Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on Improvement of Optical Characteristics by Packaging Methods in Three Electrode-Type Reflective Display

3전극형 반사형 디스플레이에서 패키징 방법에 의한 광특성 개선에 관한 연구

  • Park, Sang-Hyun (Department of Electronic Engineering, Chungwoon University) ;
  • Kim, Young-Cho (Department of Electronic Engineering, Chungwoon University)
  • Received : 2016.11.09
  • Accepted : 2017.01.31
  • Published : 2017.03.01

Abstract

In 3 electrode reflective displays using a plastic substrate, unstable packaging induces particle clumping and optical degradation due to external air inflow and electronic ink evaporation. In this work, we fabricate 3 electrode electronic paper using glass wafer, ITO/plastic film, and ITO/glass/gas barrier film as an upper substrate after injecting electronic ink onto the lower substrate. Then, we studied its properties. After operating under stress conditions for 336 hours at $85^{\circ}C$ and 75% humidity, the reflectivity of driven e-paper panels with white color was 25.5% for the panels using glass wafer, 22.5% for plastic film including a gas barrier layer, and 16% for plastic film only. From these optical properties, we conclude that gas barrier film improves upper film isolation as a desirable packaging method.

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