Design of Driving Waveform for Shortening Red Particles Response Time in Three-Color Electrophoretic Displays

Micromachines

Zichuan Yi¹  Xichen Zhou¹  Wenjun Zeng¹  Jianjun Yang¹  Liming Liu¹  Yiming Zhao¹  Chongfu Zhang¹  Feng Chi¹  Haoqiang Feng¹  Guofu Zhou² 

[1] 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;

关键词: electrophoretic displays;    driving waveform;    response time;    reference gray scale;    red particles;   

DOI  :  10.3390/mi12050578

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown