635115
13
Zoom out
Zoom in
Previous page
1/56
Next page
9
I
MAGE RETENTION OF PLASMA DISPLA
Y
There are different characteristics that result in panel image retention depending on how the plasma display is
used. Situations and effective usage methods related to ghosting are provided below.
Image retention characteristics of a plasma display
The image r
etention phenomenon of a plasma panel occurs due to par
tial phosphor degradation arising fr
om par
tial character and
figur
e
display
.
For example, when the character image as shown in Fig. A at the
right is
continuously displayed for a long period of time, the only
part of the phosphor
(Red, Gr
een, Blue) that will degrade will be
the color of the applicable character display por
tion.
Consequently
, when a white image is displayed on the entir
e
scr
een as shown in Fig. a, the character marks displayed up to
that time will
become a color dif
fer
ence visible to the eye, but the
phosphor will never bur
n.
Fig. A Fig. a
The degree of image retention is pr
opor
tional to the brightness of the characters and figures displayed as well as the display
time.
The tendency of the phosphor is to degrade more the
brighter the characters
and figur
es ar
e displayed. When
images of figures with dif
ferent levels of brightness, as
shown in Fig. B, ar
e continuously displayed for a long
period
of time, it becomes easier for image marks at
locations when the brighter
figur
es ar
e displayed to be
noticeable.
Fig. B Fig. b
* The image r
etention images in this document are exaggerated for the purpose of explanation. The actual manner in which the im
age
r
etention
is seen differs depending on the operation time and brightness.
Methods to Reduce the Occurrence of Image Retention
• Lower the Contrast and Brightness settings of the plasma display as much as possible.
A function is pr
ovided in the display that contr
ols the brightness of the scr
een to r
educe degradation of the panel. Using this
function
makes it
possible to reduce image r
etention.
• Set the PDP TV to a
“Move Screen” display
.
Move Screen
function
works to r
educe image r
etention when displaying images on the four corners, such as TV station logos and
clock display
.
(Settings can be made using
Move Screen
fr
om Function MENU shown on
33 .)
• Using in combination with moving images
Since the degradation of the fluorescent material pr
ogr
esses comparatively unifor
m for moving images, the occurr
e
nce of par
tial
image
r
etention can be contr
olled. We r
ecommend to use in combination with moving images such as a DVD.
* Please be car
eful since image retention will occur if display is left in PIP display state for a long period of time
.
*
T
elevision br
oadcasts include images displayed for long periods of time in which the left and right or top and bottom of the
image
ar
e cut and br
oadcast station name or time ar
e displayed for a long period of time at the same portion of the screen. Image r
etention
in these
portions can be expected to occur
, so please be awar
e.
Notes
About screen defects
High pr
ecision technology is used in the making of plasma panels but there may be dark spots (points that do not illuminate)
and
bright
spots (points that are too bright) in some cases. These do not indicate a malfunction.
About residual images
In some cases, r
esidual images may r
emain after the short-ter
m display of still images and another image is displayed, but
th
ese will
disappear and r
eturn to nor
malcy
. This is not a malfunction.
About the panel screen
Plasma displays display images by means of electrical discharges inside the panel. Because of this, the temperature of the pa
nel
sur
face
may rise in some cases. Also, plasma displays are made of finely pr
ocessed glass. A r
einfor
ced glass filter is installed over
the panel sur
face but avoid strong impact because ther
e is still danger of glass breakage.
13


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Hitachi 42PD580DTA at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Hitachi 42PD580DTA in the language / languages: English as an attachment in your email.

The manual is 0,77 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info