About Plasma Display Panel

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.

ϰFor 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

ϰThe 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.

[Fig. A]

[Fig. B]

[Fig. a]

[Fig. b]

*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 26 .

NOTE

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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