• Title/Summary/Keyword: Ki-ho School

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High-efficiency BIRA for embedded memories with a high repair rate and low area overhead

  • Lee, Joo-Hwan;Park, Ki-Hyun;Kang, Sung-Ho
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.12 no.3
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    • pp.266-269
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    • 2012
  • High-efficiency built-in redundancy analysis (BIRA) is presented. The proposed BIRA uses three techniques to achieve a high repair rate using spare mapping registers with adjustable fault tags to reduce area overhead. Simulation results show that the proposed BIRA is a reasonable solution for embedded memories.

Characterization of Chemical Vapor Condensation Reactor for Parylene-N Thin Film Deposition

  • Lee, Jong-Seung;Yeo, Seok-Ki;Park, Chin-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.897-900
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    • 2003
  • Chemical vapor condensation (CVC) reactor was investigated for the deposition of Parylene-N thin films as the passivation layer for organic light emitting diodes (OLEDs). Several gas inlet manifold designs were tested to improve the deposition rate and its uniformity, and it was found that proper inlet design is crucial to get the desired film properties. Process characterization was also performed with the modified inlets to optimize the process variables.

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A New Scan Electrode Driving Circuit for an AC Plasma Display Panel

  • Yang, Jin-Ho;Kim, Joong-Kyun;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.183-184
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    • 2000
  • A new driving circuit for scan electrode in AC PDP has been developed. The number of scan driver switches can be reduced to one half of the conventional circuit. Capacitance between the electrodes is utilized. Experiments and analysis of the new structure has been carried out to confirm its robustness.

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Multiplexing methods of volume holograms using fiber speckle patterns

  • Kang, Yong-Hoon;Kim, Ki-Hyun;Lee, Byoung-Ho
    • Journal of the Optical Society of Korea
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    • v.2 no.1
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    • pp.38-41
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    • 1998
  • The method of using fiber speckle patterns can be applied to the multiplexing of volume holograms. Fiber speckle patterns enable various multiplexing techniques such as shift, angular, and mode-scrambling methods Hybrid methods involving more than one multiplexing technique are also possible. Some images are stored and retrieved with one or two of multiplexing methods, and the experimental results are discussed.

Neutral Current Reduction Method Using Single-Phase Inverter (단상 인버터를 사용한 중성선 전류 저감 기법)

  • Min, Joon-Ki;Kim, Hyo-Sung;Choi, Jao-Ho
    • Proceedings of the KIEE Conference
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    • 2005.10c
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    • pp.155-157
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    • 2005
  • This paper analyzed the adoption possibility of a low cost single phase active power filter as the neutral current reduction device in three-phase four-wire power system with the balanced or/and unbalnaced nonlinear load conditions. Proposed system can make neutral line current to within rated vale without the phase current THD change of the installed phase line.

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Surface Plasmon Resonance Effect of Ag Layer Inserted in a Highly Flexible Transparent IZTO/Ag/IZTO Multilayer Electrode for Flexible Organic Light Emitting Diodes

  • Park, Ho-Kyun;Jun, Nam-Ho;Choi, Kwang-Hyuk;Kim, Han-Ki
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.601-604
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    • 2008
  • We report on the Ag thickness effect on the electrical and optical properties of indium zinc tin oxide (IZTO)-Ag-IZTO multilayer electrode grown on a PET substrate and the surface plasmon effect of Ag layer on the optical properties of IZTO-Ag-IZTO electrode. Using an IZTO-Ag-IZTO multilayer with a total thickness below ~80 nm, we can obtain high-quality flexible electrode with very low sheet resistance, high transmittance, high work function and superior flexibility.

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Detection of Prevotella intermedia and Prevotella nigrescens using Pn17 and Pn34 DNA Probes

  • Park, Chan-Ho;Kim, Pan-Soon;Kim, Hwa-Sook;Min, Jeong-Bum;Hwang, Ho-Keel;Jang, Hyun-Sun;Cho, Ki-Woon;Baek, Dong-Heon;Kook, Joong-Ki
    • International Journal of Oral Biology
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    • v.35 no.1
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    • pp.13-19
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    • 2010
  • The DNA probes Pn17 and Pn34 were evaluated for their ability to specifically detect clinical strains of P. intermedia and P. nigrescens from a Korean population by dot blot hybridization. These probes were sequenced by extension termination and their specificity was determined by Southern blot analysis. The results revealed that the Pn17 sequence (2,517 bp) partially encodes an RNA polymerase beta subunit (rpoB) and that Pn34 (1,918 bp) partially encodes both rpoB (1-169 nts) and the RNA polymerase beta subunit (rpoB'; 695-1918 nts). These probes hybridized with both HindIII- and PstI-digested genomic DNAs from the strains of P. intermedia and P. nigrescens used in this study. Interestingly, each of the hybrid bands generated from the HindIII-digested genomic DNAs of the two bacterial species could be used to distinguish between them via restriction fragment length polymorphism. These results thus indicate that Pn17 and Pn34 can simultaneously detect P. intermedia and P. nigrescens.