A triple-layered microcavity structure for electrophoretic image display

Chee Hong An, Jaehyun Yang, Yong Eui Lee, Chul Hwan Kim, Eunkyoung Nam, Donggeun Jung, Mann Ho Cho, Hyoungsub Kim

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2 Citations (Scopus)


An electrophoretic display (EPD) cell with a triple-layered microcavity structure was fabricated using a convenient dry film resist. The inherent structural advantage arising from the function of the middle channel layer as a background colored state enabled the EPD to operate with two different-colored states by using a single type of electronic-ink particles, thereby eliminating the possible agglomeration of oppositely charged ink particles and supporting the potential application of the proposed structure to color the electronic paper. The preliminary operation of this new EPD structure was demonstrated as white and blue display states on a rigid glass exhibiting a contrast ratio of 1.5:1 with saturation voltages of +30 and -30 V, respectively. Successful demonstrations on both the indiumtinoxide-patterned glass and flexible polyethylene substrates are also provided.

Original languageEnglish
Article number5711660
Pages (from-to)1116-1120
Number of pages5
JournalIEEE Transactions on Electron Devices
Issue number4
Publication statusPublished - 2011 Apr 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    An, C. H., Yang, J., Lee, Y. E., Kim, C. H., Nam, E., Jung, D., Cho, M. H., & Kim, H. (2011). A triple-layered microcavity structure for electrophoretic image display. IEEE Transactions on Electron Devices, 58(4), 1116-1120. [5711660]. https://doi.org/10.1109/TED.2011.2107556