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Microcapsule-based materials for electrophoretic displays

Published online by Cambridge University Press:  20 January 2012

Gang Wu ,
Peipei Yin ,
Runying Dai ,
Mang Wang ,
Hongzheng Chen ,
Hecheng Li  and
Dongyuan Liu
Gang Wu
Affiliation:
MOE Key Laboratory of Macromolecule Synthesis and Functionalization, State Key Lab of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Peipei Yin
Affiliation:
MOE Key Laboratory of Macromolecule Synthesis and Functionalization, State Key Lab of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Runying Dai
Affiliation:
MOE Key Laboratory of Macromolecule Synthesis and Functionalization, State Key Lab of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Mang Wang
Affiliation:
MOE Key Laboratory of Macromolecule Synthesis and Functionalization, State Key Lab of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Hongzheng Chen*
Affiliation:
MOE Key Laboratory of Macromolecule Synthesis and Functionalization, State Key Lab of Silicon Materials, and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Hecheng Li
Affiliation:
Lucky Huaguang Graphics Co., Ltd, Nanyang 473003, People’s Republic of China
Dongyuan Liu
Affiliation:
Lucky Huaguang Graphics Co., Ltd, Nanyang 473003, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: hzchen@zju.edu.cn
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Abstract

Electrophoretic displays (EPDs) are attracting a great deal of academic and commercial interest due to the advantages of both electronic displays and conventional paper. The key materials for EPD application of microcapsules are the electrophoretic particles and the capsule wall enwrapping the electrophoretic suspension inside. Here, black and white electrophoretic particles with low density and good dispersity such as titanium dioxide, carbon black, and Cu2Cr2O3 were prepared by surface modification of the pigments. The preparation and properties of the gelatin-based microcapsules prepared by complex coacervation methods are also summarized. The microcapsules have transparent and elastic walls of compact structure, which endows them with good barrier properties and thermal stability for EPD application. EPD prototype devices based on the obtained microcapsules were prepared and could be driven at 9 V.

Keywords

PolymerElectronic materialColloid
Type
Invited Feature Paper
Information
Journal of Materials Research , Volume 27 , Issue 4 , 28 February 2012 , pp. 653 - 662
Copyright
Copyright © Materials Research Society 2012

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