• Title/Summary/Keyword: discharge delay time

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Characteristic of High Voltage Aging in AC PDPs

  • Lee, Yong-Han;Kim, Oe-Dong;Ahn, Byoung-Nam;Choi, Kwang-Yeol;Kim, Sung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.932-934
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    • 2006
  • A relationship between discharge delay time and the aging method were investigated: A-Y (Address electrode - Scan electrode) aging and conventional X-Y(Common electrode - Scan electrode) aging with the variation of sustain voltage beyond self-erasing discharge. Although A-Y aging decreases discharge delay time, it has several drawbacks like non-uniformity of discharge, degradation of luminous efficiency and a color temperature. In a conventional aging condition which is carried out near the mid-margin voltage, discharge delay time is short in low voltage and high frequency condition. As an alternative to conventional voltage aging, high voltage aging is suggested which is carried out at self-erasing sustain voltage region. High voltage aging shows lower discharge delay time and fast aging speed than conventional voltage aging.

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A study on the discharge characteristics of AC PDP depending on delay time (AC PDP의 delay time에 따른 입자들의 방전특성 연구)

  • Lee, D.K.;Lee, H.J.;Kim, D.H.;Lee, H.J.;Park, C.H.
    • Proceedings of the KIEE Conference
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    • 2004.07c
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    • pp.1751-1754
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    • 2004
  • Effects of delay on the discharge time lag and the controllability of weak discharge mode were studied under single cell driving circumstances of ac PDP. It was found that sufficient number of priming particle is necessary for inducing weak discharge in ramp voltage driving. Discharge time lag was reduced dramatically under priming condition. It is speculated that the increasement of strong discharge is related to the reduction of the $Xe^*(^3P_1)$ particles during the after glow.

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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 effect of the MgO process on the properties of AC-PDPs

  • Kim, Young-Sung;Park, Min-Soo;Ryu, Byung-Gil
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1376-1379
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    • 2007
  • The effects of the MgO fabrication process on the properties of AC-PDPs were examined. MgO films were deposited by e-beam evaporation with various substrate temperatures and oxygen flow rates. MgO films were analyzed by XRD, CL and ellipsometer. Panel properties such as luminance, efficiency, discharge voltage and discharge delay time were measured with test panels. MgO films with higher temperature, smaller oxygen flow rate showed shorter discharge delay time. Also they showed smaller XRD peak intensity. These results revealed that the discharge delay time was strongly influenced by temperature and oxygen flow rate of the MgO fabrication process.

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Study on Characteristics of Write Discharge with Single Sustain Waveform in AC Plasma Display Panel (교류형 플라즈마 디스플레이에서 단일 유지 파형을 가지는 기입 방전의 특성의 연구 )

  • Byung-Gwon Cho
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.36 no.1
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    • pp.56-61
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    • 2023
  • The characteristics of write discharge were investigated when the conventional driving method with the unipolar sustain voltages, and the single sustain driving method applying the bipolar sustain voltage were applied in an AC plasma display. In the case of having a single sustain waveform, the strength of the write discharge is weakened compared to the conventional driving method during the address period, because the wall charge inside the panel is more dissipated by the lower scanning voltage. In the driving method with a single sustain waveform, the bias voltage of the other electrodes was changed to improve the write discharge characteristics. As a result, the intensity of the discharge was enhanced by 32% and the delay time was shortened by 60 ㎲.

Time Delay Characteristics of Radiated Electromagnetic Wave with Partial Discharge (부분방전시 방사전자파의 시간지연특성)

  • Kim, Hae-Joon;Park, Kwang-Seo;Lee, Hyun-Dong;Kim, Ki-Chai;Lee, Kwang-Sik
    • Proceedings of the KIEE Conference
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    • 2001.07c
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    • pp.1774-1776
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    • 2001
  • The most of faults in gas insulation of power facilities are caused by partial discharge. Therefore we simulated partial discharge and measured the radiated electromagnetic wave emitted from partial discharge in the $SF_6$ gas by biconical antenna. This paper describes time delay characteristics of radiated electromagnetic waves with distance between antenna and discharge source.

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Delay Time Modeling for ED MOS Logic LSI and Multiple Delay Logic Simulator (ED MOS 논리 LSI 의 지연시간 모델링과 디자인 논리 시뮬레이터)

  • 김경호;전영준;이창우;박송배
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.24 no.4
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    • pp.701-707
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    • 1987
  • This paper is concerned with an accurate delay time modling of the ED MOS logic gates and its application to the multiple delay logic simulator. The proposed delay model of the ED MOS logic gate takes account of the effects of not only the loading conditions but also the slope of the input waveform. Defining delay as the time spent by the current imbalance of the active inverter to charge and discharge the output load, with respect to physical reference levels, rise and fall model delay times are obtained in an explicit formulation, using optimally weighted imbalance currents at the end points of the voltage transition. A logic simulator which uses multiple rise/fall delays based on the model as decribed in the above has been developed. The new delay model and timing verification method are evaluated with repect to delay accuracy and execution time.

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A study of the Improvement for Jitter and Discharge Delay Time in AC-PDP (AC-PDP에서 지터와 방전 늦음 시간 개선을 위한 연구)

  • Kwon, Shi-Ok;Kim, Ji-Sun;Joung, Bong-Kyu;Hwang, Ho-Jung
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2005.07a
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    • pp.506-507
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    • 2005
  • The effects of addition of $D_2$ to conventional gases [Ne-Xe and He-Ne-Xe] on the discharge characteristics were investigated in this work with the aim of improving the voltage margin, the wall charge and the jitter. The addition of an extremely small gas-inlet amounts of $D_2$ increased the number of electrons which improves. the $Xe^*$ density and $Xe_2^*$ density. As a result, the voltage margin, the jitter and the wall charge increased.

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A New Driving Waveform for Stable Address Discharge in an Alternating Current Plasma Display Panel

  • Kim, Sung-Hwan;Seo, Jeong-Hyun;Lee, Seok-Hyun
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.503-506
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    • 2004
  • In this paper, we suggest a new driving waveform for stable address discharge in AC PDP without the reduction of contrast ratio. To analyze the influence of cross-talk between discharge and non-discharge cells and verify that proposed waveform shows a stable address discharge, we measured the address discharge delay time. The proposed waveform shows the reduction of the cross-talk and concurrently the improvement of address voltage margin compared with those of selective reset waveform having one reset period in 1TV-Field..

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The Electrical Breakdown Characterization of Gas Discharge Tube using Brass Electrode for Surge Protector (과전압 보호용 황동전극 기체방전관의 절연파괴 특성)

  • Kim, Min Il;Jeong, Euigyung;Lee, Sei-Hyun;Lee, Young-Seak
    • Applied Chemistry for Engineering
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    • v.21 no.2
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    • pp.205-210
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    • 2010
  • In this study, a brass electrode gas discharge tube (GDT) was prepared to investigate its discharge characterization, which affects surge protection efficiency and lifetime of GDT. Discharge characterization of GDT using a brass electrode was investigated by changing applied voltage gradient and nitrogen gas pressure inside the GDT. As applied voltage gradient in GDT increased, electrical breakdown voltage and threshold energy largely increased and electrical breakdown time delay decreased. It was found that electrical breakdown voltage, electrical breakdown time delay, and threshold energy were largely decreased with decreasing the nitrogen gas pressure in GDT. As a result, electrical breakdown voltage, electrical breakdown time delay, threshold energy needed to be decreased to increase surge protection efficiency and lifetime. It was also found that the nitrogen gas pressure of GDT influenced strongly the performances as well as life span of it.