Paul,
To my understanding, the backlight controller of all LED lit screens
use high frequency flashing of the LEDs with different on-times, to
adjust the (perceived) brightness. So for instance, at 100%
brightness, LEDs are on at all times (no flickering). At 80%
brightness, LEDs are flashing while being on for 80% of time and off
for 20% of time. As the brightness decreases, the flickering
increases. All that said, due to the high frequency of flashing, it's
usually difficult to detect the flickering without paying special
attention. If your screen is annoying you, there might be something
wrong with it.
On Mon, Dec 28, 2009 at 11:03 AM, Pål Levold <paal.levold@xxxxxxxxx
<mailto:paal.levold@xxxxxxxxx>> wrote:
When I dim the brightness of my screen it starts flickering a bit
when going below 34% (on the four lowest steps). It's a somewhat
high frequent, small change in brightness so it's a bit hard to
spot at once. The lower I set the brightness, the more significant
it gets.
Is this a hardware problem that occurs no matter what or is it
something I can do to fix it? Anyone knows if this occurs in
Windows too?
Sincerely
Paul
