• Korean Journal of Optics and Photonics
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• v.12 no.2
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• pp.103-108
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• 2001

In this paper, we designed and made the scanned point detecting system for 3-dimensional measurement of the light emitted from plasma display panel (PDP) , and we measured and analyzed 3-dimensional light emitted from a real PDP by using this scanned point detecting system. The scanned point detecting system has a point detector with a pinhole. The light emitted from the source at the in-focus position can pass through the pinhole and be collected by detector. The light from other sources at outof-focus positions is focused at points in front of or behind the pinhole, and thus it is intercepted by the pinhole. Therefore, we can detect light information from a particular point of a PDP cell of 3-dimensional structure. We know the electric field distribution inside the PDP cell from the 3-dimensionallight intensity distribution measured by using the scanned point detecting system. As the Z axial measurement increases, the intensity of light detected increases and intensity of light detected on the inside edge of the ITa electrode is larger than outside edge of the ITa eletrode and gap of the ITa electrodes. Also, as the measurement point moves from one barrier rib to another, the detected light is weaker near to the barrier ribs than at the center between the barrier ribs. The emitted light is concentrated at the center between barrier ribs. ribs.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.11
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• pp.2014-2019
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• 2006

PDP driving circuit requires switching devices and capacitors to stand up high voltages over 160V. This is the main cause that the power consumption and the cost of a PDP driving circuit increase. Conventional PDP driving circuits consist of 3 voltage sources and 16 switching devices. In this paper, we propose a PDP driving circuit using 2 voltage sources and 12 switching devices that can be operated with a lower supply voltage than conventional driving circuit. The operation of the proposed driving circuit is verified by the computer simulation. Simulation results show that the output signal can drive PDP cell when the supply voltage is higher than 45V in the input frequency range 70kHz to 100kHz.

• Proceedings of the Korean Vacuum Society Conference
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• 2000.02a
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• pp.199-199
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• 2000

본 실험은 궁극적으로 coplanar AC-PDP 구동의 고효율(η)과 고화질을 목표로 두고 있는 기초 물리실험이다. AC-PDP의 최적화는 이 외에 많은 요소를 가지고 있으므로 다각도로 고찰하여야 한다. 이번 연구에서는 VDS(versatile driving simulator)를 이용하여 ramp resets pulses에서의 addressibility를 dynamic margin의 관점에서 조사하였다. AC-PDP panel의 구조는 R,G,B 3개의 cell이 모여 한 개의 화소를 이루고 있으며, R,G,B 각각의 Vf가 다르게 Va가 각각 다르다. 그러므로 실험을 통해 panel에서 R,G,B의 Vf-Va 공통 영역을 최적화하려는데 의미를 두고 있다.

• The Transactions of the Korean Institute of Electrical Engineers C
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• v.51 no.11
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• pp.541-545
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• 2002

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, pulse timing of switch at the sustain period is adjusted for inducing, a weak discharge. Then, after the narrow erase, the 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_Rest voltage of 100V and sustain voltage of 180${\sim}$185V. However, for the conventional method, in which the X and Y electrodes are set to be of equal voltage after the narrow erase, the measured maximum address voltage margin was 31.3V at Y_Rest voltage of 150V and sustain voltage of 180V. This result shows that the measured maximum voltage margin for the proposed method is about 7V(22%) higher than that for the conventional method.

• 한국정보디스플레이학회:학술대회논문집
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• 2002.08a
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• pp.590-593
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• 2002

Using two- and three-dimensional fluid simulation codes, we have suggested several new plasma display panel (PDP) cell structures that have high luminous efficiency compared with conventional structure. To improve the luminance and discharge efficiency, we utilize long discharge path, lower electric field region, and reduction of power consumption by adding one auxiliary electrode or reducing the electrode area. Consequently, luminous efficiency increases about 1.8 times. Furthermore for the resonance radiation trapping effect in PDP system, we have described a self-consistent radiation transport model coupled with fluid simulation using modified Holstein's equation.

• Journal of Information Display
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• v.2 no.2
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• pp.39-44
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• 2001

The conditions of the wall charges and priming particles in a unit discharge cell in AC PDP seriously affect the addressing discharge characteristics in the driving method with ramped setup pulse. Moreover, the discharge conditions at the end of the scan line may be different from the first scan line because of the difference of about 1ms address time. Consequently, the addressing time and its dispersion may be different for any two discharge cells that lead to misfiring and the increase in the total addressing time. In order to improve the addressing time and its dispersion, we have applied different addressing voltage at each cell such as progressively increase pulse voltage instead of constant one. As a result, the addressing time and its dispersion of all cells were improved by about 30% compared with the conventional driving method.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.515-517
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• 2004

The laser absorption spectroscopy has been used for measuresurement of the xenon atoms in the resonant $1S_4$ and metastable $1S_5$ states in coplanar AC PDP. For the purpose of improving VUV luminous efficiency and optimization of PDP cells, it is important to study behavior of excited Xe atoms in a micro-discharge cell of a coplanar AC-PDP. We measured the xenon excited density of $1S_5$ and $1S_4$ state under mixture gas of Ne-Xe(10%) with gas pressure of 350 Torr and sustaining gap distance of 150 um.

• Proceedings of the KIEE Conference
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• 1997.07e
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• pp.1746-1748
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• 1997

The surface discharge type ac plasma display panel(ac PDP) is a flat display devices using gas discharge. In ac PDP, parallel electrodes covered with dielectric layer are on a substrates. The discharge current characteristics are affected by cell structure. In this study, the relationship between the principal design factor and discharge characteristics is discussed, based on experiment, and the current waveform is measured by voltage detector and storage O.S.C. as a parameter of design factor, e.g., electrode gap and width.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.24-27
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• 2009

A hybrid model has been developed which adopts a fluid model for electrons and a particle-in-cell (PIC) model for ions. Using the hybrid simulation, the discharge characteristics are investigated with the diagnostics for the electric field and the wall charge profile, density distributions of charged and excited particles, distributions of ultraviolet lights on phosphor, and the visible lights emitted from the PDP cell. Also, energy and angle distributions of the ions at the MgO protective layer are obtained for the analysis of material effect. The comparison of hybrid simulation results with experimental results as well as that with the conventional fluid simulation shows that the new model is more adequate for the simulation of PDP cells.

• Proceedings of the KIEE Conference
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• 2007.11a
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• pp.167-168
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• 2007

PDP cell에서 발생한 가시광선의 분포를 visible ray trace 방법을 이용하여 계산하였다. 본 논문에서는 ITO-less 구조를 시뮬레이션 하여 가시광선의 출구 효율, illuminance 분포, luminance 분포를 구하였다.