硅基OLED微显示器的集中式融合扫描策略  

Centralized fusion scanning strategy for OLED-on-silicon microdisplay

作　　者：季渊[1,2] 许怡晴 陈宝良 张引 黄忻杰 JI Yuan;XU Yiqing;CHEN Baoliang;ZHANG Yin;HUANG Xinjie(Microelectronic Research&Development Center,Shanghai University,Shanghai 20072,China;LumiCore Microelectronics(Shanghai)Co.Ltd.,Shanghai 20072,China)

机构地区：[1]上海大学微电子研究与开发中心,上海200072 [2]昀光微电子(上海)有限公司,上海200072

出　　处：《液晶与显示》2024年第4期472-481,共10页Chinese Journal of Liquid Crystals and Displays

基　　金：国家自然科学基金(No.61774101)。

摘　　要：本研究针对数字驱动型硅基OLED(Organic Light-emitting Diode,OLED)微显示器在显示动态图像时引发的视觉感知问题,尤其是动态假轮廓和闪烁现象,提出了一种新的扫描策略——集中式融合扫描。集中式融合扫描策略采用灰度权值重分配和融合子场概念,通过对整数子场数目和权值的重新分配,以及将融合子场固定于调制周期中间位置,改善显示器图像质量。实验结果表明,集中式融合扫描在峰值信噪比方面较传统扫描方法平均提高约13%,均方误差降低了约10%,并且结构相似度评分接近1,显著高于现有扫描方法。集中式融合扫描在JEITA闪烁评估中的表现优于19子场扫描法,闪烁量化值降低了约22%。集中式融合扫描策略在改善数字驱动型硅基OLED微显示器的图像显示质量方面提供了一种有效解决方案,为未来显示技术的研究和创新提供了新的方向。A novel scanning strategy——centralized fusion(CF)scanning is proposed to address the visual perception issues encountered in OLED-on-silicon microdisplay driven digitally,especially the dynamic false contour(DFC)and flickering phenomena.This strategy incorporates the concepts of grayscale weight redistribution and the integration of subfields.It improves the quality of display images by reallocating the number and weights of integer subfields,and by positioning the integrated subfield at the midpoint of the modulation cycle.Experimental results indicate that the CF scanning approach achieves an approximate 13%increase in peak signal-to-noise ratio and a 10%reduction in mean square error compared to traditional scanning methods.Moreover,the structural similarity index score approaches 1,significantly surpassing existing scanning techniques.CF scanning outperforms the 19-subfield scanning method in JEITA flicker assessment,with a reduction in flicker quantification value by about 22%.The CF strategy offers an effective solution for enhancing the image display quality of digital-drive OLED-on-silicon microdisplay,paving the way for future research and innovation in display technology.

关 键 词：硅基OLED 微显示器 集中式融合扫描 数字驱动 脉宽调制 

分 类 号：TN27[电子电信—物理电子学]