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Color Electrophoretic Image Display Based on Movement of Particles in Color Insulating Liquid

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Black and white Electrophoretic Image Display (EPID) is already commercially available as an electronic document viewer, sub-display in cell-phone, etc. Furthermore, Color EPID device coupled with color filters is demonstrated. In this system, there is a problem of the decreasing of the reflection light intensity of white view in order to pass a filter. We have proposed novel Color EPID based on the movement of white and black particles in a colored insulating liquid. We used two kinds of white particles, such as non-electrophoretic polymer particles and negatively charged titanic oxide particles. Non-electrophoretic white particles are used for light scattering and increasing the intensity of the color insulating liquid's luminosity. The display cell is consisted of one common transparent electrode coated on the top grass substrate and two driving electrodes coated on the bottom grass substrate. The movement of charged particles is controlled by the change of polarity of voltage applied to two driving electrodes. Both of white and black particles move to the driving electrodes when each driving electrode is applied to positive and negative voltage, respectively, we can see color image through the common electrode.

Document Type: Research Article

Publication date: 2009-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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