• Title/Summary/Keyword: formative delay

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Understanding the Physics of Plasma Display Addressing

  • Nagorny, Vladimir P.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.23-28
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    • 2007
  • This article discusses physical processes affecting the speed of addressing discharge, and ways to both significantly increase the speed, and lower the cost of addressing.

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Discharge delay reduction by controlling the roughness of dielectric surface in AC PDP

  • Seo, Ki-Ho;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.1491-1494
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    • 2006
  • We report a method for reducing the address discharge delay. The address discharge delay was reduced when the MgO protective layer was made on the dielectric area which was made rough intentionally. The delay reduction was more pronounced in the formative delay.

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The Reduction of Address Discharge Delay Time Using a New Driving Method (새로운 구동방식을 이용한 어드레스 방전 지연시간의 감소)

  • Song, Keun-Young;Kim, Gun-Su;Seo, Jeong-Hyun;Lee, Seok-Hyun
    • Proceedings of the KIEE Conference
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    • 2004.11a
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    • pp.123-125
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    • 2004
  • In order to achieve high efficiency and low cost, new high-speed addressing method is suggested. This can be achieved by reducing the address discharge delay time through the priming effect. This paper suggests a new ADR (Address During Reset) driving method which provides priming particles by using a separated driving method without adding auxiliary electrode or auxiliary discharge. The experimental results show an approximately loons reduction in the formative delay time of address discharge and a reduction in jitter of over 200ns. Also, due to enough time being available for reset, there was a reduction in light emitted during reset of about 29% which improved the dark contrast ratio considerably.

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The improvement of discharge characteristics and lifetime of PDP by MgO deposition on the phosphor

  • Ha, Chang-Hoon;Kim, Jae-Sung;Jeong, Dong-Cheol;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.232-235
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    • 2002
  • An alternate application of MgO film for the improvement of discharge characteristics and life time in an ac plasma display panel (PDP) is suggested. In this research, we deposited MgO on the phosphor to get the same address characteristics irrespective of each phosphor. To avoid the luminance and efficiency degradation by MgO deposition on the phosphor, we optimized the MgO thickness through experiments. The results showed that PDP with MgO coated phosphor has a uniform formative delay in address discharge and improved degradation characteristics.

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The ADR(Address During Reset) Driving Method for High-Speed Addressing in an AC-PDP (AC PDP에서 고속 어드레싱을 위한 ADR(Address During Reset) 구동 방식)

  • Song Keun-Young;Kim Gun-Su;Lee Seok-Hyun
    • The Transactions of the Korean Institute of Electrical Engineers C
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    • v.54 no.6
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    • pp.269-273
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    • 2005
  • In order to achieve high efficiency and low cost, new high-speed addressing method is suggested. This can be implemented by reducing the address discharge time lag through the priming effect. This paper suggests a new ADR(Address During Reset) driving method which provides priming particles by a separated driving method without adding auxiliary electrode or auxiliary discharge. The experimental results show an approximately 100ns reduction in the formative delay time of address discharge and a reduction in jitter of over 200ns. Also, due to enough time being available for reset, there was a reduction of about 29$\%$ in linht emitted during the reset period considerably.

A Study of Negative Waveform in ac PDP during Reset and Address Periods (ac PDP에서의 Reset과 Address 구간에서 Negative Waveform특성에 관한 연구)

  • Eom, Cheol-Hwan;Kang, Jung-Won
    • Journal of the Semiconductor & Display Technology
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    • v.8 no.1
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    • pp.27-31
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    • 2009
  • A characteristic of new waveform, called a negative waveform, was studied during reset and address periods. IR distribution, black luminance and time delay were measured to compare the negative waveform with the conventional positive waveform. Based on the analysis of IR measurement, the negative waveform could accumulate more wall charges than the positive waveform. Also the black luminance of negative waveform was lower than that of positive waveform under the same bias and ramp-slope conditions. During address period, the discharge time lag was measured. The negative waveform was showed 0.25 us faster formative time lag and 0.1 us faster average time lag than those of positive waveform.

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Improvement in Enzyme Immobilization of Polypyrrole Enzyme Electrode using Radical Transfer (Radical Transfer 반응을 이용한 Polypyrrole 효소전극의 효소고정화 향상)

  • Kim, Hyun-Cheol;Cho, Young-Jai;Gu, Hal-Bon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.04b
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    • pp.100-103
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    • 2000
  • In the case of immobilizing of glucose oxidase into polypyrrole (PPy) using electrosynthesis, the glucose oxidase (GOx) forms a coordinate bond with the polymers backbone. However, because of intrinsic insulation and net-chain of the enzyme, the charge transfer and mass transport are obstructed during the film growth. Therefore, the film growth is dull. We synthesized the enzyme electrode by electropolymerization added some organic solvent. A formative seeds of film growth is delayed by adding ethanol. The delay is induced by radical transfer between ethanol and pyrrole monomer. The radical transfer shares the contribution of dopant between electrolyte anion and GOx polyanion. This may lead to increase amount of immobilized the enzyme in PPy. For the UV absorption spectra of synthetic solution before synthesis and after, in the case of ethanol added, the optical density was slightly decreased for the GOx peaks. It suggests amount of GOx in the solution was decreased and amount of GOx in the film was increased. We established qualitatively that amount of immobilization can be improved by adding a little ethanol in the synthetic solution. It is due to radical transfer reaction. The radical transfer shares the contribution of dopant between small and fast electrolyte anion and big and slow GOx polyanion.

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Improvement on Enzyme Immobilization in Polypyrrole-Glucose Oxidase Enzyme Electrode using Organic Solvent Additive I. Ultraviolet Spectroscopic Analyses (유기용매 첨가에 따른 Polypyrrole-Glucose Oxidase 효소전극의 효소고정화 향상 I. 자외선 분광분석)

  • 김현철;구할본
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.15 no.7
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    • pp.615-620
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    • 2002
  • In the case of immobilizing of glucose oxidase into polypyrrole (PPy) using electrosynthesis, the glucose oxidise (GOx) forms a coordinate bond with the polymers backbone. However, because of intrinsic insulation and net-chain of the enzyme, the charge transfer and mass transport are obstructed during the film growth. Therefore, the film growth is dull. We synthesized enzyme electrodes by electropolymerization added some organic solvent, such as ethanol and tetrahydrofuran (THF). The formative seeds of film growth was delayed by adding ethanol. The delay was induced by radical transfer between ethanol and pyrrole monomer. The radical transfer reactions shared the contribution of dopants between electrolyte anion and GOx polyanion. This led to increase amount of immobilized the enzyme in PPy. For the UV absorption spectra of synthetic solution before synthesis and after, in the case of ethanol added, the optical density was slightly decreased for the GOx peaks. It suggests amount of GOx in the solution was decreased and amount of GOx in the film was increased.

Spectro-electrochemical Analyses of Immobilization of Glucose Oxidase (Glucose Oxidase 고정화에 대한 전기화학적/광학적 분석)

  • Kim, Hyun-Cheol;Cho, Young-Jai;Gu, Hal-Bon;SaGon, Geon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.05b
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    • pp.316-319
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    • 2000
  • In the case of immobilizing of glucose oxidase into polypyrrole (PPy) using electrosynthesis, the glucose oxidase (GOx) forms a coordinate bond with the polymer's backbone. However, because of intrinsic insulation and net-chain of the enzyme, the charge transfer and mass transport are obstructed during the film growth. Therefore, the film growth is dull. We synthesized the enzyme electrode by electropolymerization added some organic solvent, A formative seeds of film growth is delayed by adding the solvent. The delay is induced by radical transfer between the solvent and pyrrole monomer. In the case of adding ethanol, the radical transfer shares the contribution of dopant between electrolyte anion and GOx polyanion. This may lead to increase amount of immobilized the enzyme in ppy. However, adding tetrahydrofuran (THF), the radical transfer is more brisk, resulting in short chained polymer. Therefore, the doping level is lowered and then amount of immobilized of enzyme is decreased. For the UV absorption spectra of synthetic solution before synthesis and after, in the case of ethanol added, the optical density was slightly decreased for the GOx peaks. It suggests amount of GOx in the solution was decreased and amount of GOx in the film was increased. We established qualitatively that amount of immobilization can be improved by adding a little ethanol in the synthetic solution. It is due to radical transfer reaction. The radical transfer shares the contribution of dopant between small and fast electrolyte anion and big and slow GOx polyanion.

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