| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.478 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | A Photo-addressable Electronic Paper Using Electrophoretic Device |
| 초록 | Recently, paper-like displays have attracted much attention. These paper-like displays show a bistability. The “bistable” means that even if the external power turns off, the recorded images have to remain. The bistability is one of the most important factors for low power consumption, and it is one of the most important properties for the “paper-like” display. As another important property, the paper-like display should be rewritable with sufficient cycles. In general, the writing method is electrical one. But, the photocopy may be one of the writing methods. By an illumination of UV light onto the recordable electrophoretic device (EPD) through the image for transferring, an illuminated region can be differentiated from an illuminated one. Two regions have different electrical properties, by which we can obtain the transferred image of the original one1. In this study, we present a novel photo-addressable electronic paper using the EPD. The UV illumination through an image onto the EPD combined with a polyvinyl carbazole (PVK) layer brings about the different conductivity2 between the illuminated and non-illuminated regions. It was possible to transfer an image onto the EPD. Figure 1 shows the structure of our photo-addressable electrophoretic device. The electronic ink consisting of white particles and blue dye dispersed in a suspending medium was sandwiched between the ITO and PVK/ITO coated glasses. Fig. 1. A schematic diagram for the novel photo-addressable EPD. The white particles were made of polymer-coated TiO2 pigments, and were dispersed with a blue dye (Oil blue N) in the suspending medium (Halocarbon oil). The particles wore negative charges by the incorporation of a charge control agent during the fabrication of the electronic ink. For the image transfer, UV light is simultaneously illuminated on the EPD device with the impression of an electric voltage. This device can be used for a simple re-writable coping tool and other applications of electronic paper. 참고문헌 1. S. Yamamoto, et. al., SID2001 Digest, 362, (2001). 2. N. S. Sariciftci et. al., Science , 1474 (1992). |
| 저자 | 김철암1, 강승열1, 명혜진2, 안성덕3, 유인규1, 김기현1, 오지영1, 백규하1, 서경수1 |
| 소속 | 1전자통신(연), 2인하대, 3고분자공학과 / 전자통신(연) |
| 키워드 | electrophoretic display; photoconducting polymer |
