第26卷第4期 2018年4月
文章编号
1004-924X (2018 )04-0998-08
光学精密工程
Optics and Precision Engineering
OLED微显示器的原子扫描策略
季渊1”，王成其"，陈文栋"，满丽萍,冉峰12（1.上海大学微电子研究与开发中心，上海200072； 2.上海大学机电工程与自动化学院，上海200072）
Vol.26No.4
Apr.2018
摘要：为了实现2K及以上超高清微型显示器的高效率高性能扫描，建立了微型显示器的原子扫描模型。对该模型采用的数学矩阵、基于分形延伸的植人运算进行研究，提出了原子扫描策略并推导了原子扫描序列。首先，对现有的PWM（脉冲宽度调制扫描策略进行扫描性能分析。然后，在分析比较几种扫描策略性能的基础上，说明原子扫描是实现较优性能的最佳选择。实验结果表明：对于256级灰度，采用32位子空间8位权值比为128：64：32：16：9：4：2：1的原子扫描策略具有较好的线性度和较高的传输效率。在分辨率为1600×1600的原子扫描方案中，时钟频率为50 MHz顿频可达90Hz线性度接近99.8%，传输效率高达100%，基本满足超高分辨率扫描系统中高顿频、较低时钟、高线性度的要求。
关键词：有机发光；微显示器；超高分辨率；分形扫描；原子扫描
中图分类号：TN27;TN873
文献标识码：A
doi:10.3788/0PE.20182604.0998
AnatomscanstrategyforOLEDmicrodisplay
JI Yuan*, WANG Cheng-qi', CHEN Wen-dong', MAN Li-ping', RAN Feng".
(l.Microelectronic Research and Development Center,Shanghai University,Shanghai 200072,China; 2.School of Mechatronic Engineering and Automation, Shanghai University,Shanghai 200072,China)
* Corresponding author, E-mail: jiyuar@shu.edu.cn
Abstract: An atom scanning system was established in order to improve scanning efficiency and achieve resolution better than 2K for flat-panel displays. The atom scanning strategy was analyzed using mathematical matrices based on fractal geometry . First, the existing PWM scanning strategies were ana-lyzed. Next, we performed a comparative study of the performances of different scanning strategies, and illus-trated that the atom scanning method exhibits the best performance . Our experimental results indicate that linearity is preferred when the weight value of 8 bits is converted to 128 : 64 : 32 : 16 : 9 : 4 : 2 : 1 for 256 level gray-scale images.For a resolution of 1600X1600 with a clock frequency of 50 MHz,the scanning frame frequency reaches 90 Hz, while the linearity and transmission efficiency are 99 .8% and 100% , respectively . Thus, the requirements of extremely high resolution and frame frequency, low clock frequency, and high linearity are satisfied.
Key words : Organic Light-Emitting Diode(OLED);microdisplay ; ultra-high resolution; fractal scan :
atomscan
收稿日期：2017-10-16；修订日期：2017-11-06，
基金项目：国家自然科学基金资助项目（No.61376028，No.61674100，No.61774101）