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首页> 外文期刊>IEEE Electron Device Letters >High-Speed Voltage-Programmed Pixel Circuit for AMOLED Displays Employing Threshold Voltage One-Time Detection Method
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High-Speed Voltage-Programmed Pixel Circuit for AMOLED Displays Employing Threshold Voltage One-Time Detection Method

机译：采用阈值电压一次性检测方法的AMOLED显示器的高速电压编程像素电路

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摘要

This letter presents a high-speed, voltage-programmed pixel circuit for active-matrix organic light-emitting diode displays employing threshold voltage one-time detection method. The proposed pixel circuit that consists of one driving thin-film transistor (TFT), four switching TFTs, two capacitors, and four control signal lines can effectively compensate for the threshold voltage shift of the driving TFT and the OLED degradation. The threshold voltage of one-time detection method is realized by an ingenious application of capacitor coupling effect, and it is well-verified by comparing it with the conventional driving scheme. In this method, data is directly renewed without the periods of initialization and threshold voltage detection from the second-frame beginning. Moreover, this method can also be applied to other compensation pixel circuits.
机译：这封信提出了一种采用阈值电压一次性检测方法的有源矩阵有机发光二极管显示器的高速电压编程像素电路。所提出的由一个驱动薄膜晶体管（TFT），四个开关TFT，两个电容器和四个控制信号线组成的像素电路可以有效地补偿驱动TFT的阈值电压偏移和OLED退化。一次检测方法的阈值电压是通过巧妙地应用电容器耦合效应来实现的，并且通过与常规驱动方案进行比较已得到了很好的验证。在该方法中，从第二帧开始就直接更新数据，而没有初始化和阈值电压检测的时间段。而且，该方法也可以应用于其他补偿像素电路。

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