• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
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• pp.137-140
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• 2005

The electronic dispenser is composed of electronic part and mechanical part. Electronic part is consisted of input keypad, micro-controller, display module, and pump module. In this paper we designed micro-controller for electronic part. The micro-controller controls display module and pump module. The display module is composed by LCD device, and the pump module is composed by motor device. The micro-controller for an electronic dispenser is designed by VHDL. We used WX12864APl for the LCD device and SPS20 for the stepping motor. Also, the micro-controller is designed by Altera Quartus tool and verified with Agent 2000 Design-kit using APEX20K Device. In this paper, we present possibility to adopt of biotechnology field through designing of one-chip controller for an electronic dispenser.

• 한국전기전자재료학회논문지
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• 제25권1호
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• pp.48-52
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• 2012

The charged particle type display device is a kind of the reflectivity type display and shows an image by absorption and reflection of external light source. The charged particle is important factor for driving of the display and quantity of charge per mass of the charged particle determines the driving voltage, contrast ratio, response time, etc. But it is easy for the charged particles to be damaged in the putting process of the display and the damages cause lumping phenomenon of the charged particles. Because the lumping phenomenon makes high driving voltage, low quality of optical properties, short life time, etc, so the charged particles must be filled by stable putting methods. In this paper, we filled the charged particles into the panels by electric fields to improve the electrical and optical characteristics of the display. Also, we analyzed the driving characteristics of the charged particles according to the applied putting voltages.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.902-905
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• 2006

Plasma Display Panels(PDPs) suffer from motion artifacts because of subfield driving method. In this paper, a modified motion compensation method is proposed. We apply the optimized mapping table to the higher subfield group and the fill-up method to the lower subfield group to generate optimum mapping patterns. This method does not concentrate 'on' mappings on higher subfields. Therefore it can possibly become a more robust motion compensation.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 하계종합학술발표회논문초록집
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• pp.488-488
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• 2004

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 하계종합학술발표회논문초록집
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• pp.48-48
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• 2004

• Journal of Information Display
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• 제13권2호
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• pp.67-71
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• 2012

In today's mobile world, small and lightweight information systems are becoming increasingly important. Microdisplays are the base for several near-to-eye display devices. The addition of an integrated image sensor significantly boosts the range of applications. This paper describes the base-building block for these systems: the bidirectional organic light-emitting diode microdisplay. A small and lightweight optic design, an eye-tracking algorithm, and interaction concepts are also presented.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 추계종합학술대회 논문 초록집
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• pp.261-261
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• 2004

• Transactions on Electrical and Electronic Materials
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• 제17권4호
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• pp.212-216
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• 2016

A reflective electronic display that uses negatively and positively charged particles has excellent bistability, a welldefined threshold voltage, and an extremely fast response time in comparison with other reflective displays. This type of display shows images through the movement of charged particles whose motion depends on the value of q/m (charge per mass for a particle). However, the ratio q/m can easily be changed by the forces acting on the charged particles in a cell of the panel and by friction that occurs after mixing oppositely charged particles and in the particle-insertion process. In this study, we propose a method to determine the appropriate range of q/m by using the reflectivity and response time of charged particles to modify q/m. In this manner, the electrical and optical properties of reflective displays are improved.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.2
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• pp.1089-1091
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• 2004

본 연구에서는 fiexible 기판에 e-beam으로 sio2를 증착 한 후 R.F 스퍼터링으로 ito 박막을 증착한 경우와 polyimide를 스핀 코팅한 후 ito를 증착한 경우로 나누어서 실험 하였다. SIO2 박막은 ITO증착을 위해 증착온도 $100^{\circ}C$에서 증착 하였으며 ITO 박막은 투과율을 향상 시키기 위해서 Ar/O2 혼합가스를 이용하였다. SIO2 와 ITO 박막의 두께는 각각 500nm, 200nm로 증착하였다. Stress 분포는 bending test를 통해 발생하는 island의 crackt 수로 측정 하였다. 그 결과 crack 분포는 buffer layer의 young's modulus 크기와 island density 영향이 지배적임을 확인 하였다.

• Journal of Information Display
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• 제13권1호
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• pp.51-54
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• 2012

In this study, the bias-temperature stress and current-temperature stress induced by the electrical stabilities of half-Corbino hydrogenated-amorphous-silicon (a-Si:H) thin-film transistors (TFTs) with different gate electrode geometries fabricated on the same substrate were examined. The influence of the gate pattern on the threshold voltage shift of the half-Corbino a-Si:H TFTs is discussed in this paper. The results indicate that the half-Corbino a-Si:H TFT with a patterned gate electrode has enhanced power efficiency and improved aperture ratio when compared with the half-Corbino a-Si:H TFT with an unpatterned gate electrode and the same source/drain electrode geometry.