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一个像素电路用于补偿电气特征变化和OLED降解

Ning Wei^1,2, Hongzhen Chu¹, Bo Yu¹

¹School of Electrical Engineering, University of South China, Hengyang 421001, China.

|July 8, 2023

概括

本研究介绍了一种新的5晶体管,2电容器像素电路,用于活性矩阵有机发光二极管 (AMOLED) 显示器. 该电路弥补了晶体管和OLED特征的变化,提高了显示器性能和寿命.

科学领域:

材料科学材料科学材料科学
电气工程电气工程
显示技术显示技术

背景情况:

活矩阵有机发光二极管 (AMOLED) 显示器的需求非常高.
薄膜晶体管 (TFT) 的电气特性和OLED降解影响显示性能的变化.

研究的目的:

为AMOLED显示器提供一种新的电压补偿像素电路.
为了解决TFT和OLED退化中的值电压和移动性变化.

主要方法:

一个5晶体管,2电容器 (5T2C) 电路设计,使用无形氧化氧化TFTs.
同时提取晶体管和OLED的门电压.
在数据输入过程中产生与流动性相关的放电电压.

主要成果:

该电路有效地弥补了门电压和移动性的变化.
补偿OLED降解,防止闪,并使数据电压范围广泛.
对于±0.5V门电压变化,OLED电流误差率 (CERs) 保持在3.89%以下,对于±30%的移动性变化,则保持在3.49%以下.

结论:

拟议的5T2C电路为AMOLED显示器的非理想性提供了强大的补偿.
这种设计通过减轻电气变化和降解来提高显示器的可靠性,性能和寿命.

关键词:

在OLED降解下,OLED降解.移动性的变化变化.像素电路的电路是一个像素.门电压的变化电压编程电压编程

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