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ABOUT PLASMA DISPLAY
Image Retention of Plasma Display
The plasma display has one of characteristics that results in panel image retention depending on how the plasma display is used. The following are the common cases and effective usages regarding the image retention.
Characteristics of Image Retention
The phenomenon of image retention is caused by partially degrading the phosphor due to the partial display of character and fi gure.
For example, when the character image as shown in Fig. A is displayed continuously for a long period of time, only the phosphors (Red/Green/ Blue) displaying the characters is degraded. Consequently, in case of displaying all white image on the entire screen as shown in Fig. a, the marks remaining by the characters will give color differences; therefore, note that it is not burnt remains of the phosphor.
The degree of image retention is proportional to the Brightness |
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and Display Time for the characters and/or fi gures. |
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The brighter the characters and fi gure, the more phosphor is |
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degraded. As shown in Fig. B, in case of displaying images that |
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have different brightness each for a long time, Fig. b shows that |
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the brighter image tends to obtain more remains. | [Fig. B] | [Fig. b] |
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*The illustrations are images to explain the image retention. The actual manners on the image retention vary depending on such conditions as operation time and brightness.
Method to Reduce Image Retention
Use “Screen Wipe” or “Luminance Manager” function on the display, which are available from Function Menu. (Refer to 27 ~ 28 .)
After displaying certain images such as still image for a long time, “Screen Wipe” can be used to reduce the image retention by displaying a completely white screen for about 1~2 hours. In addition, “Luminance Manager” function works in case of displaying such images on the four corners as TV station logos and clock display.
Use in combination with moving images.
Since the entire screen has relatively even degradation of the phosphor in moving images, it can avoid the partial image retention. We recommend to use together with such moving images as DVD.
Please be careful that leaving the images in
Common phenomena of Plasma Display Panel
The following are the common phenomena when operating Plasma Display Panel due to its structural reason. Please note that they are not malfunctions.
Residual image
When a still image or menu is displayed on the screen for a short time (about a minute) and then switches to another image, it may leave an
The residual image will disappear on its own.
Surface on Panel
The plasma panel displays images by generating discharges internally. This could raise the temperature of the display surface. In addition, do not impact strongly on the surface of panel because plasma panel is fi
Defective Spots on Panel
The plasma display panel is manufactured with
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