• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 추계학술대회 논문집
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• pp.603-604
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• 2010

• 인포메이션 디스플레이
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• 제7권2호
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• pp.10-13
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• 2006

Active Matrix Flat Panel Display(AM-FPD)의 경쟁력 향상을 위해서 반드시 필요한 고성능, 고생산성 Thin Film Transistor(TFT)를 제작에 사용하는 결정화 방법 중, 산업화에 가장 근접한 레이저 결정화 방법 및 장비에 대해서 기술한다.

• Journal of Korean Vacuum Science & Technology
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• 제3권1호
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• pp.95-97
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• 1999

A 3.12" FED panel was packaged successfully using the anode plate on which phosphors and black matrix were coated and cathode plate containing emitter arrays. The vacuum level of the panel was investigated during panel evacuation, tip-off and getter activation process. The packaged panel exhibited vacuum level below 2${\times}$10-6 Torr. Similar experiments were carried out for 10" panel made of bare plates. In addition, the vacuum level of two panels was compared continuously after tip off process; one with the getter and the other without it.

• 한국분말재료학회지
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• 제22권1호
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• pp.27-31
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• 2015

Flat panel display devices are mainly used as information display devices in the 21st century. The worldwide waste flat panel displays are expected at 2-3 million units but most of them are land-filled for want of a proper recycling technology More specifically, rare earth metals of La and Eu are used as fluorescent materials of Cold Cathode Flourscent Lamp(CCFL)s in the waste flat panel displays and they are critically vulnerable and irreplaceable strategic mineral resources. At present, most of the waste CCFLs are disposed of by land-filling and incineration and proper recovery of 80-plus tons per annum of the rare earth fluorescent materials will significantly contribute to steady supply of them. A dearth of Korean domestic research results on recovery and recycling of rare earth elements in the CCFLs prompts to initiate this status report on overseas research trends and noteworthy research results in related fields.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.57-60
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• 2005

We have recently developed new organic TFT technologies such as self-aligned self-assembly (SALSA) process and a high-resolution color active-matrix LCD panel. A new method to realize high-resolution printable organic TFT array to drive active-matrix flat-panel display will be discussed.

• Journal of Information Display
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• 제11권4호
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• pp.160-164
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• 2010

Organic light-emitting devices (OLEDs) have shown superior characteristics and are expected to dominate the nextgeneration flat-panel displays. Active-matrix organic light-emitting diode (AMOLED) displays, however, have stringent demands on the performance of the backplane. In this paper, the development of thin-film transistors (TFTs) based on indium gallium zinc oxide (IGZO) on both Gen 1 and 6 glasses, and their decent characteristics, which meet the AMOLED requirements, are shown. Further, several display prototypes (e.g., 2.4" AMOLED, 2.4" transparent AMOLED, and 32" AMLCD) using IGZO TFTs are demonstrated to confirm that they can indeed be strong candidates for the next-generation TFT technology not only of AMOLED but also of AMLCD (active-matrix liquid crystal display).

• 자원리싸이클링
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• 제22권2호
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• pp.29-36
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• 2013

국내의 디스플레이 산업규모는 2007년 기준으로 48조원, 판매대수로는 324만대 이상으로 세계 최대 임에도 불구하고 폐 디스플레이 대부분은 소각 및 매립되어 처리되는 실정이다. 평판 디스플레이의 제품 순환 주기가 매우 짧은 것을 감안하면 대략 5년 사용 후 폐기 시 2015년부터는 약 400~500만대의 폐 디스플레이가 국내에 발생할 것으로 예측된다. 2003년부터 EU의 WEEE 재활용 관련 입법의 영향으로 폐 제품의 재활용 및 재자원화는 어느 때 보다 국가적으로 절실한 경제 사회적 이슈가 되었다. 폐 디스플레이에는 금, 은 등의 귀금속이 함유되어 있어 재활용의 경제적 부가가치도 크다. 이와는 별도로 최근 중국의 희소 금속과 희토류의 수출 제한으로 대두된 자원 확보의 측면에서도 폐 디스플레이의 재활용을 통한 인듐 등의 희소금속 소재화는 필수 불가결하다. 그러므로 우리나라에서도 환경적, 사회 경제적, 국가 전략적 측면에서의 파급효과를 종합적으로 고려한 통합 재활용 기술관련 연구 개발 및 이의 상용화가 시급하게 이루어져야만 할 것이다. 이에 본 연구에서는 특별히 LCD의 해체, 분리 공정의 최적화를 통한 해체/분해 절차서 작성, 모듈/부품의 유가 소재 비율 조사를 체계적으로 실시하였다. 이러한 해체/분리 공정 최적화 연구를 통하여 최종적으로 폐 디스플레이 통합 재활용 전체 공정도를 제안하였다.

• 공업화학
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• 제26권4호
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• pp.389-393
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• 2015

인듐은 디스플레이 산업의 발전과 더불어 그 수요가 급격하게 증가하고 있으며 산업적 중요도도 높아 보조 공급원으로 부터의 회수기술 개발이 점점 관심을 얻고 있다. 폐 디스플레이 재활용을 위한 인듐 회수기술은 크게 해체분리, 선별농축 그리고 정제 공정으로 구성되어 있으며 목표하는 소재의 최종 순도에 따라 추가적으로 고도화 공정이 도입된다. 본 논문에서는 인듐 회수를 위해 적용되고 있는 기술에 대해서 소개하며 연구동향과 향후 전망 등에 고찰하였다.

• 한국정밀공학회지
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• 제31권12호
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• pp.1107-1113
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• 2014

In this article, the megasonic cleaning system for cleaning micro/nano particles from flat panel display (FPD) surfaces was developed. A piezoelectric actuator and a waveguide were designed by finite element method (FEM) analysis. The calculated peak frequency value of the quartz waveguide was 1002 kHz, which agreed well with the measured value of 1003 kHz. The average acoustic pressure of the megasonic cleaning system was 43.1 kPa, which is three times greater than that of the conventional type of 13.9 kPa. Particle removal efficiency (PRE) tests were performed, and the cleaning efficiency of the developed system was proven to be 99%. The power consumption of the developed system was 64% lower than that of the commercial system. These results show that the developed megasonic cleaning system can be an effective solution in particle removing from FPD substrate with higher energy efficiency and lower chemical and ultra pure water (UPW) consumption.

• 한국멀티미디어학회논문지
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• 제18권3호
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• pp.312-322
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• 2015

In this paper a new defect detection method for flat panel display that does not require any separately prepared reference images and shows robustness against problems with regard to pixel tolerance and nonuniform illumination condition is proposed. In order to perform defect detection under any magnification value of camera, the proposed method automatically obtains the value of pattern interval through an image analysis. Using the information for pattern interval, an advanced PCSR-G method presented in this paper utilizes neighboring patterns as its reference images instead of utilizing any separately prepared reference images. Also this paper proposes a scheme to improve the performance of the conventional PCSR-G method by extracting and applying additional information for pixel tolerance and intensity distribution considering the value of pattern interval. Simulation results show that the performance of the proposed method utilizing pixel tolerance and intensity distribution is superior to that of the conventional method. Also, it is proved that the proposed method that is implemented using parallel technique based on GPGPU can be applied to real system.