Investigation of the flicker of AMOLED pixel by trap-induced LTPS-TFT current fluctuation model

IF 3.4 2区工程技术 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Displays Pub Date : 2025-07-15 DOI:10.1016/j.displa.2025.103155

Haolin Li, Zheng Zhou, Xiaoyan Liu

引用次数: 0

Abstract

First frame drop (FFD), low-frequency flicker and various refresh rate (VRR) flicker of 7T1C active-matrix organic light emitting diode (AMOLED) are simulated in real time. By modeling the time-dependent trap capture/emission behavior, hysteresis and the current fluctuation of low-temperature polysilicon thin film transistors (LTPS-TFTs) are simulated. Then the proposed model is applied to the simulation of 7T1C AMOLED pixel. Three forms of flickers are simulated by the proposed trap-induced current fluctuation model and its dependence on frequency and trap properties are also evaluated. Our work provides a physical insight for the circuit transient analysis and a guideline for AMOLED pixel design regarding the reliability issue.

查看原文本刊更多论文

利用陷阱诱导LTPS-TFT电流波动模型研究AMOLED像素闪烁

对7T1C有源矩阵有机发光二极管（AMOLED）的第一帧降（FFD）、低频闪烁和各种刷新率闪烁（VRR）进行了实时仿真。通过对低温多晶硅薄膜晶体管（LTPS-TFTs）的阱捕获/发射行为建模，模拟了低温多晶硅薄膜晶体管（LTPS-TFTs）的滞后和电流波动。然后将该模型应用于7T1C AMOLED像素的仿真。利用提出的陷阱感应电流波动模型模拟了三种形式的闪变，并评估了其对频率和陷阱特性的依赖关系。我们的工作为电路瞬态分析提供了物理见解，并为AMOLED像素设计的可靠性问题提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Displays 工程技术-工程：电子与电气

CiteScore

4.60

自引率

25.60%

发文量

138

审稿时长

92 days

期刊介绍： Displays is the international journal covering the research and development of display technology, its effective presentation and perception of information, and applications and systems including display-human interface. Technical papers on practical developments in Displays technology provide an effective channel to promote greater understanding and cross-fertilization across the diverse disciplines of the Displays community. Original research papers solving ergonomics issues at the display-human interface advance effective presentation of information. Tutorial papers covering fundamentals intended for display technologies and human factor engineers new to the field will also occasionally featured.