| Summary: | 碩士 === 國立交通大學 === 光電工程學系 === 99 === In recent years, the development of flat panel displays has been more mature. Under the consideration of power saving and environmental protection, E-paper starts to glow. E-paper possesses both the advantages from general displays and paper. It provides the convenience and instantaneousness of obtaining information as computer does but with lighter, thinner volume and wide viewing angle as paper is. E-paper can be classified into three types, the transmissive, emissive and reflective types. In comparison with the transmissive and emissive types, the reflective types are more power saving because of its bistability characteristics, which make them more commonly used in the market. This technology has been applied in E-books, price tags, flexible displays, smartcards and watches. However, there are still some issues require to be solved. First of all, the method of reducing transition time in order to put videos into practice. Second, the method for realizing color E-papers.
With a large interest in EPDs, research has been conducted mostly from manufacture type, image stability and the image quality. Fewer have been done from the internal charge behavior therefore findings regarding physical mechanism are not complete and unified. Besides, there was scarce research focus on Microcup EPDs or a model proposed to describe the motion of charged species which would be the major factor that dominates the criteria of EPD performances.
This thesis not only confers with the foundation of physical characteristics of electrophoretic type of E-papers but also combines current and optical responses to get deeper insight into electrokinetics of charged particles inside EPDs. Besides, some methods are proposed and verified to reduce the transition time and shortened driving waveforms are designed based on the discovered physical mechanisms.
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