• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1999.05a
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• pp.395-398
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• 1999

In ac PDP(plasma Display Panel), the discharge characteristics is very important to display clear images. In this paper, we have studied the measurement of voltage transfer curves which show the discharge characteristics in AC PDP. The change of the effective wall capacitance during a discharge is also studied. These depend on lateral spreading of charge distribution and the strength of the discharge. As a parameter of the frequency, we observed the effects of the frequency in voltage transfer curves and in effective wall capacitance changes. As frequency increases, minimum sustain voltage and firing voltage decrease. In upper region of gap voltage the chance of the effective wall capacitance is independent of frequency.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.706-709
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• 2003

We made an optimization effort on driving waveforms for the Quantized Memory Addressing (QMA) in selective write mode of operation. It was necessary to add long ramp type erase pulses after the total write pulse and the sustain period to obtain stable intermediate luminance discharges. Furthermore, fast rising ramp type total write as well as two step addressing scheme were adopted for better discharge stability.

• 한국정보디스플레이학회:학술대회논문집
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• 2002.08a
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• pp.211-214
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• 2002

We present gray scale implementation method based on QMA driving technique. We clarified the mechanism of wall charge quantization through discharge current measurement. We used three wall charge states to implement gray scale. The cells would be one of fully-ON, half-On, and OFF states. We built a five sub-fields 243 level gray scale with sustain pulse count of 2, 6, 18, 54, and 162.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.601-604
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• 2007

In this paper, we report the wall voltage transfer characteristic between sustain electrodes according to the address bias voltage in a 3-electrodes surface discharge type ac PDP by the VT close curve measurement technique. The result shows the change of wall voltage according to the gap voltage variation depends on the address bias voltage.

• Proceedings of the Korean Vacuum Society Conference
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• 2000.02a
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• pp.204-204
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• 2000

AC-PDP로부터 방출된 빛의 방전 현상을 이해하고자 시간-공간상으로 분해된 방전이미지를 유지방전시 진동수와 유지방전전압에 따라 조사하였다. 방전이미지는 방전전류가 최대인 지점에서 최대 밝기를 가지며 전류량이 많을수록 향상됨을 볼 수 있었다. 사용된 패널은 전극폭 260umm, 전극간격 100um, 격벽높이 120um, 기압은 400Torr로 Ne-Xe(4%) 가스를 사용하였다. 실험조건은 진동수 50KHz, 100KHz, 150KHz와 유지방전전압 170V, 180V, 190V, 200V에 따른 방전이미지의 변화된 형태를 고찰하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.9
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• pp.7-11
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• 2007

The objective of this study is to evaluate the characteristics of a newly proposed high-speed drive method for the gray scale display for high-resolution plasma display panels(PDP). In the experiment it was found that the characteristics of gray scale display are not closely affected by a priming period below 50[${\mu}s$], the width of the priming period, and that it can be driven stably from the brightest sub-field to the darkest sub-field even though a priming discharge is applied to the 1 TV-field only once. Moreover, from the experimental result, the gray scale pattern of 8-bit and 9 sub-fields was stably displayed in the experimental PDP with scan pulses having the pulse width of 0.7[${\mu}s$]. An address voltage margin of about 25[V] and a sustain voltage margin of about 10[V] was obtained.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.6
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• pp.1151-1156
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• 2009

Unstable sustain discharges can occur at the bottom cells of the panel at high temperature. To solve this problem, the wall charge variation during an address period was investigated. A test panel of 7.5 inch XGA level was used and one green cell was measured. In order to realize operating condition equal to that of the bottom cells of 50 inch panel, the addressing stress pulses are applied. It seems that the resultant wall charge loss during address period increased with increase of stress time, temperature, pressure and Xe %. Wall charge loss increases with potential difference between scan electrode and address electrode, therefore wall charge loss can be minimized by the increase of scan voltage during address period.

• Proceedings of the KIEE Conference
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• 2001.07c
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• pp.1582-1584
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• 2001

In ac plasma display(PDP), an image quality mainly depends on the contrast ratio. And the contrast ratio is affected by the driving condition and size of discharge cell. In this study, the electrical and optical characteristics during reset, address and sustain discharge were investigated as the height and width of barrier rib were varied in order to obtain the highest contrast ratio. As a result, the optimum rib height and width were 140${\mu}m$ and 600${\mu}m$, respectively.

• Journal of Information Display
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• v.3 no.2
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• pp.13-18
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• 2002

Numerical simulation is one of the most useful tools to study gas discharge phenomena that occur in alternating current plasma display panel (AC-PDP) cell. Most PDP cell simulations have been performed for two-dimensional cell, is cross-section along the address electrode. We developed a three-dimensional PDP simulator and applied it to a T-shaped electrode cell in order to show the effects of sustain electrode shape that cannot be included in two-dimensional simulation. The dependence of power consumption on electrode shape and area in the simulation showed the same trend as experiment.

• 한국정보디스플레이학회:학술대회논문집
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• 2000.01a
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• pp.27-28
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• 2000

We examined ($He_x-Ne_{l-x}$)-Xe gas discharge in an AC PDP cell by computer simulation to understand the gas mixing effects. The breakdown and sustain voltage were significantly lowered with the addition of Ne into He-Xe. The luminance and efficiency in ($He_x-Ne_{l-x}$)-Xe also improved when compared with the He-Xe or Ne-Xe gas mixture. The luminance is maximum around $30{\sim}40%$ He addition, while the efficiency shows peak values at 70% He. Two-dimensional numerical simulation was done to explain these results.