Micromachines (Oct 2023)

Research on Hydrodynamic Characteristics of Electronic Paper Pixels Based on Electrowetting

  • Mingzhen Chen,
  • Shanling Lin,
  • Ting Mei,
  • Ziyu Xie,
  • Jianpu Lin,
  • Zhixian Lin,
  • Tailiang Guo,
  • Biao Tang

DOI
https://doi.org/10.3390/mi14101918
Journal volume & issue
Vol. 14, no. 10
p. 1918

Abstract

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In this paper, we propose a driving waveform with a complex ramp pulse for an electrowetting display system. The relationship between the contact angle and viscosity of inks was calculated based on the fluid-motion characteristics of different viscosities. We obtained the suitable range of viscosity and voltage in the liquid–oil–solid three-phase contact display system. We carried out model simulation and driving waveform design. The result shows that the driving waveform improves the response speed and aperture ratio of electrowetting. The aperture ratio of electrowetting pixels is increased to 68.69%. This research is of great significance to optimizing the structure of fluid material and the design of driving waveforms in electrowetting displays.

Keywords