机发光二极管（OLED）退化的补偿方法。该方法是我们首次提出的方法，它采用改进的拉伸指数衰减（SED）模型来表征OLED的退化并补偿相关的亮度降低。从而可以延长OLED面板的寿命。使用低温多晶硅薄膜晶体管制造OLED面板，并进行测量以验证改进的SED模型和建议的补偿方法。测量结果表明，对于红色，绿色和蓝色OLED，使用和不使用建议的方法的亮度下降分别为0.3％和6％，4％和17.8％，以及7.4％和30.4％。该测量是在350 cd / m的初始亮度下运行40小时后进行的。因此，与传统方法相比，所提出的补偿方法将红色，绿色和蓝色OLED的OLED面板的寿命分别延长了72.5、15.5和20.75倍。

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