LCD displays don't burn in images claim is all bunk, I have learned!

[Hertz_Donut]

Hrm... no reasonable response so you resort to namecalling. Very mature.

I wasn't calling names. I was stating a fact.

Honu

 

[Lars-Erik Østerud]

LCD's don't burn in. Period.

Wrong. I have a customer at work. They have an HP LCD display (15" I
think). It has a clearly burned-in Windows XP login dialog box on it

 

[NickM]

Before someone posts that you don't need screen savers for CRT and LCD
monitors. Well let me tell you something. I never ever heard of any image
burn in for either (CRTs used too like 30 years ago). But I had the
freeware Speaking Clock v2.5 installed for a week. And the dark digital
digits left an image on my LCD screen. Just unbelievable! I tried to take
a digital picture of it with my camera, but my camera can't capture it
correctly. This is the best shot I could get. See the darker blue in the
middle (part of Speaking Clocks display and looks like a mirrored letter
"F"). And you can see two of the three digits on the right. Yes this is a
LCD ProView monitor.

http://img441.imageshack.us/img441/9128/20070216113704aadr2.jpg

Here is what the clock looks like:

http://www.soft32.com/Download/Free/Multilingual_Speaking_Clock/4-8502-3.html

There is an effect on some LCD screens that looks like burn-in, particularly
where an image such as for example the Windows task bar is displayed all the
time and where a thin slightly lighter coloured line may appear on some
screen background colours where the border of the task bar was. One of my
laptops experienced this when using the Windows 2000 classic desktop and was
noticed when hiding the task bar. It was slightly more noticeable in a
couple of areas, and less so in others. However, the 'burn-in' or whatever
kind of memory effect it is does fade so it's not visible at all after a few
days of leavng the screen inactive (i.e. - off). I'm not 100% sure what the
cause is, although I have an idea it's possibly related to capacitors in the
supporting circuitry not discharging properly which may or may not be
correct - I'm no electronics expert, but in any event the LCD does seem to
recover OK without permanent effect. I have several other LCD screens, and
none of the others have had this problem.

As my laptop was under warranty, the screen was replaced. The replacement
screen has been in a year now, and has not exhibited the same problem,
however, the screen brightness has always seemed generally less than the
original, which is more about the brightness of the backlight than what's
going on at pixel level in the LCD panel, so although the problem was slight
it does look as if the original panel was faulty.

Nick

 

[Al Pilarcik]

LCD's don't burn in. Period.

http://downloadcenter.samsung.com/content/UM/200608/20060816160606296_BN59-00509L-00Eng.pdf
From the Samsung 204BW manual:
"What is Image retention ?
During normal operation of a LCD panel, pixel image retention doesn't occur.
However,
if the same image is displayed for a long time, a slight difference in
electric charge
accumulates between the two electrodes which encase the liquid crystal. This
may
cause the liquid crystal to build up in a certain areas of the display.
Thus, the previous
image is retained when switching to a new video image. All display products,
including
LCD,are subject to image retention. This is not a product defect.
Please follow the suggestions below to protect your LCD from image
retention..."




Please Noozer, call Samsung and have them correct the manual.

 

[M.I.5¾]

Before someone posts that you don't need screen savers for CRT and LCD
monitors. Well let me tell you something. I never ever heard of any image
burn in for either (CRTs used too like 30 years ago). But I had the
freeware Speaking Clock v2.5 installed for a week. And the dark digital
digits left an image on my LCD screen. Just unbelievable! I tried to take
a digital picture of it with my camera, but my camera can't capture it
correctly. This is the best shot I could get. See the darker blue in the
middle (part of Speaking Clocks display and looks like a mirrored letter
"F"). And you can see two of the three digits on the right. Yes this is a
LCD ProView monitor.

http://img441.imageshack.us/img441/9128/20070216113704aadr2.jpg

Here is what the clock looks like:

http://www.soft32.com/Download/Free/Multilingual_Speaking_Clock/4-8502-3.html

It is true that LCDs don't burn in. However, they do have a sort of memory
effect whereby a static image can remain visible for some time after it is
removed. The effect is reversible, and panel manufacturers have different
methods of speeding up the process (it may depend on the panel). The method
varies from displaying a completely white image to displaying a random noise
pattern.

 

[Good Man]

Big sigh usually comes from those who say *PLONK* but are too
ignorant to do actual research.

did you even read the original post?

 

[Richard Bonner]

Before someone posts that you don't need screen savers for CRT and LCD
monitors. Well let me tell you something. I never ever heard of any
image burn in for either (CRTs used too like 30 years ago). But I had
the freeware Speaking Clock v2.5 installed for a week. And the dark
digital digits left an image on my LCD screen. Just unbelievable! (Snip)

*** I was not aware of burn-in on LCDs, but have always used a screen
blanker for all my systems both CRT and LCD. I figure the less they are
used, the longer the screen life.

I don't like screen savers because I find them distracting and they
still are using up screen life. I have some monitors from the early 1990s
that still give a good, strong picture. Until recently, I used one for
a display advertiser in my business showroom but have now upgraded it to
a newer monitor with better resolution.

Richard Bonner
http://www.chebucto.ca/~ak621/DOS/

 

[smlunatick]

*** I was not aware of burn-in on LCDs, but have always used a screen
blanker for all my systems both CRT and LCD. I figure the less they are
used, the longer the screen life.

I don't like screen savers because I find them distracting and they
still are using up screen life. I have some monitors from the early 1990s
that still give a good, strong picture. Until recently, I used one for
a display advertiser in my business showroom but have now upgraded it to
a newer monitor with better resolution.

Richard Bonnerhttp://www.chebucto.ca/~ak621/DOS/

What I tend to believe is that CRTs and LCDs will not get "burn-ins"
ONLY when the energy power save "feature" is enabled and active. If
anyone "disables" this in XP or if some software "interferrance" in XP
cause this feature to not work, burn-in will occur. That is one
important reason to have a screen saver (at least the "blank" screen)
turned on.