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검색결과 2,215건 처리시간 0.033초

Ultra low temperature polycrystalline silicon thin film transistor using sequential lateral solidification and atomic layer deposition techniques

  • Lee, J.H.;Kim, Y.H.;Sohn, C.Y.;Lim, J.W.;Chung, C.H.;Park, D.J.;Kim, D.W.;Song, Y.H.;Yun, S.J.;Kang, K.Y.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.305-308
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    • 2004

  • We present a novel process for the ultra low temperature (<150$^{\circ}C$) polycrystalline silicon (ULTPS) TFT for the flexible display applications on the plastic substrate. The sequential lateral solidification (SLS) was used for the crystallization of the amorphous silicon film deposited by rf magnetron sputtering, resulting in high mobility polycrystalline silicon (poly-Si) film. The gate dielectric was composed of thin $SiO_2$ formed by plasma oxidation and $Al_2O_3$ deposited by plasma enhanced atomic layer deposition. The breakdown field of gate dielectric on poly-Si film showed above 6.3 MV/cm. Laser activation reduced the source/drain resistance below 200 ${\Omega}$/ㅁ for n layer and 400 ${\Omega}$/ㅁ for p layer. The fabricated ULTPS TFT shows excellent performance with mobilities of 114 $cm^2$/Vs (nMOS) and 42 $cm^2$/Vs (pMOS), on/off current ratios of 4.20${\times}10^6$ (nMOS) and 5.7${\times}10^5$ (PMOS).

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Carbon Monoxide as a Novel Central Pyrogenic Mediator

  • Jang, Choon-Gon;Lee, Seung-Jin;Yang, Sang-In;Kim, Jin-Hak;Sohn, Uy-Dong;Lee, Seok-Yong
    • Archives of Pharmacal Research
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    • 제25권3호
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    • pp.343-348
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    • 2002

  • Carbon monoxide (CO) are produced by heme oxygenase (HO), and HO was detected in hypothalamus. However, the roles of CO produced in hypothalamus was not fully elucidated. So, we tested the effects of CO on body temperature because preoptic-anterior hypothalamus was known as the presumptive primary fever-producing site. CO-saturated aCSF ($4{\;}{\mu}l$, i.c.v.) and hemin ($10{\;}{\mu}g$, i.c.v.) elicited marked febrile response. Pretreatment with indomethacin completely inhibited CO- and hemin-induced fever. Zinc protoporphyrin-IX ($10{\;}{\mu}g$, i.c.v.) or ODQ ($50{\;}{\mu}g$, i.c.v.) partially reduced hemin-induced febrile response. Dibutyryl-cGMP ($100{\;}{\mu}g$, i.c.v.) produced profound febrile response and this febrile response was attenuated by indomethacin. These results indicate that endogenous CO may have a role as a pyrogenic mediator in CNS and CO-mediated pyresis is dependent on prostaglandin production and partially on activation of soluble guanylate cyclase.

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단백질 분석을 기초로한 Cordyceps속 동충하초의 분류 (Classification of Cordyceps Species Based on Protein Banding Pattern)

  • 성재모;이현경;유영진;최영상;김상희;김용욱;성기호
    • 한국균학회지
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    • 제26권1호통권84호
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    • pp.1-7
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    • 1998

  • 동충하초 균주의 종간 또는 종내의 근연관계를 구명하고자 단백질 분석을 실시한 결과 25개 공시 균주는 85%의 유사도범위에서 세개의 그룹으로 분류되었다. C. militaris 종내의 유사도는 $0.787{\sim}1.000$ 범위로 나타났으며 C. kyushuensis는 $0.958{\sim}1.000$으로 상당히 높은 유사성을 보였다. C. pruinosa역시 종내의 유사성이 $0.993{\sim}1.000$의 높은 수준을 보였다. C. militaris종내에서는 형태적으로 다른 C. militaris균주와는 달리 다소 매생한 형태의 자낭각을 형성한 C210균주와 C298균주가 단백질분석에서도 약 91%의 상동성을 보이며 clustering되었다. 또한 유충을 기주로 자실체를 형성하는 균주들(C108, C225-1, C228)에 있어서도 약 89%의 높은 상동성을 보이며 clustering되었다. C. militaris그룹과 가장 가까운 근연관계를 보인 그룹은 박각시 나방의 유충을 기주로하는 C. kyushuensis와 인시목의 번데기를 기주로 자실체를 형성하는 C. pruinosa로 C. militaris그룹과는 약 87%의 상동성을 보였으며 C. pruinosa와 C. kyushuensis간에는 88%의 상동성을 보였다. 인시목의 번데기를 기주로 자실체를 형성하며 평판배지상에서 분생포자를 형성하는 C. bifusispora는 불완전 균인 Paecilomyces tenuipes와 89%의 상동성을 보였으며 풍뎅이 성충만을 특이적으로 침입하는 C. scarabaeicola는 이 두종과 약 82%의 상동성을 보였다 C. militaris로 동정한 C118의 경우는 단백질 분석에서도 밴드양상이 C. militaris그룹과는 상당히 다른 양상을 보였다.

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Field Emission-Back Light Unit Fabricated Using Carbon Nanotube Emitter

  • Kim, H.S.;Lee, J.W.;Lee, S.K.;Lee, C.S.;Jung, K.W.;Lim, J.H.;Moon, J.W.;Hwang, M.I.;Kim, I.H.;Kim, Y.H.;Lee, B.G.;Choi, Y.C.;Seon, H.R.;Lee, S.J.;Park, J.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.277-280
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    • 2007

  • Field emission-back light unit (FE-BLU) was fabricated using carbon nanotube (CNT) emitter. Local dimming and local brightening techniques were achieved, which results in very high contrast ratio. In addition, the motion blur phenomenon, one of the serious problems of liquid crystal display (LCD) with cold cathode fluorescent lamp (CCFL)-BLU, was removed from LCD-TV by using FE-BLU.

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C 언어로 구현된 스마트 그리드 모니터링 시스템을 위한 LabVIEW와 C 언어의 TCP/IP통신 (TCP/IP communication between LabVIEW and C language for Smart Grid Monitoring System)

  • 김주은;최남섭;양효식;한병문
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2010년도 추계학술대회
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    • pp.359-360
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    • 2010

  • In smart grid system which uses photovoltaic system, fuel cells and so on, a program implemented with C language is used for control and measurement. When using programs implemented with C language GUI is difficult to watch control and monitor the smart grid system. But LabVIEW is a graphical programming language and it is easy to design GUI screen and to manage many variables such as real-time output of electric power including solar cell, wind power system and fuel cell. This paper suggests LabVIEW and C-language TCP/IP communication for smart grid monitoring system i mplemented with C-language.

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