Aging Model for Life Prediction and Simulation of Organic Light-Emitting Diodes (OLEDs)

2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) Pub Date : 2019-06-10 DOI:10.1109/EEEIC.2019.8783814

G. Z. Abdelmessih, J. M. Alonso, L. Canale, P. Dupuis, Alaa Alchaddoud, G. Zissis

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引用次数: 2

Abstract

This paper proposes a dynamic characterization of OLED aging process. The OLEDs are characterized by a very low dynamic resistance as well as a strong capacitive behavior. Moreover, the OLEDs are very sensitive to over-currents. Thus, the OLED control system should be precisely designed to drive the device. The aim of this study is to establish a dynamic electrical model illustrating the OLED characterization over time. This model is used to create a control system for OLEDs taking into account its characteristic deviation over time. In addition, the model is used to examine the control behavior using simulation, showing its behavior during both transient and steady-state. Furthermore, it is possible to predict the drift of the control system with aging. This ensures better performance for the OLEDs over its whole lifetime, which in return increases its lifetime. Moreover, the paper presents a methodology to predict the lifetime of the OLED just by measuring the voltage across the OLED at rated current. Finally, the proposed modeling is validated by studying the aging of a commercially available OLED.

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有机发光二极管(oled)寿命预测与仿真的老化模型

本文提出了OLED老化过程的动态表征方法。oled的特点是具有非常低的动态电阻和很强的电容性。此外，oled对过电流非常敏感。因此，应该精确地设计OLED控制系统来驱动器件。本研究的目的是建立一个动态电模型来说明OLED随时间的特性。该模型用于创建考虑其随时间变化的特性偏差的oled控制系统。此外，利用该模型对控制行为进行了仿真，显示了其在瞬态和稳态时的行为。此外，还可以对控制系统的漂移进行老化预测。这确保了oled在整个使用寿命期间的性能，从而延长了其使用寿命。此外，本文提出了一种预测OLED寿命的方法，只需测量额定电流下OLED的电压。最后，通过研究商用OLED的老化来验证所提出的模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)

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