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The temperature-dependent characteristics of temporal image sticking, especially temporal dark boundary image sticking, are investigated by observing the infrared (IR) emission characteristics relative to the panel-temperature rise during the reset period in a 42-in plasma television. A panel-temperature rise is induced in adjacent cells by the discharge cells (i.e., image-sticking cells) due to the itinerant strong sustain discharge, thereby lowering the firing voltage for both the adjacent and discharge cells during the ramp-up period. However, the phosphor layers in the discharge cells are deteriorated due to the strong discharge, whereas the phosphor layers in the adjacent cells are not degraded due to the absence of the strong sustain discharge. Consequently, when the displayed image is white, the temporal boundary image-sticking cells exhibit a higher luminance with a dark background image. Meanwhile, when a single color image is displayed, the temporal boundary image-sticking cells induce a color difference with a dark background image.