Research progress of OLED sticking image

WENG Le; SHI Da-wei; GUO Jian; YU Zhi-nong

doi:10.37188/CJLCD.2022-0128

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Research progress of OLED sticking image

Device Physics and Device Preparation | 更新时间：2022-12-07

- Research progress of OLED sticking image
- Chinese Journal of Liquid Crystals and Displays Vol. 37, Issue 9, Pages: 1140-1150(2022)
- 作者机构：
  
  1.北京理工大学光电学院，北京市混合现实与先进显示技术工程研究中心，北京 100081
  2.重庆京东方显示技术有限公司，重庆 400714
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China(2021YFB3600703);National Natural Science Foundation of China(61874009)
- DOI：10.37188/CJLCD.2022-0128
  CLC：
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WENG Le, SHI Da-wei, GUO Jian, et al. Research progress of OLED sticking image. [J]. Chinese Journal of Liquid Crystals and Displays 37(9):1140-1150(2022)
DOI：

WENG Le, SHI Da-wei, GUO Jian, et al. Research progress of OLED sticking image. [J]. Chinese Journal of Liquid Crystals and Displays 37(9):1140-1150(2022) DOI： 10.37188/CJLCD.2022-0128.

摘要

有机发光二极管（Organic Light-Emitting Diode， OLED）显示技术通过有机材料的自主发光，展现出广色域、低能耗、柔性化等优点，是最具发展潜力的显示技术之一。目前OLED显示仍存在寿命短、亮度低和可靠性差等问题，这些问题最终导致残像现象的发生，本文旨在分析和总结OLED显示残像问题的研究进展和相关解决方案。首先，阐释了OLED显示残像问题与OLED材料寿命和薄膜晶体管（Thin Film Transistor， TFT）稳定性的关联，关注柔性与刚性OLED器件的结构差异，进一步总结、归纳了OLED残像的产生机制。其次，针对不同的残像诱发原因，讨论了缓解和补偿OLED显示残像的方法，包括提升OLED有机材料寿命和TFT阈值电压稳定性、外部补偿电路等方案。最后，对OLED显示残像问题的进一步解决办法进行了展望。

Abstract

Organic Light-Emitting Diode （OLED） display technology exhibits the advantages of wide color gamut， low energy consumption and flexibility through the self-luminescence of organic materials， and is one of the most promising display technologies. At present， OLED displays still have problems such as short lifetime， low brightness and poor reliability. These problems eventually lead to the occurrence of sticking image. This paper aims to analyze and summarize the research progress and related solutions of OLED sticking image. Firstly， the relationship between OLED sticking image problem and OLED material lifetime as well as thin film transistor （TFT） stability is explained， focusing on the structural difference between flexible and rigid OLED devices， and the principle of OLED sticking image is further generalized. Secondly， for different causes of sticking image， the methods to alleviate and compensate OLED display sticking image are discussed， including schemes to improve the lifetime of organic materials， threshold voltage stability of TFT， and external compensation circuits. Finally， the further solution to the OLED display sticking image is prospected.

关键词

有机发光二极管残像薄膜晶体管柔性显示

Keywords

OLEDsticking imageTFTflexible display

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