| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 봄 (04/09 ~ 04/10, 고려대학교) |
| 권호 |
29권 1호, p.302 |
| 발표분야 |
기능성 고분자 |
| 제목 |
In-plane Electrophoretic Displays Based on Oppositely Charged particles |
| 초록 |
An electronic reflective display using negatively charged blue particles and positively charged white particles has been designed and constructed. The electronic inks consist of positively charge white particles and negatively charged blue particles dispersed in a dielectric suspending medium was sandwiched between the ITO electrodes separated by and insulating spacer. The white particles were made of polymer-coated TiO2 pigments, and were dispersed with an additive in the suspending medium. The white particles were positive charges by the incorporation of a charge control additives during the fabrication of electronic inks. {image1}The in-plane electrophoretic displays a blue or white pattern depending on the polarity of the applied bias voltage. When a positive bias voltage is applied to the upper ITO electrode, the negative charged blue particles move to the upper ITO electrode because they are negatively charged. When the viewed through the upper electrode, the blue particles adhere to the interface of the upper electrode, and therefore, the indication of “blue image” is perceived by the human eye. The reflection densities of the blue and white image were determined to be 0.94 and 0.38, respectively. The maximum contrast was obtained when the total amount of loading was 10 mg and the weight ratio of the blue particles to the white particles was 5:5. This procedure makes possible rewritable in-plane electrophoretic imaging based on image recording and erasing by the action of an electric field. |
| 저자 |
유동국1, 안정호1, 안성덕2, 강승열2, 서경수2
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| 소속 |
1성균관대, 2한국전자통신(연) |
| 키워드 |
Electronic reflective display; Electronic inks; Polymer-coated TiO2 pigments; Reflection density
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| E-Mail |
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