Low Voltage and Rapid Response Time Electrophoretic Display

  • Lee, Y.E. (Image&Materials, Inc.) ;
  • Cho, Y.T. (Image&Materials, Inc.) ;
  • Choi, Y.G. (Image&Materials, Inc.) ;
  • Park, S.C. (Image&Materials, Inc.) ;
  • Lee, M.H. (Image&Materials, Inc.) ;
  • Park, Y.M. (Image&Materials, Inc.) ;
  • Kim, D.Y. (Image&Materials, Inc.) ;
  • Kim, C.H. (Image&Materials, Inc.) ;
  • An, C.H. (School of Advanced Materials Science and Engineering, SungKyunKwan Univ.) ;
  • Kim, H.S. (School of Advanced Materials Science and Engineering, SungKyunKwan Univ.)
  • Published : 2009.10.12

Abstract

In this paper, we describe new approach of ink particle fabrication method for electrophoretic display(EPD) with low voltage and rapid response time. Nano-size ink particles which fabricated using non-aqueous base modified emulsion process and micron-scale particles by non-solvent particle fabrication process are discussed. Finally, specially designed particles and panel structure fabricated considering the interactions between particle/particle, particle/media or particle/electrode dramatically reduce the driving voltages to ${\pm}$ 10V and improve the response time of less than 100msec and white reflectance of 58% for EPD using dielectric fluid as a medium. In case of EPD adapting micron-sized electrophoretic particles and a medium of air, the saturation voltage could be reduced to ${\pm}$ 40V and having white reflectance of 45% without scarification of electrophoretic mobility of the particles.

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