液晶与显示2016，Vol.31Issue(6)：563-568,6.DOI:10.3788/YJYXS20163106.0563
一种支持OLED亮度补偿的电流型PWM像素驱动电路
Current PWM pixel driving circuit with OLED luminance compensation
摘要
Abstract
OLED microdisplay will suffer the pixel degradation and the luminance degradation after working in the high light and high contrast ratio state for a long time,which induces the ghost phe-nomenon.Therefore,this article proposes an improved current PWM pixel driving circuit which make compensations for the OLED pixel degradation.At the same time,the proposed circuit can also read the anode voltage of the OLED pixel,so the degree of the OLED degradation can be calculated and the luminance degradation can be compensated.This paper analyses the circuit structure and the compen-sation principle on the OLED degradation and luminance degradation.The key parameters which af-fect the OLED degradation compensation are obtained by the simulations.The experiment results show that the ratio of the OLED degradation of the proposed current PWM driving circuit is only 50%of the traditional 2T1C driving circuit when the difference of pixel degradation is less than 40 MΩ.关键词
衰退补偿/电流型PWM驱动电路/残影/OLED阳极电压Key words
recession compensation/current PWM driving circuit/sticking/OLED anode voltage分类
信息技术与安全科学引用本文复制引用
季渊,王成,冉峰,李天,刘万林..一种支持OLED亮度补偿的电流型PWM像素驱动电路[J].液晶与显示,2016,31(6):563-568,6.基金项目
国家自然科学基金(No．61376028) （No．61376028）
