A Triple-Layered Microcavity Structure for Electrophoretic Image Display

Author

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

Author_Institution

Sch. of Adv. Mater. Sci. & Eng., Sungkyunkwan Univ., Suwon, South Korea

Volume

58

Issue

4

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

1116

Lastpage

1120

Abstract

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 indium-tin-oxide-patterned glass and flexible polyethylene substrates are also provided.

Keywords

electronic paper; electrophoretic displays; glass; indium compounds; microcavities; polymers; resists; ITO; agglomeration elimination; dry film resist; electronic paper; electronic-ink particle; electrophoretic image display cell; middle channel layer; rigid glass; saturation voltage; triple-layered microcavity structure; voltage -30 V; voltage 30 V; Electrodes; Glass; Image color analysis; Indium tin oxide; Ink; Physics; Substrates; Dry film resist (DFR); electronic paper (e-paper); electrophoretic display (EPD); triple-layered microcavity structure;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2011.2107556

Filename

5711660