• 제목/요약/키워드: High luminance

검색결과 550건 처리시간 0.028초

Xe 플라즈마 평판형 광원의 전극 구조에 따른 전기.자기적 특성 (Electrical and Electromagnetic Characteristics of Xe Plasma Flat Lamp by Electrode Structure)

  • 최용성;문종대;이경섭;이상헌
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 영호남 합동 학술대회 및 춘계학술대회 논문집 센서 박막 기술교육
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    • pp.82-85
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    • 2006
  • As a display becomes large recently, Acquisition of high luminance and Luminance uniformity is becoming difficult in the existing CCFL or EEFL backlight system. So, study for a performance enhancement has enforced. but lamp development of flat type is asked for high luminance and a luminance uniformity security in of LCD and area anger trend ultimately. In this paper, we changed a tip shape of an electrode for production by the most suitable LCD backlight surface light source, and confirmed discharge characteristic along discharge gas pressure and voltage, and confirmed electric field distribution and discharge energy characteristic through a Maxwell 2D simulation. Therefore the discharge firing voltage characteristic showed a low characteristic than a rectangular type and round type in case of electrode which used tip of a triangle type, and displayed a discharge electric current as a same voltage was low.

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High Luminance 3D Built-In PDP Panel with Fast-Decaying Phosphor

  • Kim, Young-Kwan;Yoo, Young-Gil;Lee, Soon-Rewl;Kim, Min-Kyu;Kim, Jeong-Hee;Chung, Kyeong-Woon;Choi, Ick-Kyu;Song, Jay-Hyok;Song, Yu-Mi;Kim, Yoon-Chang;Heo, Eun-Gi;Zang, Dong-Sik;Chung, Chong-In
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.127-130
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    • 2009
  • High luminance 3D built-in PDP panel was developed with newly adopted fast-decaying phosphor. Luminance of 3D PDP was increased about 40% by reducing the particle size of RGB phosphors and using $Y_3(Al,Ga)_5O_{12}:Ce^{3+}$ phosphor. Decay time of developed 3D PDP was 5.2ms/4.9ms for Red/Green color.

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광원(光源)의 색온도(色溫度)·연색성(演色性) 및 휘도(輝度)레벨이 시지각(視知覺) 변화에 미치는 영향 (The Effect of Electric Lamp on Visual Perception)

  • 윤인;정창원
    • 한국산업융합학회 논문집
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    • 제1권2호
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    • pp.55-64
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    • 1998
  • This paper deals with the effects of fluorescent lamp description and luminance level on the occupant's brightness perception and other sensation in building interiors. The following experiments were conducted: the subjects compared on room lit by daylight fluorescent lamps with the other room lit by the different lamp description at equal luminance at equal luminance level. The degree of that effect decreased with a rise in luminace level. The brightness perception had high correlation with the visual clarity and no correlation with favorite sensation.

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개량된 Fence전극 구조에 의한 AC PDP의 휘도 및 효율 개선에 관한 연구 (A Study on the Luminance and Luminous Efficiency Improvement of AC PDP by an Improved Fence Structure Electrode)

  • 허민령;이성현;류중희;신중홍;박정후
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제51권11호
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    • pp.531-535
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    • 2002
  • Nowadays, the most serious problems in ac PDP are high cost and complex manufacturing processes. To solve these problems, fence electrode structure, which eliminates the need for expensive transparent electrodes, has been newly suggested. But it has a lower luminance and luminous efficiency than the conventional stripe type electrode structure. In this study, an improved fence electrode structure has been suggested in order to improve luminance and luminous efficiency. The experimental results show that the luminous efficiency of suggested structure is 25% higher than that of conventional fence electrodes.

Dual-Slope Ramp Reset Waveform to Improve Dark Room Contrast Ratio in AC PDPs

  • Lim, Jae-Kwnag;Cho, Byung-Gwon;Tae, Heung-Sik
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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    • pp.639-642
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    • 2005
  • A new dual-slope ramp (DSR) reset waveform is proposed to improve the dark room contrast ratio in AC-PDPs. The proposed reset waveform has two different voltage slopes during a ramp-up period. The first voltage slope is lower than the conventional ramp voltage slope, causing a reduction in the background luminance, whereas the second voltage slope is higher than the conventional ramp voltage slope, causing an increase in the background luminance. Thus, a bias voltage is also applied during the second voltage-slope period to adjust the background luminance and address discharge characteristics. As a result, the proposed dual-slope reset waveform can lower the background luminance, thereby improving the high dark room contrast ratio of an AC-PDP without reducing the address voltage margin

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The effect of Gas Mixture Ratio on Discharge Characteristics of an AC PDP Cell

  • Lee, Hae-June;Lee, D.K.;Choi, J.H.;Cho, Y.S.;Park, H.D.;Lee, H.J.;Park, C.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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    • pp.171-174
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    • 2005
  • Experimental measurements are reported and compared with the results of a two-dimensional fluid simulation for the investigation of the discharge characteristics regarding the change of the mixture ratio of Ne-Xe-He noble gases. The increase of Xe contents results in the increases of luminance and luminous efficiency while it also results in the increase of the breakdown voltage and the discharge time lag. The addition of He gas increases the brightness and the luminance efficiency. When Xe partial pressure is low, the luminance efficiency increases with the amount of He at the same total pressure. When Xe partial pressure is high, however, the luminance efficiency has a maximum value when the partial pressure of He is about 10% of the total pressure for a standard AC PDP cell with Xe fraction of $10{\sim}30%$.

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AC PDP의 전기광학적 특성에 미치는 동작 Gas Xex+Ne1-x의 영향 (The Effect of Working Gas Xex+Ne1-x on the Electro-optical Characteristics of AC PDP)

  • 박정후;유수복;이돈규;이해준;이호준;김재성
    • 전기학회논문지
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    • 제56권1호
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    • pp.142-146
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    • 2007
  • Nowadays, itis inevitable trend to use high Xe gas contents for increase luminous efficiency and luminance in plasma display panel. However, the increase of Xe gas contents causes the driving voltage, although the brightness is increase. In this paper, we study the characteristics of electro optical according to Xe gas contents and gas pressure. Electro-optical characteristics were investigated by the discharge voltage, luminance and luminous efficacy measurements, respectively. With some increasing Xe gas contents and pressure, the electro-optical properties increased. However, the characteristics of electro-optical begin to be saturated, when too high increased Xe gas contents and pressure.

AC PDP의 효율 향상을 위한 비대칭형 금속전극구조 (Improvement of Luminous Efficacy in AC PDP with Asymmetric Metal Electrode Structure)

  • 동은주;옥정우;윤초롬;이해준;이호준;박정후
    • 전기학회논문지
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    • 제57권4호
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    • pp.660-667
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    • 2008
  • To improve the luminous efficacy of PDPs, an AC PDP with new metal electrode structure is suggested. Operating voltage margin, power consumption, luminance, luminous efficacy, addressing jitter and ICCD image of test panel with proposed structure are measured, to compared with performances of the conventional ITO structure and proposed structures. To enhance luminous efficacy, we designed new structure which have asymmetric metal electrode structure. The experimental results show that the suggested structure shows luminance to maximum 89% and luminous efficacy to maximum 107% compared with conventional ITO standard structure. In addition, proposed structures with asymmetric electrode show low power consumption by $2{\sim}3%$, high luminance by $5{\sim}7%$, and high luminous efficacy by $2{\sim}3%$ compared with proposed symmetric electrode structures.

Low voltage driving red phosphorescent organic light-emitting devices

  • Kim, Tae-Yong;Suh, Won-Gyu;Moon, Dae-Gyu
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.461-464
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    • 2008
  • We have developed low voltage driving red phosphorescent organic light-emitting devices using a new electron transport layer. $Ir(piq)_3$ and CBP were used as a phosphorescent dopant and an emission host, respectively. The device exhibits a luminance of $1000\;cd/m^2$ at a voltage of 2.8 V. This high luminance at low voltage results from a high electron conduction behavior of the new electron transport layer.

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Full Size PDP Development with SDR Structure for Improved Luminance and Low Power Consumption

  • Yoo, Min-Sun;Yoon, Cha-Keun;Lee, Kwang-Sik;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.53-56
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    • 2002
  • Samsung's newly developed high luminance efficiency 42" VGA plasma display panel is introduced. A new discharge cell structure, SDR (Segmented electrode in Delta color arrayed Rectangular subpixel) has been applied to a full size panel for the first time. In this paper, we describe how this new discharge cell structure for high efficiency is integrated to an energy saving plasma display with better picture quality.

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