• 제목/요약/키워드: field emitter

검색결과 265건 처리시간 0.03초

FED용 CNT paste 제조 (Fabrication of CNT paste for FED)

  • 김태홍;김종성
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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    • pp.463-464
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    • 2006
  • 광산업 및 디스플레이 산업의 발전에 따라 관련 제품의 핵심 부품 및 소재 개발이 매우 중요하게 대두되고 있다. 전계방출 소자 및 back light가 되는 나노 발광체의 핵심소재중 하나인 CNT paste는 국내외에서 연구가 진행중이다. 본 연구에서는 메탄올속에서 초음파를 이용하여 분산시킨 CNT 분말, 유기 바인더, 용매, glass frit, Ag powder 등을 사용하여 paste를 만들고, TGA(Thermogravimetric Analyzer)와 SEM(Scanning Electron Microscopy) 분석에 의해 제조 공정의 최적화를 실시하였다.

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A flat thin display with RF electron generation

  • Dijk, R. Van;Vissenberg, M.C.J.M.;Zwart, S.T. De
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.927-930
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    • 2004
  • We report on a new type of a flat and thin display with a secondary emission electron source. In this display device electrons are multiplied between two secondary emission plates under a high frequency electric field. This principle has a few important advantages over a field emission display: the emission comes from flat plates, which reduces the life-time problems of ion bombardment of field emitter tips. Furthermore, the electron emission is space charge limited which gives a uniform electron distribution. The electrons are extracted from the source and accelerated to a phosphor screen to generate light. Gray levels are made by pulse width modulation.

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Field Emission Display 개발동향 및 전망

  • 송윤호;이진호;권상직
    • E2M - 전기 전자와 첨단 소재
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    • 제15권12호
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    • pp.11-18
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    • 2002
  • 전계 방출 디스플레이(Field Emission Display : FED)는 금속 또는 반도체로 만들어진 극미세 구조의 전계 에미터(field emitter)에 전기장을 인가하여 진공 속으로 방출되는 전자를 형광체에 충돌시켜 화상을 표시하는 디스플레이 소자로서, 원리적으로 브라운관(CRT)의 우수한 표시 특성을 그대로 가지면서 경량 박형화가 가능하기 때문에 'Thin CRT'라고 불리기도 한다 FED는 원리적으로 고휘도, 저소비전력, 빠른 응답속도, 광시야각, 고해상도, 우수한 칼라 표시. 넓은 사용온도 범위 등 CRT 및 평판 디스플레이의 장점을 모두 갖추고 있는 이상적인 디스플레이 소자로 평가되어 1990년대 초반부터 세계 유수의 연구 기관들이 본격 적 인 연구 개발을 추진하여 왔지만, 아직까지 평판 디스플레이 시장에 진입 할 만큼 기술 개발이 이루어지지 못하고 있다. 본 고에서는 FED의 근간이 되는 전계방출 소자의 원리 및 종류, FED의 핵심요소 기술, 최근 연구 개발 동향, FED의 응용 분야 및 상용화 가능성 등에 대하여 살펴보기로 한다.

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몰리브덴 팁 전계 방출 소자에 있어서 크롬 게이트 전극 구조의 개선 (Improvement of Geometrical Structure of Cr-Gate Electrode in Mo-tip Field Emitter Array)

  • 주병권;김훈;서상원;이윤희
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제50권10호
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    • pp.532-535
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    • 2001
  • The sputtering condition of Cr thin film was established in order to get Cr gate electrode having a vertical wall structure for Mo-tip FEA. In case of Mo-tip FEA which had a vertically-etched Cr gate electrode, the field enhancement factor, was relatively increased and so the field emission performance in terms of turn-on voltage, emission current and trans-conductance could be improved when compared with the devices having a tapered gate wall.

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질량 분석기에 응용할 수 있는 탄소나노튜브를 이용한 전자방출원 제작 (Fabrication of CNT(Carbon Nanotubes) Emitter for Mass Spectrometer)

  • 정대중;윤현중;정광우;양상식
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 추계학술대회 논문집 전기물성,응용부문
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    • pp.293-296
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    • 2003
  • We report on the fabrication and field emission of carbon nanotube field emitters for mass spectrometer. Due to its high aspect ratio and mechanical strength, we use vertically aligned multi-wall carbon nanotubes prepared by thermal chemical vapour deposition as cathodes, Electrons emitted from a CNT are to ionize some sample molecules. We have successfully attained patterned carbon nanotubes grown on two-dimensional 0.7 mm by 0.7 mm Ni square blocks on Si. The emission characteristics show that the field emission initiates at 200 V.

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Transparent carbon nanotube field emission devices for field emission display and lamp

  • Cho, You-Suk;Lee, Se-Min;Park, Hee-Yong;Lee, Sun-Hee;An, Myung-Chan;Jeong, Se-Young;Kim, Do-Jin
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.1233-1234
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    • 2006
  • A simple new method to fabricate transparent carbon nanotube field emission devices was developed. The highly graphitized single wall carbon nanotubes were attached on Sn/ITO glass by arc discharge method. Post heat treatments below the deformation temperature of soda-lime glass guaranteed a good mechanical adhesion and electrical contact of the nanotubes. The Sn layer was oxidized below $400^{\circ}C$ and became transparent. As increasing the oxidation temperatures, the emission properties became stable and life time of emitter has been increased.

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SIMULATION OF THIN-FILM FIELD EMITTER TRIODE

  • Park, Kyung-Ho;Lee, Soon-Il;Koh, Ken-Ha
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.651-654
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    • 2002
  • We carried out 2-dimensional numerical calculations of electrostatic potential for triode field emitters with planar cathodes using the finite element method. As it turned out, the conventional triode structure with a planar cathode suffered from large gate current and wide spreading of emitted electrons. To circumvent these shortcomings, we proposed a new triode structure. By simply inserting a conducting layer of proper thickness on top of the cathode layer, we were able to modify the electric field distribution on the cathode surface so that low gate current and electron-focusing effect were achieved, simultaneously.

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초소형 전자빔 array에 적용 가능한 탄소 나노튜브 전자방출원 제작 (Carbon nanotubes field emission tip for micro sized E-beam array system)

  • 엄보세;한창호;전국진;염민형;양지훈;박종윤
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2006년도 하계종합학술대회
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    • pp.541-542
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    • 2006
  • In this paper, I propose the field emission tip for the E-beam array system that is made by carbon nanotubes(CNT). CNT is one of the most expected future materials, because of its great mechanical, chemical and electrical characteristics. So CNT can be used for many applications such as electron emitter, sensor, single electron transistor and AFM tip. And CNT will be applied to our E-beam array system as field emission tip so we will improve the system's electrical characteristics.

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Emission Behavior of Screen Printed CNT Field Emitters for Advanced Lamp Application

  • Leer, Myoung-Bok;Kim, Dae-Jun;Song, Yoon-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.691-692
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    • 2009
  • Screen printable CNT pastes were formulated including conductive nano particles (CNPs) and their properties were investigated with an expectation of stable cold cathodes for advanced lamp application. CNT cathodes showed a turn-on field of 1~1.5V/um, a life time of ~100 hours at an emission current density of 10uA/$cm^2$ for DC-bias. Detailed analysis of measured I-V was carried out by applying Fowler-Nordheim model to trace down the origin of emission property degradation.

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