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아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 다과를 준비하오니 많은 참석 부탁드립니다


아 래


제목: Color Science for Reflective mode Optical Shutter


연사: 장 재 은  교수님 (대구경북과학기술원)


일시: 2011년 11월 2일(수) 오후 4:30


장소: e+첨단강의실 (31214호실)



Reflective mode color device is one of hot issues in new technology area due to various powerful application ,such as e-paper, outdoor signage, and smart window. The urgency of achieving this is also driven by the desire to alleviate the environmental burden of producing paper from plants. Electronic paper provides the ultimate in recyclability of the medium in which words and still images are conveyed. The most important factor for successful commercialization of a reflective mode optical shutter device is the achievement of a color image similar to a photograph. Various techniques have been explored to mimic the high resolution of photograph with electronic devices, such as electrophoresis, electro-wetting, microelectromechanical (MEM) mirrors and liquid crystals. However, most of techniques have displayed poor color images and with only black and white images approaching acceptable quality being possible currently. The main reason for the poor quality of color images is assumed to be the placement of parallel color bars in the unit structure (pixel) from which they are made up. Here we will discuss the main factors of reflective mode color imaging in the point of color science with its basic principle. To improve the quality of the color the color forming layers, i.e. Cyan(C), Magenta (M), Yellow (Y) or Red (R) Green (G) Blue (B), can be stacked within the pixel structure, vertical to the direction of view . Unfortunately, this structure requires three separate drive circuits as well as complicated assembly making it impractical. To be widely adopted, it is essential that R, G, B, W, and Black (BK) can be incorporated in one pixel unit. Therefore, we will touch new technologies which have a high probability to achieve this concept, as well.



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