• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 학술대회 및 기술세미나 논문집 디스플레이 광소자
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• pp.47-48
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• 2006

Electrowetting phenomenon is applied in the various field of technology. One of that is electrowetting display as a paper like electronic paper. Fast response and easy to express a color is goodness. In spite of that, the oil movement of the electrowetting display is irregular. So it doesn't look like uniform. Because of the above reason, electrowetting display using patterned electrode is made and the characteristic of oil movement is observed. Electrode and polymer wall is patterned by photo-lithography. We analyze the oil movement according to the variation of size and the position of etched electrode area.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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• pp.495-496
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• 2006

Electrowetting phenomenon is applied in the various field of technology. One of that is electrowetting display as a paper like electronic paper. Fast response and easy to express a color is goodness. In spite of that, the oil movement of the electrowetting display is irregular. So it doesn't look like uniform. Because of above reason, electrowetting display using patterned electrode is made and the characteristic of oil movement is observed. Electrode and polymer wall is patterned by photo-lithography. We analyze the oil movement according to the variation of size and the position of etched electrode area.

• Journal of Information Display
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• 제8권1호
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• pp.14-17
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• 2007

The toner type paper-like display (PLD) has been developed with two polymer particles having opposite polarity composed of polymer, colorant and external additives (nano-sized silica). Nano-sized silica with triboelectric charge was used for the charge control agent (CCA) and influenced on the electrostatic properties of the silica-coated polymer particles. The surface morphology and the cohesiveness of silica-coated polymer particles were changed with the silica coating time. From these results, it was verified that the PLD cell using silica-coated particles (200 seconds) shows a good white appearance and low driving voltage.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.347-347
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• 2007

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.524-524
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• 2006

For decades, the pursuit of volume commercialization of low-power reflective displays with a paper-like look has been an unfulfilled dream. While steady technical progress was made throughout the late 1990s, there were still no volume products incorporating electronic paper displays (EPD) on the market. Now, microencapsulated electrophoretic display technology, also called electronic ink, has moved into volume production with a frontplane laminate (FPL) display component called E Ink Imaging Film™. This film is coated roll to roll on a flexible plastic substrate and integrated into a display module. Today, all-plastic segmented displays are being shipped as well as displays with electronic ink FPL being driven by glass TFT backplanes. A roadmap to active matrix flexible electrophoretic displays is being enabled by rapid technical progress on flexible TFT backplanes by a variety companies. Each of the approaches to these backplanes and flexible active matrix displays has different advantages for the various market segments being pursued including large format flexible displays for e-news and other reader applications, rollable displays for compact readers, and high resolution small format displays up to 400 ppi that can have fully integrated drive electronics to reduce size and drive down costs. Backplane approaches include Si on plastic, organic transistors on plastic, and Si transistors on flexible stainless steel substrate. Progress is also being made on next generation inks, including more reflective inks with higher contrast ratios. A full color 6 inch, 170 pixel per inch (PPI) active matrix display using a newer generation ink has been developed and this will be described and demonstrated. Large format segmented flexible displays will also be described.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 추계학술대회 논문집 Vol.19
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• pp.286-287
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• 2006

Electrowetting display (EWD) is one of the strong candidates for electronic paper like display (EPD). However, in the conventional EWD, the oil movement occurs in random direction so that we can observe irregular distribution of contracted oil in the operation. To realize colorful display and achieve a fast response time, oil movement in the pixel should be directed in a specific direction. In this paper, we report the result of oil contraction with specified direction which is achieved by patterned electrode. From the experiments, we find that the oil movement depends on the portion of etched electrode area and study other influencing factors of patterned electrode on the oil movement.

• 한국전기전자재료학회논문지
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• 제28권8호
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• pp.524-530
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• 2015

We propose a three-electrode type electronic paper display and its fabrication process to realize single color at the same display panel. We establish a fabrication process with the mixing of electronic ink, loading of this ink, electronic ink assembly, packaging and driving. Also, we discuss an operating principle of this panel and the induced image reversal phenomenon by electric field area of the lower electrodes. This phenomenon is not occurred for the panel having $10{\mu}m$ electrode space. By this pixelation structure like this three-electronic paper display, a single color realization without color filter is possible and various kind of color is defined by a dye selection for charged particles and electrically neutral fluid.

• 정보학연구
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• 제9권3호
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• pp.49-57
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• 2006

Electronic paper technology is technology make e- paper, and studying an electronic device is thin like a paper book, an electronic device having made so as to be able to feel as it is feeling of paper like paper newspaper/paper magazines etc. and papers, and crumple freely, or to be able to fold. While electronic paper substitutes for role of paper, a digital function has at the same time a lot of the acids which shall exceed to implement. Necessary, and the continuous researcher who can solve a problem of a fast answer speed for animation implementation, collar implementation and low drive voltage is important a security of a patent right preparing for new market formation, too very in order to form the market where electronic paper can substitute for papers and the existing display as indication elements of a dream, and shall be made to achieve a continuous technical researcher.

• 한국콘텐츠학회논문지
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• 제9권6호
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• pp.117-125
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• 2009

본 논문에서는 테이블탑 디스플레이 인터페이스를 기반으로 제작된 사용자 중심의 실감형 상호작용 전자책에 대하여 기술한다. 전자책은 일반 종이 책이 아닌 컴퓨터를 이용한 가상의 책으로 사용자가 독서를 하는 도중 동영상 자료를 보거나 배경음악, 무비클립, 애니메이션 등을 제공할 수 있는 멀티미디어 콘텐츠이다. 또한 제안하는 시스템의 기반이 되는 테이블탑 디스플레이는 손가락의 터치 점을 이용하여 다양한 명령을 수행할 수 있으므로 기존 입력장치에 비해 사용자가 보다 효과적으로 전자책을 체험하는 것을 돕는다. 본 논문에서는 기존 전자책과 차별화된 실감형 상호작용 전자책에 대한 새로운 방향을 제시하고, 사용자 중심의 제스처 명령을 정의하여 앞으로 컴퓨터와 사용자간의 상호작용을 원활하게 할 수 있는 시스템과 알고리즘을 제안한다.

• Transactions on Electrical and Electronic Materials
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• 제6권5호
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• pp.221-224
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• 2005

To overcome of poor electron injection in organic light-emitting diodes (OLEDs) with Al cathode, a thin layer of inorganic insulating materials, like as LiF, is inserted between an Al cathode and an organic electron transport layer. Though the device, mentioned above, improves both turn on voltage and luminescent properties, it has some problems like as thickness restriction, less than 2 nm, and difficulty of deposition control. On the other hand, Li organic complex, Liq, is less thickness restrictive and easy to deposit and it also enhances the performance of devices. This paper reports the improved electron injection on OLEDs with another I A group metal complex, Potassium quinolate (Kq), as an electron injection material. OLEDs with organic complexes showed improved turn-on voltage and luminous efficiency which are remarkably improved compared to OLEDs with Al cathode. Especially, OLEDs with Kq have longer life time than OLEDs with Liq.