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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Studies on Analysis of Particle Lumping and Improvement of Driving Characteristics in Charged Particle Type Display

대전입자형 디스플레이에 있어서 입자뭉침의 분석 및 구동특성 개선에 관한 연구

  • Kim, Young-Cho (Department of Electronic Engineering, Chungwoon University)
  • Received : 2011.09.21
  • Accepted : 2011.10.23
  • Published : 2011.11.01

Abstract

We analyzed various forces affective to the charged particles in closed space, to explain the image degradation and lifetime-shortening phenomena because of particle lumping which is one of the serious problems in reflective displays. It is possible to predict the quantity of q/m which is the most important parameter in determining the optical and electrical characteristics, by calculating the image force and kinetic energy. For stable driving, the quantity of q/m must be in the defined range but it changes during the fabrication process, so we added the filtering process to solve this problem and obtained the well-defined nonlinear driving voltage coinciding with the threshold voltage. And we obtained the fully-driving property which prevents the particle lumping and decides the image quality and lifetime of panel from the optical characteristics and occupation surface of moving particles.

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  1. An Analysis of Driving Property of a Reflective Electronic Display Fabricated by Using Filtering Method of Non-moving Particles vol.13, pp.5, 2012, https://doi.org/10.4313/TEEM.2012.13.5.233
  2. Reflectivity Improvement by Particle Neutralization in a Charged Particle-Type Electronic Display vol.14, pp.1, 2013, https://doi.org/10.4313/TEEM.2013.14.1.36