Single-layered multi-color electrowetting display by using ink-jet-printing technology and fluid-motion prediction with simulation

Yun Sheng Ku, Shu Wei Kuo, Yu Sheng Huang, Ching-Yao Chen, Kuo Long Lo, Wei Yuan Cheng*, Jyh Wen Shiu

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

This paper describes a single-layered multi-color electrowetting display (EWD) by using ink-jet-printing (IJP) technology and comparing different pattern electrodes with the use of the numerical investigations of ANSYS FLUENT®. This work consists of two parts: The first describes the design of implementing a single-layered multi-color EWD and the second demonstrates the application of ANSYS FLUENT® simulation in different pattern electrodes settings on the proposed EWD. The single- layered multi-color EW device was evaluated by using various colored oils without adopting a color filter. The single-layered multi-color EWD at a driving voltage of 25 V can achieve a maximum aperture ratio and reflectivity of 80% and 38.5%, respectively. The colored saturation of R, G, B oils can increase to 50% (NTSC: 13.3-27.8%). In addition, a radiate electrode at the required viewable area condition of 85% and force 5 * Fk, which results in ink stable contraction and a shorter response time of 50% (radiate vs. square), was proposed. The experimental results and simulation demonstrate that ink-jet-printing (IJP) technology along with the use of radiate electrodes can result in a single-layered multi-color EWD with a shorter response time.

Original languageEnglish
Pages (from-to)488-495
Number of pages8
JournalJournal of the Society for Information Display
Volume19
Issue number7
DOIs
StatePublished - 1 Jul 2011

Keywords

  • Electrowetting display
  • Ink-jet printing
  • Single-layered multi-color

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