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Growth of carbon nanotubes on metal substrate for electronic devices

  • Ryu, Je-Hwang;Kim, Ki-Seo;Lee, Chang-Seok;Min, Kyung-Woo;Song, Na-Young;Jeung, Il-Ok;Manivannan, S.;Moon, Jong-Hyun;Park, Kyu-Chang;Jang, Jin
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1632-1635
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    • 2007
  • We developed a novel growth method of CNTs on metal substrate for device applications, deposited by a triode direct current plasma enhanced chemical vapor deposition (dc-PECVD). With resist-assisted patterning (RAP) method, we had grown CNTs on metal substrate, which were strongly bonded with metal substrate.

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Electron Emission Properties of CNT Arrays Grown with MIcro Molding In Capillary (MIMIC) Assisted Process

  • Lim, Han-Eol;Ryu, Je-Hwang;Lim, Joon-Won;Son, Byoung-Taek;Lee, Yi-Sang;Jang, Jin;Park, Kyu-Chang
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.1535-1538
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    • 2008
  • Carbon nanotube arrays were fabricated using micro molding in capillary (MIMIC) process. Patterns remained on the surface in the pattern complementary to that present in the mold. CNTs were selectively grown on the MIMIC patterned sites with a triode PECVD. And turn on field for $10\;{\mu}A/cm^2$ electron emission current was $2.2\;V/{\mu}m$ turn on field.

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Nanoparticle Cleaning of AMLCD Backplane

  • Oh, J.H.;Kang, D.H.;Choi, M.H.;Kim, S.H.;Choo, B.K.;Hur, J.H.;Jang, J.;Kim, I.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.1425-1428
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    • 2006
  • We have proposed a novel cleaning technology with organic nanoparticles for high-performance TFT array. The surface of the TFT layer becomes more hydrophilic after cleaning by the nanoparticles. This is concluded from the comparison of contact angles for the samples cleaned by various methods. It is found that the drain currents in the subthreshold and off-state regions are less than those for the TFTs cleaned with conventional method.

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Novel fabricated multi layer pattering using novolak and epoxy resin polymer. (Novolak 계열과 Epoxy 계열의 고분자를 이용한 새로운 multi layer 패턴 형성 방법)

  • Kim, Han-Hyoung;Yang, Seung-Kook;Yoo, Han-Suk;Lee, Seung-Yong;O, Beom-Hoan;Lee, Seung-Gol;Lee, El-Hang;Park, Se-Geun
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.549-550
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    • 2006
  • It has become topic continuously at MEMS or semiconductor process to form three-dimensional multilayer structure. In this paper, we devised the new polymer pattern method that has multilayer structure. This is method that uses different kind of polymeric material. Specially, polymers used in this study that we propose became all pattern by photolithography, prevented that process increases. Here, polymer that we use used polymer of epoxy order called "SU-8" and polymer of novolak resin called "AZ-1518". The result, "SU-8" was formed pattern to 3.5um thickness, and "AZ-1518" about pattern 3um thickness. Also, It was been 6um thickness at same pattern area.

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Recognition Of Chinese Named-Entity Using Support Vector Machine (SVM을 이용한 중국어 개체명 식별)

  • Jin, Feng;Na, Seung-Hoon;Kang, In-Su;Li, Jin-Ji;Kim, Dong-Il;Lee, Jong-Hyeok
    • Proceedings of the Korean Information Science Society Conference
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    • 2004.04b
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    • pp.934-936
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    • 2004
  • 본문에서는 최근 들어 각광을 받고 있는 패턴인식 방법론인 Support Vector Machine을 이용하여 중국어 개체명을 식별하는 방법을 제안하고자 한다. SVM(support vector machine)은 입력 자질이 많을 경우에도 안정적인 성능을 나타내고 보편적으로 적용할 수 있는 모델을 개발할 수 있는 장점이 있다. 실험에서 어휘. 품사, 의미부류 등 많은 수의 자질을 이용하였다. 실험결과는 본문에서 제안한 방법이 튜닝을 거치지 않아도 좋은 성능을 나타낼 수 있고, 수행 속도도 만족스럽다는 것을 보여주었다.

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Capillarity-Driven Self-Assembly of Silver Nanowires-Coated Fibers for Flexible and Stretchable Conductor

  • Li, Yi;Chen, Jun;Han, Xiao;Li, Yinghui;Zhang, Ziqiang;Ma, Yanwen
    • Nano
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    • v.13 no.12
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    • pp.1850146.1-1850146.9
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    • 2018
  • The rapid development of smart textiles requires the large-scale fabrication of conductive fibers. In this study, we develop a simple, scalable and low-cost capillary-driven self-assembly method to prepare conductive fibers with uniform morphology, high conductivity and good mechanical strength. Fiber-shaped flexible and stretchable conductors are obtained by coating highly conductive and flexible silver nanowires (Ag NWs) on the surfaces of yarn and PDMS fibers through evaporation-induced flow and capillary-driven self-assembly, which is proven by the in situ optical microscopic observation. The density of Ag NWs and linear resistance of the conductive fibers could be regulated by tuning the assembly cycles. A linear resistance of $1.4{\Omega}/cm$ could be achieved for the Ag NWs-coated nylon, which increases only 8% after 200 bending cycle, demonstrating high flexibility and mechanical stability. The flexible and stretchable conductive fibers have great potential for the application in wearable devices.

Dispersion of Single-Walled Carbon Nanotubes for Display Applications

  • Manivannan, S.;Ryu, Je-Hwang;Jeong, Il-Ok;Lee, Chang-Seok;Kim, Ki-Seo;Jang, Jin;Park, Kyu-Chang
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1625-1628
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    • 2007
  • Dispersion of arc-discharged single-walled carbon nanotubes (SWNTs) has been accomplished by a water soluble polymer wrapping functionalization at room temperature. The treated SWNTs were redispersed in both aqueous and many organic solvents and the solutions were found to be stable.

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Color Variation Improvement by Introducing Double Emission Layers in WPLEDs

  • Kwon, Soon-Kab;Lee, Yong-Kyun;Park, Tae-Jin;Jeong, Su-Hyeon;Jeon, Woo-Sik;Kwon, Jang-Hyuk;Jang, Jin
    • Journal of Information Display
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    • v.7 no.3
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    • pp.19-22
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    • 2006
  • White polymeric light-emitting devices (WPLEDs) have been fabricated from polyfluorene-based (PFO) blue and MEH-PPV polymer blending systems. A device structure of ITO / PEDOT:PSS / Blending polymer / Blue polymer / LiF / Al was employed. This structure of double emission layers showed significant improvement of white color shift phenomenon. A current efficiency of 4.67 cd/A (3,900 $cd/m^{2}$, 6.4 V) and a brightness value of 17,600 $cd/m^{2}$ at 9.4 V with (0.34, 0.35) CIE coordinates at 5 V and (0.29, 0.29) at 9 V were achieved achieved.