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Image Retention of Plasma Display Panel
The plasma display panel has one of characteristics that can result in panel image retention depending on how the
plasma display is used. The following are the common reasons for and effective preventive measures against the
image retention.
Characteristics of Image Retention
Image retention is caused by partial degrading the phosphors due
to the partial display of character and figure.
ϰ For example, when the characters as shown in Fig. A are
displayed continuously for a long period of time, only the
phosphors (Red/Green/Blue) displaying the characters are
degraded. Consequently, when displaying an all white image on
the entire screen as shown in Fig. a, the marks remaining by the
characters will show colour differences; therefore, note that it is
not burnt remains of the phosphors.
The degree of image retention is proportional to the Brightness
and Display Time for the characters and/or figure
ϰ The brighter the characters and figure, the more phosphor is
degraded. As shown in Fig. B, in case of displaying images that
have different brightness each for a long time, Fig. b shows that
the brighter the image, the more it tends to remain.
* The illustrations are images to explain image retention. The actual manners on the image retention vary depending
on such conditions as operation time and brightness.
Methods to Reduce the Occurrence of Image Retention
We recommend that you use the screen saver functions
The following are common phenomenon which occur when operating the Plasma Display Panel due to structural
reasons.
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) an then switches to another
image, it may leave an “after-image” on the screen. This residual image will disappear on its own and return to
normalcy. This is not a malfunction.
Panel Surface
The plasma panel displays images by generating discharges internally. This could raise the temperature of the
display surface. In addition do not allow any forceful impact to the surface of the panel because the front filter is
made is a fine-processed tempered glass.
About Screen Driving Sound
The panel of the Plasma TV is composed of extremely fine pixels and these pixels emit light according to received
video signals. This principle may cause you to hear a buzz or electrical hum coming from the TV. This is not a
malfunction.
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ABOUT PLASMA DISPLAY PANEL
[Fig. B] [Fig. b]
[Fig. A] [Fig. a]
