Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A study on a moving characteristics of charged particle in uniform electric field of Charged Particle type Display

대전입자형 디스플레이의 균등전계내 대전입자의 거동특성에 관한 연구

  • Lee, Dong-Jin (Dept. of Computer Science & Electronice Engineering, Choungwoon University) ;
  • Kim, Young-Cho (Digital Broadcasting & Electronice Engineering, Choungwoon University)
  • 이동진 (청운대학교 전산.전자공학과) ;
  • 김영조 (청운대학교 디지털방송공학과)
  • Published : 2009.06.30
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Abstract

In this paper, we studied on a characteristic of movement of charged particle in equal electric field. In order to fabricate a panel, we used positive charged toner particles of black and negative one of yellow. Panel was biased rectangle pulse without any overshoot. Also, panel's optical characteristics with contrast ratio and viewing angle is measured with RT-200. Response time was measure by using incident laser and detective photodiode. The distribution of m/q of particles by driving in panel throughout the contrast ratio and response time. As a results, driving voltage, contrast ratio, and response time are decided by m/q of charged particles and when m/q of charged particles in panel have regular distribution, it is induce improvement driving characteristics.

본 논문에서는 균일한 전계내의 대전입자의 운동특성에 대하여 연구하였다. 패널을 제작하기 위하여 양전하를 띠는 검은색 대전입자(토너)와 음전하를 띠는 노란색 대전입자(토너)를 사용하였으며, 패널구동을 위하여 오버슈트 현상이 없는 power supply로 구형펄스를 인가하였다. 또한 RT-200을 이용하여 광학특성(대조비, 시야각)을 측정하였으며, 레이저와 포토다이오드를 사용하여 응답속도를 측정하였다. 그리고 응답속도와 대조비를 통하여 대전입자의 m/q 분포를 확인하였다. 그 결과, 대전입자의 구동전압, 대조비, 응답속도는 m/g에 의해 결정되며, 패널내부에 주입된 대전입자의 m/q 분포가 동일할수록 구동특성이 향상되었다.

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References

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