NDLI: Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays

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Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays

Content Provider	MDPI
Author	Zhang, Hu Yi, Zichuan Ma, Simin Deng, Shaoning Zhou, Weibiao Zeng, Wenjun Liu, Liming Chi, Feng Hu, Yunfeng Zhang, Chongfu Wang, Li Zhang, Jitao
Copyright Year	2021
Description	The shortage of color in traditional electrophoretic displays (EPDs) can be compensated by three-color EPDs. However, the response time of black particles and white particles is increased. A new driving waveform based on the principle of three-color EPDs and electrophoresis theory was proposed to shorten the response time of black particles and white particles. The proposed driving waveform consisted of an erasing stage, an activation stage, a red driving stage, and a white or a black driving stage. The activation stage was mainly optimized in this paper. Firstly, the motion characteristics of the particles were analyzed using Stokes law and electrophoresis theory. Secondly, an optimal high frequency oscillation voltage was tested in order to improve the activity of the particles. Then, the influence of oscillation period and oscillation times on the activation stage were analyzed for optimizing the reference grayscale. According to the luminance of pixels, an oscillation period of 30 ms and an oscillation time of 30 were determined. The experimental results showed that the response time of black particles was shortened by 45%, and the response time of white particles was shortened by 40% compared with a traditional driving waveform.
Starting Page	1306
e-ISSN	2072666X
DOI	10.3390/mi12111306
Journal	Micromachines
Issue Number	11
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2021-10-25
Access Restriction	Open
Subject Keyword	Micromachines Analytical Chemistry Three-color Electrophoretic Displays Driving Waveform Response Time Black Particle White Particle Reference Grayscale
Content Type	Text
Resource Type	Article

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