一种补偿常关/常开a-IGZO TFT和OLED亮度退化的新型像素电路

Q Engineering

Journal of Display Technology Pub Date : 2016-10-06 DOI:10.1109/JDT.2016.2615658

Chih-Lung Lin;Po-Syun Chen;Po-Chun Lai;Ting-Ching Chu;Ming-Xun Wang;Chia-Lun Lee

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引用次数: 9

摘要

这封信提出了一种新的像素电路，它可以同时补偿常关和常开a-IGZO TFT的阈值电压（VTH）偏移，以及用于超高清有源矩阵有机发光二极管显示器的OLED器件的亮度下降。仿真结果表明，尽管该新型源极跟随器结构具有常关和常开特性，但它还是成功地检测到了阈值电压的1V偏移。此外，测量OLED器件的亮度和阈值电压偏移之间的相互依赖性。基于使用测量的相互依赖性的模拟，在不同的数据电压下，由OLED老化引起的亮度下降被抑制在5%以下。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation

This letter presents a new pixel circuit reaching simultaneous compensation for a threshold voltage (V _TH ) shift of normally-off and normally- on a-IGZO TFTs, as well as luminance drop of an OLED device for ultrahigh-definition active-matrix organic light-emitting diode displays. Simulation results demonstrate the successful detection of a 1 V shift of threshold voltage despite normally-off and normally-on characteristics by the novel source-follower structure. Furthermore, the interdependence between luminance and threshold voltage shift of the OLED device is measured. Based on the simulations using the measured interdependence, the luminance drop caused by OLED aging is suppressed below 5% at different data voltages.

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来源期刊

Journal of Display Technology 工程技术-工程：电子与电气

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

2.8 months

期刊介绍： This publication covers the theory, material, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, design and simulation, materials, electronics, physics, and reliability aspects of displays and the application of displays. The Journal is sponsored by EDS, seven other IEEE societies (BT, CES, CPMT, IA, IM, PHO and SSC) and the Optical Society of America (OSA).