• Title/Summary/Keyword: address discharge

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Addressing conditions to transfer optimum surface discharge in ac PDP

  • Yeo, J.Y.;Lee, K.B.;Lee, W.G.;Kim, S.K.;Son, J.B.;Cho, J.S.;Park, C.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.97-98
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    • 2000
  • This paper deals with the relationship between the addressing and the display in ac-PDP. Especially, deals with the transfer probability of surface discharge according to addressing voltage (Va), blocking voltage(Vg) in addressing period and the characteristics of luminance according to sustain voltage(Vs) in sustaining period with ADS(Address Display period Separation) driving method.

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The dependence of the electrical characteristics of MgO on temperature in an AC PDP

  • Ha, Chang-Hoon;Jeong, Dong-Chul;Kim, Joong-Kyun;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.714-716
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    • 2005
  • We studied the dependence of the electrical characteristics of MgO protecting layer on temperature in an AC PDP cell. Careful measurements of the surface resistance of MgO were performed for the temperature range from room temperature to $100^{\circ}C$ with and without the VUV illumination. Experimental results show that the resistivity is affected by not only the temperature but also VUV irradiation. The measurement of wall charge distribution and the address discharge delay time as to the temperature show that the resistivity change of MgO may affect the wall voltage and consequently the discharge delay time.

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A study on the relationship between the condition of addressing and the characteristics of surface discharge in ac-PDP (ac-PDP에서의 어드레스 조건과 면방전 특성과의 상관관계에 관한 연구)

  • Yeo, J.Y.;Lee, K.B.;Lee, W.G.;Son, J.B.;Park, C.H.;Cho, J.S.
    • Proceedings of the KIEE Conference
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    • 1999.07e
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    • pp.2016-2018
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    • 1999
  • Until now, there is no report for the relationship between the condition of addressing and the characteristics of surface discharge in ac- PDP. We have known that such experiments were important to drive a-PDP. Therefore, This paper deals with the probability of transfer and the characteristics of luminance according to addressing voltage (Va), blocking voltage (Vg)in addressing period and sustain voltage(Vs)in sustaining period and we use waveform according to ADS (Address and Display period Separation) method.

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A study on the relationship between the Condition of addressing and the characteristics of Surface discharge in ac-PDP (ac-PDP에서의 어드레스 조건과 면방전 특성과 상관관계에 관한 연구)

  • 여재영;이기범;이우근;손제봉;박정후;조정수
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1999.05a
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    • pp.391-394
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    • 1999
  • Until now, there is no report for the relationship between the condition of addressing and the characteristics of surface discharge in ac-PDP. We have known that such these experiment was important to drive ac PDP Therefore, this paper deals with the probability of transfer and the character of luminance according to addressing voltage(Va) and blocking voltage(Vg) in addressing period and sustain voltage in sustaining period and we use waveform according to ADS(Address and Display period Separation) method

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A Study on the Mutual Effect of DC AND Discharge Cell in the PDPs (PDP의 DC AND 방전셀 상호간 영향에 관한 연구)

  • 이재희;손현성;염정덕
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2003.11a
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    • pp.55-59
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    • 2003
  • 본 연구에서는 새로 고안된 DC방전 AND gate를 구성하는 각 방전셀 상호간의 영향을 방전특성 측면에서 규명하였다. 4개의 각 셀은 서로 공간전하와 결합하여 깊은 연관이 있었으며 그 결과 PDP의 address 방전을 도와주기 위한 프라이밍 방전의 동작마진을 얻기가 매우 어렵다는 것을 정성적으로 알았다. 실험결과 각 전극의 최적화된 방전전압을 결정할 수 있었다.

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Influence of Sustaining Frequency on the luminous Efficiency in AC-PDP (교류형 플라즈마 디스플레이에 있어서 유지방전 주파수에 따른 발광 효율에 미치는 영향)

  • 정의선;김대일
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.14 no.6
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    • pp.1-5
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    • 2000
  • Recently alternating-current Plasma Display Panel(AC-PDP) is in the spotlight as a digital television and high definition television. The panel structure widely adapted in commercial AC-PDP is three electrodes surface discharge type. At present time, the luminous efficiency is around 1lm/W, it should be a key factor for the commercialization. For the high luminous efficiency, the development of panel structure is necessary. At a given panel structure, a driving method should be optimized to get a sufficient luminous efficiency. The display image of AC-PDP could be realized by the repeated light emission from the discharge. Because most of discharge power is consumed in the sustaining period, the optimization of sustaining waveform is very important for the high luminous efficiency. ADS (Address and Display period Separated) driving method is commonly used. The average driving frequency of ADS driving method is ranged by several tens kilo of [kHz], however the actual frequency of sustaining period is in range of 100[kHz] to 200[kHz]. Based on this study, when the phosphor emits the visible light, it has a decay time of few milliseconds due to the material transfer to the phosphor to emit the visible light. Consequently the luminous efficiency decreases in proportion to the driving frequency. It is found that the luminous efficiency could be significantly improved by the low frequency sustaining driving method.

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A Study on the Narrow Erase Method of Surface Discharge AC PDP (면방전 AC PDP에서 세폭소거 방식에 관한 연구)

  • 안양기;윤동한
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.40 no.6
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    • pp.39-47
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    • 2003
  • This paper proposes the new narrow erase method to erase wall charges formed in an AC plasma display panel (PDP) cell. In the Proposed method, sustain switching timing is adjusted for inducing a weak discharge. Then, after the narrow erase, tile voltage of the X electrode is set to differ from that of the Y electrode. For the proposed method, the measured maximum address voltage margin was 38.3V at Y_Reset voltage of 100V and sustain voltage of 180∼185V. However, for the prior method, in which the X and Y electrodes we set to be of equal voltage after the narrow erase, the measured maximum address voltage margin was 31.3V at Y_Reset voltage of 150V and sustain voltage of 180V. This result shows that the measured maximum voltage margin for the proposed method is greater than that for the prior method by ∼7V(22%).

Measurement of Wall Voltage in Reset Discharge of AC PDP

  • Park, K.D.;Jung, Y.;Ryu, C.G.;Choi, J.H.;Kim, S.B.;Cho, T.S.;Oh, P.Y.;Jeon, S.H.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.722-725
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    • 2003
  • In AC plasma display, it is very important to quantify the wall voltage induced by the wall charge accumulated on the dielectric surface. If we know the quantities of the wall voltage in each period of every sequence; reset period, address period and sustain period, then it helps us to design the optimal driving waveform for high efficiency plasma display. We develop a new method to measure the wall voltage with VDS (Versatile Driving Simulator) system. From this method the wall voltage induced by a wall charge profiles just after the reset discharge of every cells in plasma display panel can be investigated and analyzed successfully. It is noted that the wall voltage profiles are influenced by the space charge and then they are stabilized as time goes by. It is also noted that both the remaining wall charge at the previous sequence and space charges contribute to wall voltage quantities just after the reset discharge. It is noted that the wall charges contribute dominantly after a few hundreds microseconds, while the space charges have been decayed within 100 ${\mu}s$ just after the reset discharge.

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Discharge Characteristics of AC-PDP Having Auxiliary Electrodes (보조 전극을 가진 AC-PDP cell구조의 전기 광학적 특성)

  • Jang, Jin-Ho;Kang, Kyung-Il;Lee, Dong-Wook;Lee, Don-Kyu;Kim, Dong-Hyun;Lee, Ho-Jun;Park, Chung-Hoo
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1406-1407
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    • 2007
  • 본 논문에서 제안한 ac-PDP(Plasma display panel) 셀구조는 Long gap의 전극 사이에 보조 전극을 삽입한 구조이다. 일반적으로, long gap 구조를 가진 PDP cell은 높은 방전 개시 전압을 가지므로, Long gap 전극 사이에 보조전극을 삽입하여 방전 개시 전압을 낮춤과 동시에 휘도 상승, 소비 전력의 감소효과로 발광효율의 향상을 가져왔다. 제안한 구조의 구동을 위하여 asymmetric mode와 long gap mode라는 2가지 파형을 가지고 실험하였다. 두 파형은 공통적으로 기존의 ADS(Address and Display period Separated)파형을 Y(Scan), Z(Common), A(Address) 전극에 인가하였으며, 보조적극에는 Z(Common) 전극의 파형을 수정한 형태로 인가하였다. Asymmetric mode는 보조전극에 Z(Common) 전극에 인가되는 파형과 같은 형태의 파형을 인가하여 Long gap의 구조를 가지지만 Short gap에서 방전이 가능하도록 설계하였고, long gap mode는 보조전극에 인가되는 Z(Common) 파형 중 sustain pulse를 초기 3개만을 주어 Short gap에서 방전을 개시함과 동시에 priming 입자를 생성하고, 나머지 sustain 구간에서는 floating시켜 이미 생성된 priming 입자를 long gap에서 구동을 가능하도록 하였다.

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A Study on the Revision of Transport Documents under ISBP 745 (ISBP 745에서의 운송서류 개정 사항 연구)

  • Park, Sae-Woon
    • International Commerce and Information Review
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    • v.15 no.2
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    • pp.261-283
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    • 2013
  • ISBP745 has new provisions about sea waybill, road, rail or inland waterway transport documents which ISBP681 did not have provisions about. The main revisions of ISBP745 which were not existent or different from ICC Opinion are as follows: First, where B/L is required when multimodal transport is used as a modes of transport, the revisions stipulates that it is subject to UCP600 article19. this differs from previous ICC Opinion. Second, when a credit requires a transport document to indicate the name, address and contact details of a delivery agent, for the place of final destination or port of discharge, the address need not be one that is located at the place of destination or port of discharge or within the same country as that of the place of destination or port of discharge. Third, in case there exist a number of shippers and a consignee, multiple transport documents are issued. This rule has a clear stipulation on this case. Transport industry regards the indication of "LCL/FCL" or "CFS/CY" common in this case as that requiring multiple transport documents. However, ISBP745 does not regard it the case as that requiring multiple transport documents. This may cause some confusion in examination of documents. Forth, when partial shipment is allowed, and more than one set of original transport documents are presented as part of a single presentation made under one covering schedule and incorporate different dates of shipment, the earliest of these dates is to be used of the calculation of an presentation period.

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