• Title/Summary/Keyword: Displays

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Electron Beam Simulation Technology for CRTs

  • Shirai, Shoji;Oku, Kentarou
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.385-387
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    • 2002
  • The electron beam simulation technology is indispensable for the recent electron gun design. The technology is becoming more and more important for deflection yoke (DY) design and investigation of the interference effects between gun and DY. Further, it may become vital even for shadow mask, glass funnel, exposure lens and magnetic shield.

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LIQUID CRYSTAL DISPLAYS(LCDs)

  • Jeon, Young-Jae
    • Journal of Photoscience
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    • v.5 no.3
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    • pp.137-141
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    • 1998
  • The current status of flat panel display (FPD) technologies is outlined, with emphasis on liquid crystal displays(LCDs). The principles of a number of LCDs are explained and compared with alternative technologies on the flat panel market. Recently annuounced LCDs, their structures, and their underlying technologies are summarized and compared.

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Through Flow Technology;Enabling Highly Reliable Inkjet Manufacturing of Flat Panel Displays

  • Attard, John
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.373-375
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    • 2007
  • Through Flow Technology offers unparalleled advantages for the manufacturing of flat panel displays using inkjet technology, including: outstanding reliability, self-maintenance, selfpriming and simple set up. The Xaar 1001 GS6 is the first product incorporating this technology. The concept and test results will be presented.

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CRT Competitive Strategies Towards Flat Panel Displays

  • Sluyterman, A.A.S.
    • Journal of Information Display
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    • v.4 no.1
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    • pp.38-42
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    • 2003
  • CRTs can survive in the long run for TV applications, because of their realistic reproduction of live images. CRT technology development has to be directed towards form factor, but also attention has to be paid to the form design of sets. The CRT is the only technology allowing a doubly curved screen surface.

A Three-dimensional Magnetic Field Mapping System for Deflection Yoke of Cathode-Ray Tube

  • Park, K.H.;Yoon, M.;Kim, D.E.;Lee, S.M.;Joo, H.D.;Lee, S.D.;Yang, W.Y.
    • Journal of Information Display
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    • v.3 no.4
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    • pp.19-22
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    • 2002
  • In this paper, we introduce an efficient three-dimensional magnetic field mapping system for a Deflection Yoke (DY) in Cathode-Ray Tube (CRT). A three-axis Hall probe mounted in a small cylindrical bar and three-stepping motors placed in a non-magnetic frame were utilized for the mapping. Prior to the mapping starts, the inner contour of DY was measured by a laser sensor to make a look-up table for inner shape of DY. Three-axis magnetic fields are then digitized by a three-dimensional Hall probe. The results of the mapping can be transformed into various output formats such as multi pole harmonics of magnetic fields. Field shape in one, two and three- dimensional spaces can also be displayed. In this paper, we present the features of this mapping device and some analysis results.

Simulations Of a Self-focusing Carbon Nanotube Triode Field Emission Device (전자빔을 자체 집속하는 탄소나노튜브 삼전극 전계방출소자의 시뮬레이션)

  • Lee, Tae-Dong;Ryu, Seong-Ryong;Byun, Chang-Woo;Kim, Young-Kil;Ko, N.J.;Chun, H.T.;Park, J.W.;Ko, S.W.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.11a
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    • pp.538-541
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    • 2002
  • 탄소나노튜브 (CNT)가 도포된 평면형 에미터와 원형 개구의 게이트 전극을 가지는 삼전극 전계방출 소자의 전계방출 특성을 시뮬레이션하였다. 체계적인 시뮬레이션을 위해 소자 내 전위의 공간적 분포 특정을 결정하는 전계형상인자 $\gamma$를 정의하고 이 값에 따른 전위분포의 특성과 방출 전자의 궤적을 계산하였다. 계산 결과$\gamma$ > 1 인 전압조건에서는 에미터의 가운데를 중심으로 강한 전자방출이 발생하고 전자빔이 구조의 축 방향으로 자체 집속됨을 알 수 있었다. 이렇게 되면 에미터와 게이트의 정렬이 전혀 필요하지 않게 되며 또한 별도의 전자집속회로 없이도 에미터와 양극에 있는 형광체가 1:1 로 대응하는 획기적인 디스플레이 구조를 가능하게 해 준다 적정 전압조건에서 CNT의 전계강화인자 $\beta$의 변화에 따른 총 전류를 계산한 결과,$\beta$ >3000인 CNT를 사용할 경우 실제 소자로서 구현이 가능함을 확인하였다.

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Simulation of the Stripe type CNT Field Emitter Triod Structure (띠 모양의 에미터를 가지는 탄소나노튜브 삼전극 전계방출 디스플레이 소자의 시뮬레이션)

  • Ryu, Seong-Ryong;Lee, Tae-Dong;Kim, Yong-Gil;Byun, Chang-Woo;Park, J.W.;Ko, S.W.;Chun, H.T.;Ko, N.J.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.11a
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    • pp.510-513
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    • 2002
  • 띠모양의 에미터와 에미터와 정렬된 띠모양의 케이트 구멍을 가진 탄소나노튜브(CNT) 삼극 구조에 대하여 전계방출 시뮬레이션을 수행하였다. 전자방출은 주로 가장자리에서 발생하였으며 에미터와 게이트사이의 간격이 가까워지면 급격히 증가하였다. 전자방출 특성도 상당히 우수하였다. 한쪽 가장자리만을 사용한 삼극구조의 경우에는 방출된 전자의 궤적이 좁은 띠모양으로 형성되어 방향성이 매우 우수하게 나타났다. 띠모양의 에미터 및 게이트로 이어진 삼극구조는 제작이 용이하고 조립할 때 정렬이 쉬운 장점이 있다.

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Continuous Roll-to-Roll(R2R) sputtering system for growing flexible and transparent conducting oxide electrode at room temperature

  • Park, Yong-Seok;Jeong, Jin-A;Park, Ho-Kyun;Kim, Han-Ki
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1575-1577
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    • 2009
  • We have investigated the characteristics of transparent indium zinc oxide(IZO)/Ag/IZO multilayer electrode grown on polyethylene terephthalate (PET) substrates using a specially designed roll-to-roll sputtering system for use in flexible device are described. By the continuous R2R sputtering of the bottom IZO, Ag, and top IZO layers at room temperature, we were able to fabricate an IZO-Ag-IZO multilayer electrode with a sheet resistance of 6.15 ${\Omega}$/square, optical transmittance of 87.4 %, and figure of merit value of 42.03 10-3 ${\Omega}$-1. In addition, the IZO-Ag-IZO multilayer electrode exhibited superior flexibility to the RTR sputter grown single ITO electrode, due to the existence a ductile Ag layer between the IZO layers. This indicates that the RTR sputtered IZO-Ag-IZO multilayer is a promising flexible electrode that can substitute for the conventional single ITO electrode grown by bath type sputtering for use in low cost flexible device, due to its low resistance, high transparency, superior flexibility and fast preparation by the R2R process.

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Communicating Conservation to the General Public:Conservation Gallery Exhibition at the Wallace Collection, London, UK (영국 월레스 컬렉션의 상설 보존 전시관 운영을 통해 본 보존과 일반 대중과의 교류)

  • Kim, Seoyoung
    • 보존과학연구
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    • s.32
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    • pp.185-193
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    • 2011
  • The Wallace Collection in London (one of the national museums in the UK) has a gallery dedicated to conservation related displays. As well as permanent displays on the manufacturing techniques and materials of artifacts, there is a specially designed space for temporary conservation exhibitions. Through the example of the current conservation exhibition at the Wallace Collection and similar exhibitions and displays from other museums in the UK, this paper will study how the relationship and communication between the conservation profession and the general public have changed, from conservation as a behind-the-scenes and little-known activity to a closer interaction with the public and as a direct educational tool. The general function of a museum can be seen to have evolved from providing passive information to its visitors to offering more active and various forms of education. Conservation has developed with this change towards more awareness of the profession and its role in the preservation of cultural heritage through public outreach programs and displays.

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