• Title/Summary/Keyword: image sticking

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Comparison of Temporal Dark Image Sticking Produced by Face-to-Face and Coplanar Sustain Electrode Structures

  • Kim, Jae-Hyun;Park, Choon-Sang;Kim, Bo-Sung;Park, Ki-Hyung;Tae, Heung-Sik
    • Journal of Information Display
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    • v.8 no.3
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    • pp.29-33
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    • 2007
  • The temporal dark image sticking phenomena are examined and compared for the two different electrode structures such as the face-to-face and coplanar sustain electrode structure. To compare the temporal dark image sticking phenomena for both structures, the differences in the infrared emission profile, luminance, and perceived luminance of the image sticking cells and the non image sticking cells were measured. It is observed that the temporal dark image sticking is mitigated for the face-to-face structure. The mitigation of the temporal dark image sticking for the face-to-face structure is due to the slight increase in the panel temperature induced by the ITO-less electrode structure.

Prohibition of Boundary Image Sticking in AC Plasma Display Panel Using Vacuum Sealing Method

  • Tae, Heung-Sik;Park, Choon-Sang;Kwon, Young-Kuk;Heo, Eun-Gi;Lee, Byung-Hak
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.1688-1691
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    • 2007
  • This paper shows that the boundary image sticking can be prohibited completely by using the vacuum sealing process, which means that the residual impurities such as nitrogen or oxygen can be a critical factor inducing the boundary image sticking. The production of boundary image sticking was checked in the test panel fabricated by the $N_2$ or $O_2$ flow during the vacuum sealing process. As a result, the boundary image sticking did not appear in the case of $N_2flow$, whereas the boundary image sticking was observed in the case of $O_2$ flow even though the test panel was fabricated by the vacuum sealing process.

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Experimental Observation of Temporal Dark Image Sticking in AC PDP with Face-to-Face Sustain Electrode Structure

  • Kim, Jae-Hyun;Park, Choon-Sang;Kim, Bo-Sung;Park, Ki-Hyung;Tae, Heung-Sik
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.617-620
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    • 2007
  • The temporal dark image sticking phenomena for both the face-to-face and coplanar sustain electrode structures were compared. For both structures, the temporal dark image sticking phenomena were examined by measuring the difference in the IR emission, display luminance, perceived luminance, and temperature between the image sticking and the no image sticking cells. For the face-to-face structure, the 10-min sustain discharge causes a small increment of the panel temperature thanks to the ITO-less electrode structure, thereby resulting in mitigating the temporal dark image sticking phenomenon.

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Reduction of the Temporal Bright-Image Sticking in AC-PDP Modules Using the Vacuum Sealing Method

  • Park, Choon-Sang;Cho, Byung-Gwon;Tae, Heung-Sik
    • Journal of Information Display
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    • v.9 no.4
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    • pp.39-44
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    • 2008
  • This paper investigates the effects of the existing sealing methods, such as the conventional atmospheric-pressure sealing method and vacuum sealing, on temporal bright-image sticking. To produce a residual image caused by temporal brightimage sticking, the entire region of a 42-in panel with an Xe-(11%)-He(35%) gas mixture was abruptly changed to a full-white background image after displaying a square-type image at peak luminance for about 60s. From the monitoring of the difference in the display luminance, infrared emission, color temperature, and disappearing time between the cells with and without temporal bright-image sticking, it was observed that the vacuum sealing method contributes to the reduction of temporal bright-image sticking.

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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    • 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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Novel Measurement method for Image Sticking based on Human Vision System

  • Park, Gi-Chang;Lee, Jong-Seo;Souk, Jun-Hyung;Yi, Jun-Sin
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.1478-1481
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    • 2007
  • This paper introduced a measurement method for image sticking based on human vision perception. Existing image sticking quantification method is mostly different from visible level by human perception. It takes a long time to measure image sticking which is degraded by time due to using a spot photometer, therefore many test samples could not be evaluated in a given short period of time in mass production line. However, the new measurement method in this paper is possible to evaluate a large quantity of samples in fast and high correlation with human perceptual level of image sticking.

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Reduction of Temporal Image Sticking in AC Plasma Display Panels through the Use of High He Contents

  • Park, Choon-Sang;Kim, Sun-Ho;Kim, Jae-Hyun;Tae, Heung-Sik
    • Journal of Information Display
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    • v.10 no.4
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    • pp.195-201
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    • 2009
  • The temporal dark- and bright-image sticking phenomena were examined relative to the He contents under 11% Xe content in the 50-in HD and FHD AC-PDPs with a ternary gas mixture (Xe-He-Ne). To compare the temporal dark- and bright-image sticking phenomena under various He contents, the differences in the disappearing time, display luminance, perceived luminance, infrared emission, color coordinate, color temperature, and discharge current before and after discharge were measured under 0, 35, 50, and 70% He contents. It was found that temporal dark- and bright-image sticking were reduced in proportion to the increase in He %. Thus, a high He content contributes to the reduction of temporal dark- and bright-image sticking.

Image Sticking Evaluation Methods for OLED TV Applications

  • Lee, Hun-Jung;Choi, Dong-Wook;Lee, Eun-Jung;Kim, Su-Young;Shin, Mi-Ok;Yang, Sun-A;Lee, Seung-Bae;Lee, Han-Yong;Berkeley, Brian H.
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.1077-1080
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    • 2009
  • In this paper, we propose a new method for measuring image sticking of an OLED display using a human visual test. We determined that the perceptual image sticking threshold is 2% of luminance difference at 200 nits and 1% at 100 nits, respectively. Color shift must also be considered when evaluating image sticking, as a ${\Delta}$(u', v') shift of just over 0.002 can be recognized regardless of background brightness. Perception of image sticking is affected by the background level, test pattern, and ambient illumination conditions. The evaluation standard must consider both luminance variation and color shift simultaneously.

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Role of Redeposition of Sputtered Mg Particles in Image Sticking

  • Nikishin, Nikolay;Manakhov, Anton;Kim, Yoon-Kyung;Hur, Min;Heo, Eun-Gi
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.381-383
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    • 2008
  • One of important factors responsible for image sticking in AC PDP is a sputtering of MgO layer under ionic bombardment. Sputtered Mg particles can migrate to the neighbor cells, where the migration makes a change of discharge condition. It leads to the local non-uniformity of a luminescence in the panel, resulting in the image sticking.

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A study on the temporal bright image sticking problem in AC PDP

  • Ha, Chang-Hoon;Jeong, Dong-Chul;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.113-116
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    • 2004
  • In this study, the causes of temporal bright image sticking problem in an AC PDP were investigated. The temporal bright image sticking problem in an ac PDP is observed to be a relatively lower luminance following several minutes on-time at a high gray level compared to that of the ordinary turned-on image area. We focused on the detailed causes of image sticking, which are directly related with the visible emission such as the changes in the characteristics of phosphor, MgO surface and gas dynamics. The experimental results show that the thermal quenching of phosphor and temperature-dependent discharge characteristics change cause the image sticking problem.

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