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Proceedings Paper

An improved driving waveform reference grayscale of electrophoretic displays
Author(s): Li Wang; Zichuan Yi; Bao Peng; Guofu Zhou
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Paper Abstract

Driving waveform is an important component for gray scale display on the electrophoretic display (EPD). In the traditional driving waveform, a white reference gray scale is formed before writing a new image. However, the reflectance value can not reach agreement in each gray scale transformation. In this paper, a new driving waveform, which has a short waiting time after the formation of reference gray scale, is proposed to improve the consistency of reference gray scale. Firstly, the property of the particles in the microcapsule is analyzed and the change of the EPD reflectance after the white reference gray scale formation is studied. Secondly, the reflectance change curve is fitted by using polynomial and the duration of the waiting time is determined. Thirdly, a set of the new driving waveform is designed by using the rule of DC balance and some real E-ink commercial EPDs are used to test the performance. Experimental results show that the effect of the new driving waveform has a better performance than traditional waveforms.

Paper Details

Date Published: 15 October 2015
PDF: 9 pages
Proc. SPIE 9672, AOPC 2015: Advanced Display Technology; and Micro/Nano Optical Imaging Technologies and Applications, 967204 (15 October 2015); doi: 10.1117/12.2199212
Show Author Affiliations
Li Wang, South China Normal Univ. (China)
Zichuan Yi, South China Normal Univ. (China)
Bao Peng, Shenzhen Institute of Information Technology (China)
Guofu Zhou, South China Normal Univ. (China)
Guohua Optoelectronics (China)
Academy of Shenzhen Guohua Optoelectronics (China)


Published in SPIE Proceedings Vol. 9672:
AOPC 2015: Advanced Display Technology; and Micro/Nano Optical Imaging Technologies and Applications
Byoungho Lee; Yikai Su; Min Gu; Xiaocong Yuan; Daniel Jaque, Editor(s)

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