• 제목/요약/키워드: luminous efficiency

검색결과 385건 처리시간 0.026초

Floating전극 도입으로 인한 AC-PDP Fence 전극 구조의 효율 개선 연구 (A Study on the Improvement of the luminous Efficiency in AC-PDP Fence electrode structure with Floating electrode)

  • 석창우;심승보;황석원;이돈규;김동현;이해준;박정후
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 제39회 하계학술대회
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    • pp.1309-1310
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    • 2008
  • 최근 대형 FPD로 주목받고 있는 PDP는 높은 방전개시전압과 투명전극인 ITO를 사용함으로서 가격이 상승하는 문제점이 있다. 그래서 본 논문에서는 ITO전극 대신 금속(Ag) BUS전극을 사용해 저가격화를 이룰 수 있는 Fence전극구조에 Floating전극을 도입함으로서 방전개시전압을 낮추고 효율을 개선할 수 있는 새로운 Fence전극구조를 제안하였다. 실험은 reference와 제안된 구조로 구성되어 있는 4-inch AC PDP에 Test Panel을 직접 제작하여 firing voltage, discharge current, luminanace, luminous efficiency를 측정하여 비교하였다. 제안된 구조는 방전개시전압이 최대 20V감소하고 방전전류가 최대 17%감소하였고 효율면에서도 최대 13%의 상승을 보였다.

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플라스마 디스플레이 패널에서 명실 콘트라스트 개선 (Enhancement of the Bright Room Contrast Ratio in a Plasma Display Panel)

  • 문철희
    • 한국진공학회지
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    • 제19권1호
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    • pp.28-35
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    • 2010
  • 플라즈마 디스플레이 패널에서 명실콘트라스트(bright room contrast ratio: BRCR)를 개선하는 방향으로 새로운 전극구조를 설계하였다. 새로운 개념의 전극을 이용하여 블랙매트릭스 패턴의 영역을 넓힐 수 있었으며 이를 통하여 패널면의 반사휘도를 낮출 수 있었다. 제작한 플라즈마 디스플레이 패널에 대하여 방전전압, 방전효율, 휘도 등을 평가하였으며 명실콘트라스트가 크게 개선됨을 확인하였다.

A study on the electrode-structure for the high luminous efficient PDPs

  • Min, Byoung-Kuk;Yoo, Jun-Young;Kim, Jung-Hun;Choi, Kwang-Yeol;Yoo, Eun-Ho;Park, Myoung-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.579-582
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    • 2002
  • We developed three kinds of electrode-structures for high luminance and luminous efficiency. Also, we optimized the mixture gas. Three kinds of 7.5-inch experimental panels having a pixel pitch of 0.864mm were evaluated, and high efficiency of 1.6lm/W was obtained in the panel type2.

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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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Improvement of Luminous Efficiency in AC Plasma Display Panel with the Pulses Applied to the Address Electrode

  • Cho, Hyoung-Joon;Kim, Bhum-Joon;Lee, Jae-Hyun;Choi, Kyung-Cheol
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.61-64
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    • 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.

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FHD와 QFHD 해상도를 가지는 AC PDP의 방전특성 비교연구 (A Comparative Study on Discharge Characteristics of FHD and QFHD AC PDP)

  • 최용석;허준;김동현;이해준;이호준
    • 전기학회논문지
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    • 제60권1호
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    • pp.119-123
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    • 2011
  • We have investigated the luminous efficiency of various cell resolution and structure from 50" FHD to 50" QFHD Plasma Display. The suggested test panels have two different cell array types which are the delta and matrix cell array type. The results showed that, in the case of the suggested QFHDs, the firing and sustain voltage were increased and voltage margin was decreased. These results are caused by the reduced wall voltage and increased charged particle loss, at the side wall. The luminance of the suggested QFHDs was lower from 20% to 40% than that of the suggested FHDs and the power consumption was higher from 42% to 83% than that of the suggested FHDs. In conclusion, the maximum luminous efficiency of the suggested QFHD(D110) has reached about 38%, compared with suggested FHDs($\fallingdotseq$ 2.7 lm/W).

Characteristic of Facing Discharge Front plate Address Electrode Structure in AC PDP

  • Cho, Hyun-Min;Kim, Dong-Hwan;Song, In-Cheol;Kim, Yun-Gi;Ok, Jung-Woo;Kim, Dong-Hyun;Lee, Hae-June;Lee, Ho-Jun;Park, Chung-Hoo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.104-107
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    • 2009
  • In order to improve discharge characteristics in AC PDP, we suggest FDFA (Facing Discharge Front plate Address Electrode) structure. By adopting both long facing discharge electrodes and address electrodes in front plate, the FDFA structure make it possible to gain a high luminance, low power consumption, and a high luminous efficiency.

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Effect of Auxiliary Address Pulse on Face-to-face Sustain Electrode Structure in AC-PDP

  • Kim, Bo-Sung;Tae, Heung-Sik
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.605-608
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    • 2007
  • The discharge characteristics of the face-to-face sustain electrode structure employing auxiliary address pulse are investigated under a sustain driving frequency of 20 kHz and various auxiliary address pulse widths (500 ns, $1{\mu}s$, $2\;{\mu}s$) in the 6-in. test panel (42-in. Full HD grade) with a pressure of 450 Torr and a 4 % Xe-content. The luminance and the luminous efficiency at the auxiliary address pulse width of 500 ns are improved more than these of $1\;{\mu}s$ and $2\;{\mu}s$. At the auxiliary address pulse width of 500 ns, the luminous efficiency shows about 0.96 lm/W at the auxiliary pulse of 90 V and the sustain voltage of 260 V.

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An Electrical and Optical Characteristics of the Color ac Plasma Displays with a New Cell Structure

  • Lee, Woo-Geun;Lee, Jae-Young;Park, Jae-Moon;Park, Chung-Hoo
    • Journal of Information Display
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    • 제2권1호
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    • pp.5-9
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    • 2001
  • New types of ac plasma display panel (PDP) cells are designed and tested electro-optically. We proposed two types of sustaining electrode to improve the luminous efficiency. One is the meander electrode, which has longer discharge path length and smaller electrode area than conventional type. The other is the bridge-shaped electrode, which eliminates the transparent electrode near the barrier ribs. They show higher luminous efficiency and lower power consumption than conventional type.

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Electrical Conduction Mechanism in ITO/Alq3/Al Organic Light-emitting Diodes

  • Chung, Dong-Hoe;Lee, Joon-Ung
    • Transactions on Electrical and Electronic Materials
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    • 제5권1호
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    • pp.24-28
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    • 2004
  • We have used ITO/Alq$_3$/Al structure to study electrical conduction mechanism in organic light-emitting diodes. Current-voltage-luminance characteristics were measured at room temperature by varying the thickness of Alq$_3$ layer from 60 to 400mm. We were able to confirm that there are three different mechanisms depending on the applied voltage region; ohmic, space-charge-limited current, and trap-charge-limit-current mechanism. And the maximum luminous efficiency was obtained when the thickness of Alq$_3$ layer is 200nm.