• 제목/요약/키워드: PDP

검색결과 1,676건 처리시간 0.032초

Influence of Image Sticking on Electra-Optical Characteristics in Alternating-Current Plasma Display Panels

  • Choi, J.H.;Jung, Y.;Jung, K.B.;Kim, S.B.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.760-763
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    • 2003
  • We have investigated the electro-optical characteristics of image sticking in AC PDP. Although Image sticking is one of major factors to determine display quality in AC PDP, so far, it has not being reported why it is occurred and how we can prevent it. In this experiment, we have analyzed the effect of MgO protective layer and phosphor on the image sticking and we have measured the difference of firing voltage, brightness and discharge current between sticking image and normal image in AC PDP. As a result, Phosphor degradation is a more major factor than MgO protective layer and the firing voltage of gas discharge in sticking image is higher than that of normal discharge.

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Electro-Optical characteristics with dielectric thickness of AC-PDP

  • Jung, K.B.;Choi, J.H.;Kim, S.B.;Jung, Y.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.768-770
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    • 2003
  • In AC PDP, since charges generated by gas discharge are accumulated on the dielectric. The dielectric is a major factor to determine cell capacitance and its memory effect is a play an important role in PDP driving. In this experiment, we have investigated the electro-optical characteristics with dielectric thickness and we have analyzed wall charge and wall voltage by Q-V energy diagram. The dielectric thickness was varied from 20 um to 50 um. As results, according to the dielectric thickness increase,cell capacitance and power consumption is reduced.

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Control of Blue Phosphor Layer Cross-section and Its Improved Discharge Characteristics

  • Jeon, Byung-Soo;Choi, Seo-Young;Moon, Cheol-Hee;Heo, Eun-Gi;Lee, Kwang-Sik;Whang, Ki-Woong;Bae, Chul-Han
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.583-585
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    • 2002
  • The effects of phosphor properties such as the granular sizes and shape on the crosssectional shape of phosphor layer and plasma discharge characteristics for improving the luminance and luminous efficiency in ac PDP have been investigated. As the granular size decreases, the thickness of vertical side of barrier rib in blue cell decreases, and wheras the thickness of bottom side increases due to increased dispersibility. In addition, the phosphor with round granular shape showing good dispersibility shows better voltage margin and higher luminous efficiency due to their improved discharge volume and packing density.

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3-D Simulation of T-Shaped Electrode and Comparison of Results with Experiments

  • Shin, Yeong-Kyo;Hwang, Tae-Su;Kang, Seok-Dong;Park, Hun-Gun;Ryu, Jae-Hwa;Kim, Hyun-Chul;Shin, Seong-Won;Lee, Jae-Koo
    • Journal of Information Display
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    • 제3권2호
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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.

3차원 광 측정을 통한 PDP의 전극 구조별 방전 분석 (The Analysis for PDP Discharge as a Parameter of Electrode Structure by 3-Dimensional Light Emission Measurement)

  • 우석균;최훈영;이석현
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제50권4호
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    • pp.190-196
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    • 2001
  • We measured 3-dimensional images of the light emitted from plasma display panel(PDP) by using newly proposed scanned point detecting method(SPDM). The SPDM has the point detector with pinhole. The light emitted from PDP cell at the in-focus position can pass through the pinhole and be collected by detector. On the contrary, the light emitted from PDP cell at the out-of-focus positions is focused on the front of or the behind of the pinhole. We could analyze the characteristic of 3-dimensional light emission distribution by SPDM. From 3-dimensional measurement of 828[nm], the efficient design of PDP cell, the importance of opening ration, and the relations between BUS electrode position and discharge intensity are obtained. Also, the relationship between discharge characteristics and sustain electrode structures in AC-PDP are studied by measuring luminance, current, and discharge voltage.

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PDP의 연구 개발 현황 및 시장 동향

  • 박명호
    • E2M - 전기 전자와 첨단 소재
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    • 제13권8호
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    • pp.1-6
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    • 2000
  • 21세기의 시작과 함께 디지털 방송이 본격적으로 추진됨에 따라 가장 적합한 Disply로써 부각되고 있는 PDP에 대하여, 개발되고 있는 현재의 과제 및 신기술을 소개하고, PDP의 시장 및 동향을 알아봄으로써 향후 PDP기술 개발 방향을 예측해보고자한다.

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PDP 파워 모듈을 위한 브리지 없는 고효율 ZVZCS 역률개선회로 (Bridgeless High Efficiency ZVZCS Power Factor Correction Circuit for PDP Power Module)

  • 류병규;문건우;조규민
    • 전력전자학회논문지
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    • 제10권3호
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    • pp.226-232
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    • 2005
  • 최근 많은 나라들이 상용전원의 왜곡을 방지하기 위해 AC 라인에 직접 연결하는 제품에 IEC 61000-3-2 나 IEEE 59 와 같은 고조파 규제를 가하고 있다. 따라서 최근 차세대 디스플레이 소자로 각광을 받고 있는 PDP(플라즈마 디스플레이 패널) 역시 이런 규제치를 만족하기 위해 역률개선회로를 부착하고 있다. 기존의 PDP 파워 모듈에서는 일반적으로 잘 알려진 부스트 컨버터를 이용해 역률개선회로를 구성하여 사용하였다. 그러나 PDP 자체의 열과 브리지 다이오드의 과도한 발열 때문에 시스템의 안전성을 보장할 수가 없었다. 본 논문에서는 PDP 파워 모듈용 역률개선회로로 브리지 없는 부스트 컨버터를 이용함으로써 효율, 소자 수, 발열상태 등 여러 가지 측면에서 기존회로와 비교 분석을 하고 그것의 제품 적용 가능성을 살펴보고자 한다.