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


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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