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

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 sh...

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Autores principales:	Hu Zhang, Zichuan Yi, Simin Ma, Shaoning Deng, Weibiao Zhou, Wenjun Zeng, Liming Liu, Feng Chi, Yunfeng Hu, Chongfu Zhang, Li Wang, Jitao Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	three-color electrophoretic displays driving waveform response time black particle white particle reference grayscale Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/3c8ebdace58e44edad8d24d3ef1a2670
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spelling	oai:doaj.org-article:3c8ebdace58e44edad8d24d3ef1a26702021-11-25T18:22:58ZDesign of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays10.3390/mi121113062072-666Xhttps://doaj.org/article/3c8ebdace58e44edad8d24d3ef1a26702021-10-01T00:00:00Zhttps://www.mdpi.com/2072-666X/12/11/1306https://doaj.org/toc/2072-666XThe 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.Hu ZhangZichuan YiSimin MaShaoning DengWeibiao ZhouWenjun ZengLiming LiuFeng ChiYunfeng HuChongfu ZhangLi WangJitao ZhangMDPI AGarticlethree-color electrophoretic displaysdriving waveformresponse timeblack particlewhite particlereference grayscaleMechanical engineering and machineryTJ1-1570ENMicromachines, Vol 12, Iss 1306, p 1306 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	three-color electrophoretic displays driving waveform response time black particle white particle reference grayscale Mechanical engineering and machinery TJ1-1570
spellingShingle	three-color electrophoretic displays driving waveform response time black particle white particle reference grayscale Mechanical engineering and machinery TJ1-1570 Hu Zhang Zichuan Yi Simin Ma Shaoning Deng Weibiao Zhou Wenjun Zeng Liming Liu Feng Chi Yunfeng Hu Chongfu Zhang Li Wang Jitao Zhang Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays
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.
format	article
author	Hu Zhang Zichuan Yi Simin Ma Shaoning Deng Weibiao Zhou Wenjun Zeng Liming Liu Feng Chi Yunfeng Hu Chongfu Zhang Li Wang Jitao Zhang
author_facet	Hu Zhang Zichuan Yi Simin Ma Shaoning Deng Weibiao Zhou Wenjun Zeng Liming Liu Feng Chi Yunfeng Hu Chongfu Zhang Li Wang Jitao Zhang
author_sort	Hu Zhang
title	Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays
title_short	Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays
title_full	Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays
title_fullStr	Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays
title_full_unstemmed	Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays
title_sort	design of driving waveform for shortening response time of black particles and white particles in three-color electrophoretic displays
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3c8ebdace58e44edad8d24d3ef1a2670
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Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays

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