Zeng Wenjun, Yi Zichuan, Zhou Xichen, Zhao Yiming, Feng Haoqiang, Yang Jianjun, Liu Liming, Chi Feng, Zhang Chongfu, Zhou Guofu
College of Electron and Information, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China.
South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
Micromachines (Basel). 2021 May 19;12(5):578. doi: 10.3390/mi12050578.
Three-color electrophoretic displays (EPDs) have the advantages of multi-color display and low power consumption. However, their red particles have the disadvantage of long response time. In this paper, a driving waveform, which is based on electrophoresis theory and reference gray scale optimization, was proposed to shorten the response time of red particles in three-color EPDs. The driving waveform was composed of erasing stage, reference gray scale forming stage, red driving stage, and white or black driving stage. Firstly, the characteristics of particle motion were analyzed by electrophoresis theory and Stokes law. Secondly, the reference gray scale of the driving waveform was optimized to shorten the distance between red particles and a common electrode plate. Finally, an experimental platform was developed to test the performance of the driving waveform. Experimental results showed that the proposed driving waveform can shorten the response time of red particles by 65.57% and reduce the number of flickers by 66.67% compared with the traditional driving waveform.
三色电泳显示器（EPD）具有多色显示和低功耗的优点。然而，它们的红色粒子存在响应时间长的缺点。本文提出了一种基于电泳理论和参考灰度优化的驱动波形，以缩短三色EPD中红色粒子的响应时间。该驱动波形由擦除阶段、参考灰度形成阶段、红色驱动阶段以及白色或黑色驱动阶段组成。首先，通过电泳理论和斯托克斯定律分析了粒子运动的特性。其次，对驱动波形的参考灰度进行了优化，以缩短红色粒子与公共电极板之间的距离。最后，搭建了一个实验平台来测试该驱动波形的性能。实验结果表明，与传统驱动波形相比，所提出的驱动波形可将红色粒子的响应时间缩短65.57%，并将闪烁次数减少66.67%。
