From: tholen@antispam.ham
"Rich Walsh" writes:
> LCDs don't get burn-in but they do suffer from "lazy pixels" which looks
> very similar. Each pixel relies on the liquid crystal to contort itself
> in proportion to the strength of the electrical current that's applied.
> If the crystaline substance is held in the same partially contorted state
> for a long time, it may get "stiff" and fail to respond sufficiently to
> the applied current. The result looks like burn-in but isn't. IIRC,
> the cure is to have the monitor display a pure white surface for 12+
> hours. There's an article in Apple's knowledgebase that describes the
> problem and solution in greater detail (other manufacturers probably
> offer similar information).
If I move a window and see a ghost of it where it used to be, I'll
call that burn-in, regardless of what causes the effect. Yes, the
ghost does slowly fade away over a span of hours, but if the cure
takes a lot longer than it does to create the burned-in image in
the first place, you're fighting a losing battle.
What's interesting is that I've been running dual-head systems at
both home and work for many years, and only one of the two identical
monitors (purchased at the same time, thus with the same amount of
usage) will suffer from the burn-in effect. And the effect isn't
uniform over the entire screen either. In both cases, the upper
left corner was the most susceptible.
For better or worse, in each case the monitor with the burn-in
problem died (either the backlight or the power supply for the
backlight), so it's been replaced. And I replace monitors in
pairs, so I have a spare monitor now, both at home and at work.
The old monitors were Samsung. The new ones are Dell-branded, but
made by LG, I understand.
--- Internet Rex 2.31
* Origin: Aioe.org NNTP Server (1:261/20.999)
|
