• 한국조명전기설비학회:학술대회논문집
• /
• 한국조명전기설비학회 2007년도 춘계학술대회 논문집
• /
• pp.130-134
• /
• 2007

단일 구동회로를 사용하여 패널전체를 동시에 방전시킬 수 있는 새로운 priming 방전기술을 고안하였다. 그리고 이 기술을 사용하여 1080개의 수평주사선수를 가지는 full-HDTV PDP를 고휘도로 구동할 수 있는 새로운 고속 구동방식을 제안하였다. 이 priming 방전기술을 사용하면 구동방식에 상관없이 priming 기간을 sustain 기간에 중첩시키고 ramp 파형을 가지는 priming pulse를 인가하는 것이 가능하다. 실험결과로부터 sustain 방전이 없는 경우에만 priming 방전이 일어났다. 그리고 sustain 방전은 priming 펄스의 영향을 거의 받지 않는다는 것이 확인되었다. 새로운 PDP 구동기술로 $0.7{\mu}s$의 address 펄스폭을 가지는 고속 address를 실현하였다. 그리고 40V의 넓은 address 동작마진을 얻었다. 이 기술들은 상용의 driver IC를 사용할 수 있도록 설계되어있으므로 상용화 가능성도 높다.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
• /
• pp.13-17
• /
• 2006

We investigated the effect of sustain electrode gap variation with high Xe content in an ac Plasma Display Panel through two-dimensional numerical simulation to understand the inherent high luminous efficiency mechanism. For the low Xe content, the optimal sustain electrode gap turned out to be about 200 ${\mu}m$, but with higher Xe content, the VUV generation efficiency increased as the electrode gap increases beyond 200 ${\mu}m$. We found that it is due to higher electron heating efficiency in the cathode sheath under the condition of long electrode gap and high Xe content.

• 대한전기학회논문지:전기물성ㆍ응용부문C
• /
• 제51권11호
• /
• pp.541-545
• /
• 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
• /
• 한국정보디스플레이학회 2002년도 International Meeting on Information Display
• /
• pp.61-64
• /
• 2002

The discharge characteristics of AC plasma display were investigated as a function of the voltage and the frequency of the pulses applied to the address electrode during sustain period. The maximum sustain voltage of display cell decreased with increasing the frequency of the pulses applied to the address electrode during sustain period. Applying the pulses to the address electrode resulted in improvement of luminance and luminous efficiency at the same time.

• KIEE International Transactions on Electrophysics and Applications
• /
• 제2C권6호
• /
• pp.292-296
• /
• 2002

A new sustain driving method for the AC PDP is presented. In this driving method, the voltage source is connected to a storage capacitor, this storage capacitor charges an intermediate capacitor through LC resonance, and the panel is charged from the intermediate capacitor indirectly. In this way, the current flowing into the AC PDP when the sustain discharge occurs is reduced because the current is indirectly supplied from a capacitor, a limited source of charge. Thus, the input power to the output luminance efficiency is improved. Since the voltage supplied to the storage capacitor is doubled through LC resonance, this method call drive an AC PDP with a voltage source of about half of the voltage necessary in the conventional driving methods. The experiments showed that this charge-controlled driving method could drive ail AC PDP with a voltage source of as low as 107V. Using a panel of the conventional structure, luminous efficiency of 1.28 lm/W was achieved.

• 전자공학회논문지
• /
• 제51권1호
• /
• pp.179-184
• /
• 2014

교류형 플라즈마 디스플레이에서의 Vt 폐곡선 측정에 기초하여 개방형 유전체 구조에서 방전 전압과 내부 벽전압 등의 방전 특성이 종래의 구조와 비교되어 조사되었다. 일반적인 교류형 플라즈마 디스플레이의 구조에서 상판은 유리, 전극, 유전체 등으로 이루어져 있는데, 개방형 유전체 구조는 상판 전극사이에 있는 유전체를 제거하여 상판에 있는 유지 전극간의 방전이 더욱 쉽게 발생하도록 하는 구조이다. 개방형 유전체 구조는 종래의 구조와 다르기 때문에 종래의 구동파형으로 구동시에 여러 가지 문제가 발생한다. 특히 상판의 두 전극인 주사와 유지전극 간 방전 개시전압이 달라지기 때문에 종래의 기입 파형을 포함한 초기화 파형도 수정되어야 한다. 본 연구에서는 종래와 개방형 유전체 구조에서 3 전극의 방전개시전압을 비교하기 위하여 Vt 폐곡선을 측정하였고 분석에 기초하여 개방형 유전체 구조에 적합하도록 구동파형이 수정되었다.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
• /
• pp.1555-1558
• /
• 2008

Various approaches were undertaken by major PDP makers in order to improve the luminous efficacy of the plasma discharge cells. There have been many reports that state that using a high Xe content PDP is one of the most promising key technologies available to improve the luminous efficacy. In the case of the higher Xe content panel, the higher address and sustain voltage were needed to drive the panel under the same reset condition. In this study, a variety of Xe content panels were investigated in order to examine wall voltage transfer behaviors. The transferred wall voltage status after addressing discharge at the same driving condition was analyzed by comparing Vt close curve of high and low Xe content panels. Through this analysis of Vt close curve difference, the driving waveform of a high Xe panel was quantitatively adjusted Under the same address voltage condition, results showed that the amount of the transferred wall voltage and Vt close curve after addressing discharge was matched for the first sustain discharge. Taking these results into consideration, we conclude that the driving waveform for different Xe content panels could be designed for the desired addressing discharge condition and the wall voltage state of the cell could be quantitatively controlled and measured through these approaches.

• 한국안전학회지
• /
• 제23권4호
• /
• pp.42-46
• /
• 2008

Ionizers are essential in various areas of manufacturing industries to protect electrostatic hazards and to reduce inferior products. For ion sources used in the charge neutralizers, there are corona discharge, soft X-ray, ultraviolet and glow discharge. Glow discharge has lots of attractive properties, such as lower discharge sustaining voltage, no generation of ozone, and so on. In this paper, we did an experimental study to trace the mechanism and stabilization of atmospheric pressure glow discharge using the several size and shape of electrodes. As an experimental result, to sustain conditions of atmospheric pressure glow discharge is that discharge voltage is 360V, discharge current is 12mA, apply frequency is 1kHz between electrodes when positive electrode is molybdenum(Mo) and negative electrode is copper(Cu). We confirmed that the mechanism and stabilization of atmospheric glow discharge is deeply concerned with the shape and material of electrode for discharge. Especially, glow discharge in atmospheric pressure was well generated and sustained according with the physical properties used electrode materials, example melting point, thermal conductivity, and etc.

• 한국진공학회지
• /
• 제16권5호
• /
• pp.383-387
• /
• 2007

본 논문에서는 KSTAR 토카막 진공용기의 세정을 위한 방전세정 시스템의 설계에 대해 기술하였다. 먼저 방전세정효율에 영향을 주는 매개변수들에 대해 논의하였으며. 실제 설계에서 직류방전 보다 낮은 압력에서 방전이 시작되고 유지되며 따라서 세정효율이 높은 RG 방전(RF-assisted DC glow discharge) 방법을 채택하였다. 그리고 방전세정의 균일성을 위해 두 개의 방전 전극을 진공용기의 진단포트(A,I-port)에 설치하였다. 설계된 방전세정 시스템은 KSTAR 진공용기 내벽 세정뿐만 아니라 제1벽의 연료재순환(fuel recycling)이나 보론화 처리(boronization)등의 연구에도 응용될 수 있다.

• 전기학회논문지
• /
• 제58권4호
• /
• pp.777-782
• /
• 2009

In this paper, the effect of the secondary electron emission coefficient of Xe ion on glow discharge was examined by ID numerical simulation. The simulation was performed for two distinct structures, short and long gaps. The features of the glow discharges in the both structures, firing and sustain voltages, luminance, and efficiency, were analyzed at various secondary electron emission coefficient of Xe ion.