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Active matrix organic light emitting diode displays (AMOLED) new pixel design

机译：有源矩阵有机发光二极管显示器（AMOLED）的新像素设计

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摘要

In this paper, a new pixel design is proposed adopting the Active Matrix Organic Light Emitting Diode (AMOLED) display, based on Organic Thin Film Transistor (OTFT) technology. Among literature, different research efforts are applied to optimize pixel circuits for best display qualities (like contrast, brightness, cross-talk elimination, etc.). Thin Film Transistors (TFTs) are used in the pixel design as a switch, and a current source to bias the Organic Light Emitting Diode (OLED) devices that are low in cost and temperature fabrication. However, these thin film transistors suffer from the variation in mobility (mu) and threshold voltage (V-TH), which yields an unstable current, and an image poor quality after that. To overcome this problem, a new pixel design with voltage programmed technique has been designed and simulated benefiting from seven OTFTs characteristics. Compared to other efforts, one capacitor and seven transistors are used. Simulation results show a good compensation technique for a threshold voltage with error rate of 2%. The maximum OLED current is 2.55 mu A which is suitable for a Quarter Video Graphics Array (QVGA) displays.
机译：在本文中，基于有机薄膜晶体管（OTFT）技术，提出了一种采用有源矩阵有机发光二极管（AMOLED）显示器的新型像素设计。在文献中，为了达到最佳显示质量（如对比度，亮度，串扰消除等），人们进行了各种研究工作来优化像素电路。薄膜晶体管（TFT）在像素设计中用作开关和电流源，以偏置成本低，温度低的有机发光二极管（OLED）器件。然而，这些薄膜晶体管遭受迁移率（μ）和阈值电压（V-TH）的变化，这产生不稳定的电流，并且此后图像质量差。为了克服这个问题，设计了一种具有电压编程技术的新型像素设计，并受益于七个OTFT特性对其进行了仿真。与其他工作相比，使用了一个电容器和七个晶体管。仿真结果表明，对于阈值电压，误差率为2％的一种良好的补偿技术。 OLED的最大电流为2.55μA，适用于四分之一视频图形阵列（QVGA）显示器。

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