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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Suggestion of Multi-Electrode Type Electronic Paper Film to Can be Used as a Transparent Display

투명 디스플레이로써 활용 가능한 다수전극형 전자종이 필름 제안

  • Lee, Sang-il (Department of Electronic Engineering, Incheon national University) ;
  • Hong, Youn-Chan (Department of Electronic Engineering, Incheon national University) ;
  • Kim, Young-cho (Department of Electronic Engineering, Chungwoon University)
  • Received : 2019.02.14
  • Accepted : 2019.04.08
  • Published : 2019.07.01
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Abstract

A multiple-electrode-type electronic paper film can implement a single color and control the transparency, as it has multiple electrodes in one cell. Therefore, it can be used as a transparent display. In this paper, we explain the structure and driving method of a transparent electronic paper display, and then propose a control method of transmittance. Subsequently, we verify the theory by measuring the transmittance via experiment. Thus, by changing the manner of applying the voltage to three lower electrodes and one upper electrode, transmittance in eight cases could be realized. It was confirmed that the transmittance derived from the experiment could be controlled from a minimum of 6.75% to a maximum of 71.18%.

Keywords

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Fig. 1. Types of transparent displays using flat panel displays.

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Fig. 2. Electrode placement of multi-electrode type electronic paper display.

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Fig. 3. Method for controlling the transmittance of a multiple electrode type electronic paper film.

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Fig. 4. How to measure transmittance.

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Fig. 5. Transmittance measurement result.

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Fig. 6. Microphotograph of sample with different transmittance.

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Fig. 7. The image of the opposite side was observed by varying the transmittance.

Table 1. Aperture ratio according to driving method.

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