• 제목/요약/키워드: Xe efficiency

검색결과 97건 처리시간 0.032초

Effect of auxiliary electrode on the discharge characteristics in AC PDP with long sustain-gap

  • Park, Sang-Dae;Lee, Seung-Hun;Shin, Nam-Hoon;Lee, Kyo-Sung;Park, Sung-Yun;Kim, Sang-Ho;Shin, Bhum-Jae;Choi, Kyung-Cheol
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.109-112
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    • 2004
  • The effect of auxiliary electrode on the discharge characteristics in AC PDP with long sustain-gap was investigated. The auxiliary electrode was placed between scan and common electrode. When the pulse was applied to the auxiliary electrode during sustain period, the luminance of Ne + 13%Xe gas-mixture discharge increased and the discharge current decreased. The auxiliary pulse plays a role of improving electron excitation efficiency. When the auxiliary pulse was applied during address period, the address discharge time lag of Ne + 13%Xe gas-mixture could be reduced remarkably.

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Spatiotemporal Behavior of the Excited Xe Atom Density in the $1s_5$ Metastable State According to the Hoof-type Electrode Structure in an Alternating-current Plasma Display Pane

  • Kim, Yong-Hee;Hong, Young-June;Choi, Joon-Ho;Cho, Byeong-Seong;Uhm, Han-Sub;Choi, Eun-Ha
    • Journal of Information Display
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    • 제11권4호
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    • pp.149-153
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    • 2010
  • To improve the luminescence characteristics of high-efficiency alternating-current plasma display panels (AC-PDPs), we developed a new hoof-type electrode structure, and we studied the spatiotemporal behavior of the density of the excited Xenon atom in the $1s_5$ metastable state via laser absorption spectroscopy. Using this structure, the maximum density of the excited Xenon atom per cell was improved by 2.4 times that when the conventional electrode structure was used.

평판형 광원에서 제논(Xe) 플라즈마의 전기적 광학적 특성 연구 (The electrical and optical properties of Xe plasma in flat lamp)

  • 백광현;양종경;이종찬;최용성;박대희
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 춘계학술대회 논문집
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    • pp.60-64
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    • 2005
  • Discharge of the flat lamp lighting source research are requested very much. For improving brightness, life time, efficiency of flat lamp, plasma diagnosis of the flat lamp lighting source to understand property of lighting source is very important, distance of discharge electrode is 5.5mm and width is 16.5mm, we measured electron temperature and electron density measured with single langmuir probe in flat lamp, we tested the discharge from 100 Torr to 300 Torr pressure, the Pulse is rectangular pulse with frequency 20kHz and Duty ratio 20%. Resultly, electron temperature decreases and electron density increase as increase the gas pressure and electron temperature decreases and electron density increase as increase the voltage.

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단일탐침법을 사용한 평판형 광원의 제논 (Xe) 플라즈마 특성 연구 (Xe Plasma Property with Flat Lamp by Langmuir Probe)

  • 백광현;이종찬;황명근;최용성;박대희
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제55권1호
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    • pp.50-54
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    • 2006
  • The study on discharge of the flat lamp lighting source has been requested increasingly. To improve the brightness, life time and efficiency of flat lamp, the plasma diagnosis of flat lamp lighting source is very important. When a distance of discharge electrode is 5.5mm and width is 16.5mm, we measured electron temperature and electron density with single Langmuir probe in flat lamp. Pressure conditions to test the plasma discharge from 100 Torr to 300 Torr. The power supply was PDS-4000 with frequency 20kHz and duty ratio $20\%.$ Form these experimental results, electron temperature was decreased according to increase the gas pressure and the voltage while electron density was increased.

제논(Xe) 가스를 사용한 평판형 광원에서의 전기 및 광학적 특성 연구 (Electrical and Optical properties of Xe gas in flat lighting source)

  • 백광현;양종경;이종찬;최용성;박대희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 C
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    • pp.2190-2192
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    • 2005
  • Discharge of the flat lamp lighting source research are requested very much. For improving brightness, life time, efficiency of flat lamp, plasma diagnosis of the flat lamp lighting source to understand property of lighting source is very important. distance of discharge electrode is 5.5mm and width is 16.5mm, we measured electron temperature and electron density measured with single langmuir probe in flat lamp. we tested the discharge from 100 Torr to 300 Torr pressure. the Pulse is rectangular pulse with frequency 20kHz and Duty ratio 20%. Resultly, electron temperature decreases and electron density increase as increase the gas pressure and electron temperature decreases and electron density increase as increase the voltage.

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정전탐침법을 사용한 평판형 광원의 제논(Xe)플라즈마 특성 연구 (Xe Plasma property with flat lamp by Langmuir probe)

  • 백광현;양종경;이종찬;최용성;박대희
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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    • pp.572-573
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    • 2005
  • Discharge of the flat lamp lighting source research are requested very much. For improving brightness. life time. efficiency of flat lamp and plasma diagnosis of the flat lamp lighting source to understand property of lighting source is very important. When a distance of discharge electrode is 5.5mm and width is 16.5mm. we measured electron temperature and electron density measured with single Langmuir probe in flat lamp. We tested the discharge from 100 Torr to 300 Torr pressure. The pulse type was rectangular with frequency 20kHz and duty ratio was 20%. In result. electron temperature decreases and electron density increased as increase the gas pressure and electron temperature decreases and electron density increase as increase the voltage.

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교류형 플라즈마 평판 표시장치(AC-PDP)에서 ITO 전극 구조에 따른 Xe 여기종의 시공간 밀도 분포 연구 (Measurement of Spatiotemporal Distribution for the Density of Excited Xe Atoms in the 1s5 in Accordance with Various ITO-shapes in Ac-PDP)

  • 조석호;홍영준;손창길;한용규;정용환;권기청;홍병희;조광섭;최은하
    • 한국진공학회지
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    • 제18권1호
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    • pp.54-59
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    • 2009
  • 3전극 면방전형 AC-PDP에서 발광효율을 높이기 위한 방법으로 새로운 구조의 ITO전극을 제안하였다. 기존에 사용하고 있는 사각형(square), T 형태의 ITO 전극구조와 새롭게 설계한 물고기뼈 형태(fish-boned type) ITO 전극 구조의 시험패널을 제작하였다. 레이저 흡수 분광법(Laser absorption spectroscopy)을 이용하여 각 ITO 전극 구조에 따라 Xe 여기종의 밀도분포를 측정하고, 고속 ICCD(Image Intensified Charge-Coupled Diode) 카메라를 이용하여 각각의 전극에 따른 $750\;nm\;{\sim}\;900\;nm$ 파장의 방전모습을 확인하였다. 시험패널 상판의 x, f 전극에 220V의 사각펄스(square pulse)를 교대로 인가하여 방전시켰다. 사각형, T 그리고 물고기뼈 형태의 ITO 전극 구조에서 $X_e$ 여기종 밀도는 각각 $2.06{\times}10^{13}\;cm^{-3}$, $2.66{\times}10^{-3}\;cm^{-3}$$3.01{\times}10^{13}\;cm^{-3}$으로 물고기뼈 형태에서 가장 높게 측정되었다.

High luminous efficiency Mercury-free flat light source for LCD BLU

  • Lee, Ju-Kwang;Oh, Byung-Joo;Jung, Jae-Chul;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1161-1164
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    • 2005
  • A Mercury-free, flat light source which shows high luminance and luminous efficiency simultaneously has been developed. An electrodeless, dielectric barrier discharge is used to generate the plasma using Ne-Xe mixture gas of relatively low gas pressure of a few tens torr in a 4.1 inch diagonal size of flat panel. The basic properties of the long gap glow discharge and its accompanying instabilities, which prevents us from having high luminous efficiency discharge have been analyzed. A new structure and optimized driving methods have been used to generate a glow discharge which shows a wide voltage margin of a few hundred volts. The luminous efficiency and luminance could be 110 lm/W at $1300\;cd/m^2$ and 50 lm/W at $5500\;cd/m^2$.

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Spatiotemporal behavior of excited Xe atoms density in Counter discharged type AC-PDP

  • Hong, Young-June;Oh, Phil-Yong;Jeong, Se-Hoon;Hong, Jong-Hwa;Kim, Jung-Hyun;Gyu, Yong;Cho, Seok-Ho;Hong, Sung-Hee;Hong, Byoung-Hee;Choi, Eun-Ha
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.574-577
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    • 2007
  • We have measured the excited Xe atoms density in the $1s_5$ metastable states by laser absorption spectroscopy in counter discharged type AC-PDP. This experiment has shown the characteristic of the excited Xe atoms density which is relation to the visible light efficiency of PDP. The density of counter discharged AC-PDP have measured to be $9.47\;{\times}\;10^{13}\;cm{-3}$. The result has been shown to higher value than $1.45\;{\times}\;10^{13}\;cm^{-3}$ of conventional AC-PDP.

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플라즈마 진단용 소형 루비레이저의 제작과 동작특성에 관한 연구 (Fabrication of Compact Ruby Laser and its Operation Characteristics)

  • 진윤식;김희제
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1995년도 하계학술대회 논문집 C
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    • pp.1271-1274
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    • 1995
  • In this paper, design feature and operation characteristics of compact Ruby laser for plasma diagonostics are described. A linear Xe flashlamp and a single elliptical cavity are adopted as optical pumping system. With charging energy of 484J, the maximum output energy of 170mJ, laser pulse width $110{\mu}s$, and slope efficiency 0.09% were obtained. If Q-switch system is added to this laser, we suppose this laser will be quite enough for diagonizing plasma.

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