• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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• pp.988-990
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• 2005

A 5.0-inch plastic TFT-LCD with the resolution of $400{\times}3{\times}300$ lines (120ppi) was developed. The device is a transmissive type with the transparent PES plastic substrates. The PES films with one side barrier coating were used for the device. In order to produce the high resolution display device, the alignments between all the layers for the TFT and CF are essential. The fundamental shrinkage effect and the thermal expansion behavior of the plastic substrates with and without the barrier coatings were studied. The proper annealing processes followed by immediate second bar-rier coating processes provide the optimal alignment between all the layers of the TFT and CF..

• 한국진공학회:학술대회논문집
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• 한국진공학회 2010년도 제39회 하계학술대회 초록집
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• pp.294-294
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• 2010

Over the last decade, dye-sensitized solar cell (DSSC) has attracted much attention due to the high solar-to-electricity conversion efficiency up to 10% as well as low cost compared with p-n junction photovoltaic devices. DSSC is composed of mesoporous TiO2 nanoparticle electrodes coated with photo-sensitized dye, the redox electrolyte and the metal counter electrode. The performances of DSSC are dependent on constituent materials and interface as well as device structure. Replacing the heavy glass substrate with plastic materials is crucial to enlarge DSSC applications for the competition with inorganic based thin film photovoltaic devices. One of the biggest problems with plastic substrates is their low-temperature tolerance, which makes sintering of the photoelectrode films impossible. Therefore, the most important step toward the low-temperature DSSC fabrication is how to enhance interparticle connection at the temperature lower than $150^{\circ}C$. In this talk, the key issues for high efficiency plastic solar cells will be discussed, and several strategies for the improvement of interconnection of nanoparticles and bendability will also be proposed.

• Tribology and Lubricants
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• 제11권1호
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• pp.37-43
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• 1995

Sputtering parameters such as N$_{2}$ flow percentage and bias voltage in reactive TiN film deposition by RF magnetron sputtering system were selected to investigate the effects of sputtering deposition conditions on tribological characteristics of TiN films. Wear scar of the steel ball damaged by TiN films was measured by SEM to understand wear behavior of deposited TiN films. Crystallization and induced strain of TiN were detected by XRD. Wear mode changed from plastic to brittle with increasing N$_{2}$ ratio. Wear scar by sliding with TiN film deposited at around 27% N$_{2}$ ratio was maximum. The results indicate that bias voltage affects tribological behavior by formation of high density film and internal stress.

• Journal of Biosystems Engineering
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• 제41권2호
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• pp.98-107
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• 2016

Purpose: The aim of this study was to find an appropriate polymer film, which could reduce the water condensation for pallet-size modified atmosphere packaging (MAP). Methods: Five different types of films were selected from several commercialized films. Prior to the real food storage test, plastic boxes with wetted plastic balls were used to simulate the high humidity conditions of real food storage. The initial MAP condition was 5% oxygen and 95% nitrogen, and the $O_2$ concentration, the relative humidity and water condensation inside the films were checked on a daily basis. The MAP test for tomatoes was conducted by using the most appropriate film from the five films examined in this study. Results: Every film except Mosspack(R) indicated a similar variation in the $O_2$ concentration over the course of time. The relative humidity near the surfaces of all the films except nylon-6 approached saturation conditions over time. For three kinds of films, namely, low-density polyethylene (LDPE) film, anti-fogging oriented polypropylene (AFOPP) film, and Mosspack(R), the inner surfaces of the films were fully covered with dew after a storage period of a day. Conversely, an area of 4.5% was covered with dew in the case of the poly lactic acid (PLA) film, and there was no dew inside the nylon-6 film. The pallet-size MAP test for tomatoes was conducted by using the nylon-6 film and there was no water condensation inside the nylon-6 film over three weeks of storage. Conclusions: During the pallet scale MAP, water condensation could cause severe fungal infection and wetting of the corrugated box. Hence, it was important to minimize water condensation. This study showed that the MAP films with high WVTR such as nylon-6 and PLA could reduce the water condensation inside the pallet scale MAP.

• 한국실내디자인학회논문집
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• 제29호
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• pp.77-85
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• 2001

The change of society causes the change of art necessarily. The experiments of plastic art which as been done by avant-garde movements at early 20th century have pursued ″Object drama″ consistently as trials of more or less abstract drama. As these plastic arts have used genre or media like circuses, sports, variate, films, screen play, newspapers and a quick method which had not been considered suitable for conventional aesthetic plastic arts, these arts looked provocative and, these provocative plastic arts have ignored universality shown in conventional arts and have caused extreme ″sensation″ accordingly. As a result, abstract art based on style which is against aestheticism and naturalism has been generalized. This style does not deny customary laws of art wholly but it requires new concept. Having ignored traditional styles, a new compositive and responsive way of composition which does not deviate from tradition has been pursued. A new and general understanding of arts which do not deny all conventionally-effective standards extremely has been developed. In this regard, this study analyzes characteristics of Bauhaus Theater which has tried to apply new technology engineering to plastic art as an integrated concept of art and technology amongst the directions of development of provocation, innovation and revolution in case of the plastic art of stage painting, and analyzes how this influences on modern painting in terms of avant-garde arts reviewing the meaning of this theory.

• 마이크로전자및패키징학회지
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• 제23권1호
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• pp.17-22
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• 2016

플렉서블 OLED는 매우 다양한 유기(organic) 및 무기 물질로 이루어져 있으며, 각 층을 증착하는 과정에 의하여 고온에 의한 휨(warpage)이 발생한다. 휨으로 인하여 발생한 굽힘 변형은 후속 공정에 많은 영향을 미치며, 궁극적으로 생산 수율 및 신뢰성을 저하시킨다. 본 연구에서는 플렉서블 OLED 소자의 고온 환경신뢰성 시험 및 공정 단계에서 발생하는 휨 변형을 수치해석을 이용하여 예측하였으며 실험 결과와 비교하였다. 이를 통하여 휨에 가장 큰 영향을 미치는 재료를 파악하고, 궁극적으로 휨을 최소화 함으로써 플렉서블 OLED의 신뢰성을 향상시키고자 하였다. 휨의 측정 및 수치해석 결과, 편광 필름과 베리어 필름이 휨에 많은 영향을 줌을 알 수 있었으며, OCA가 휨에 미치는 영향은 미미하였다. 플렉서블 OLED의 휨에 가장 큰 영향을 주는 소재는 plastic cover이였으며, 휨을 최소화하기 위한 plastic cover 소재의 최적 물성을 실험계획법으로 계산한 결과, 탄성 계수는 4.2 GPa, 열팽창계수는 $20ppm/^{\circ}C$ 일 경우 플렉서블 OLED의 휨은 1 mm 이하가 됨을 알 수 있었다.

• 한국식품영양과학회지
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• 제17권3호
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• pp.191-197
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• 1988

전분가공식품의 주요 원료인 옥수수전분과 단백질강화 또는 육란백질의 대치 단백질인 분리대두단백질을 사료로 하여 전분-단백질의 이성분혼합비율을 오늘날 흔히 사용되고 있는 plastic flim으로 포장하여 상대습도 90%와 $40^{\circ}C$에서 포장재료의 성질이 흡습특성에 미치는 영향을 조사하였다. 포장재료별 투습도는 0.02mm LDPE필름이 $32.6g/m^2/24hrs$ 0.04mm LDPE필름이 $14.01g/m^2/24hrs,$ 0.02mm OPP 필름이 $7.30g/m^2/24hrs,$ 그리고 0.02mm LDPE /0.02 mmOPP coating필름이 $4.86g/m^2/24hrs,$로서 동일한 두께성에서 비교해 볼 때 LDPE필름보다 OPP필름이 습기의 차단성이 대략 4배이상 우수함을 알 수 있었다. 또 식품시료를 포장하여 저장하는 경우도 동일한 두께의 LDPE필름보다 OPP필름이 습기의 차단성이 우수하였다. 그리고 포장한 혼합물의 저장시간에 따른 흡습속도는 일반적으로 전분함량보다는 단백질함량이 많을수록 흡습속도가 크게 증가하는 것을 알 수 있었다.

• 생물환경조절학회지
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• 제16권1호
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• pp.72-77
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• 2007

참외의 저온기 무가온 시설재배에서 원적외선 흡수율이나 무적성 등의 물리적 특성을 향상시킨 필름 피복이 참외 과실품질에 미치는 영향을 조사하기 위하여 과실 성분을 조사하였다. 일반 PE필름과 기능성이 추가된 5가지의 필름을 5동의 하우스에 피복하여 성주지역 2곳에 각각 설치한 후 재배하였다. 하우스 내부 온도는 높은 적외선 흡수를 보였던 필름인 J-1과 J-2에서 K-3에 비해 약 $2{\sim}5^{\circ}C$정도 높았다. 과실의 ${\beta}-carotene$ 함량과 당함량은 기능성 필름과 일반필름에서 유의성 있는 차이를 보여 J-1, J-2, J-3 및 K-1에서 높게 나타났는데 이것은 필름의 특성에 따른 보온효과 때문인 것으로 생각된다. 성숙 후 단맛을 좌우하는 sucrose 함량도 기능성 필름에서 높았는데 이로 인해 당도도 향상되는 결과를 보였다. Ascorbic acid 함량은 투광량과 보온성이 낮은 K-2에서 더 높은 경향을 보였고 무기원소 함량은 처리간에 차이가 없었다. 이상의 결과는 참외의 저온기 단동 하우스재배에서 보온성과 투광성을 향상시킨 필름을 피복함으로써 참외 과실의 품질을 일부 개선할 수 있음을 시사하였다.

• 한국세라믹학회지
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• 제52권3호
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• pp.224-227
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• 2015

In this work, the properties of Indium-Zinc-Tin-Oxide (IZTO) thin films, deposited on polyethylene naphthalate (PEN) with a $SiO_2$ buffer layer, were analyzed with different working pressures. After depositing the $SiO_2$ buffer layer on PEN substrates by plasma-enhanced chemical vapor deposition (PECVD), the IZTO thin films were deposited by RF magnetron sputtering with 1 to 7-mTorr working pressure. All the IZTO thin films show an amorphous structure, regardless of the working pressure. The best morphological, electrical, and optical properties are obtained at 3-mTorr working pressure, with a surface roughness of 2.112-nm, a sheet resistance of $8.87-{\Omega}/sq$, and a transmittance at 550-nm of 88.44%. These results indicate that IZTO thin films deposited on PEN have outstanding electrical and optical properties, and the PEN plastic substrate is a suitable material for display devices.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.543-544
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• 2006

Pentacene thin film transistors fabricated without photolithographic patterning were fabricated on the plastic substrates. Both the organic/inorganic thin films and metallic electrode were patterned by shifting the position of the shadow mask which accompanies the substrate throughout the deposition process. By using an optically transparent zirconium oxide ($ZrO_2$) as a gate insulator and octadecyltrimethoxysilane (OTMS) as an organic molecule for self-assembled monolayer (SAM) to increase the adhesion between the plastic substrate and gate insulator and the mobility with surface treatment, high-performance transistor with field effect mobility $.66\;cm^2$/V s and $I_{on}/I_{off}$>$10^5$ was formed on the plastic substrate. This technique will be applicable to all structure deposited at low temperature and suitable for an easy process for flexible display.