Current PWM Pixel Driving Circuit for OLED Recession Compensation

RAN Feng; CHU Chu; JI Yuan; WANG Yong; ZOU Rong

doi:10.3788/YJYXS20132804.0534

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Current PWM Pixel Driving Circuit for OLED Recession Compensation

Device Physics & Device Technology | 更新时间：2020-08-12

- Current PWM Pixel Driving Circuit for OLED Recession Compensation
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 4, Pages: 534-538(2013)
- 作者机构：
  
  1. 上海大学微电子研究与开发中心上海
  2. 上海大学材料科学与工程学院上海,200072
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132804.0534
  CLC： TN27
- Received：28 February 2013，
  
  Revised：09 April 2013，
  
  Published：15 August 2013
- 稿件说明：
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冉峰, 储楚, 季渊, 王勇, 邹荣. 针对OLED衰退补偿的电流PWM像素驱动电路研究[J]. 液晶与显示, 2013,28(4): 534-538

RAN Feng, CHU Chu, JI Yuan, WANG Yong, ZOU Rong. Current PWM Pixel Driving Circuit for OLED Recession Compensation[J]. , 2013,28(4): 534-538
冉峰, 储楚, 季渊, 王勇, 邹荣. 针对OLED衰退补偿的电流PWM像素驱动电路研究[J]. 液晶与显示, 2013,28(4): 534-538 DOI： 10.3788/YJYXS20132804.0534.

RAN Feng, CHU Chu, JI Yuan, WANG Yong, ZOU Rong. Current PWM Pixel Driving Circuit for OLED Recession Compensation[J]. , 2013,28(4): 534-538 DOI： 10.3788/YJYXS20132804.0534.

摘要

有机发光二极管(OLED)微显示器在长时间显示高亮、高对比度的静态画面之后会产生像素衰退不同

发光亮度衰减存在较大差异

更新画面后存在残影现象。为此

提出了一种电流PWM像素驱动电路对OLED像素衰退做出一定的补偿。文章介绍了电流PWM像素驱动电路的结构及其工作原理

分析了电流PWM像素驱动电路对OLED像素衰退补偿原理。通过实验得出该电路结构中提高OLED衰退补偿效果的几个主要因素。在像素衰退差异在30 M以下时

电流PWM驱动电路的像素衰退率只有传统驱动电路的50%。

Abstract

This paper aims to solve some existing problems in OLED micro display-when showing highlighting static images with a high contrast ratio for very long time

the OLED micro display presents quite different phenomena in the process of pixel and brightness recession

and when the images are updated

sticking appear on the micro display-through making some compensation for the pixel recession on the OLED micro display in the current PWM pixel driving circuit. In the paper

a brief introduction of the structure and theoretical analysis of the working principles of the driving circuit are given. It introduces the principle of OLED pixel recession and compensation in the driving circuit

and analyzes the relations between the recession and compensation process and some parameters in the circuit through trials and errors in the experiment. The conclusion that shows when the difference of the pixel recession is below 30 M

the ratio of pixel recession in the current PWM driving circuit is only 50% of the traditional driving circuit.

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Keywords

references

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