In article ,
John Rumm wrote:
On 09/05/2021 01:02, Dave Plowman (News) wrote:
In article ,
John Rumm wrote:
On 08/05/2021 11:25, Dave Plowman (News) wrote:

Anyone got one and care to advise?

I have a LG model...

My new laptop has an OLED screen, and is so much better than the
previous LCD. Especially not changing with viewing angle.

Yup the big wins are massive contrast ratios, and very wide viewing
angle. Nicer to vie in low light as well, with no backlight bleed
through.

Downsides include slightly lower peak brightness[1] than some backlit
sets, a screen that can accumulate some patchy "noise" visible in dim
areas (it tends to clear itself, and the sets usually have an option to
wipe it). There is also a possibility of something akin to screen burn
on areas where a static bright graphics is held for too long - that can
reduce the output of a colour in a area)

That does worry me, as I use the set for family Zoom meetings (HDMI lead
from a PC). Leave it on tile so I can see everyone at all times. So a
fairly static pic for an hour or so.

Its not as dramatic as screen burn, and you can't for example see the
image on the unlit screen. You also generally can't see it on a normal
picture. However you might see it on a flat area of *some* colours.

For example our TV gets used for youtube, and one of the on screen
gadgets is a search button, marked with a bright yellow swatch (to
indicate press the yellow button):

http://wiki.diyfaq.org.uk/index.php/...archSwatch.jpg

Now against a normal picture, it leaves no impression:

http://wiki.diyfaq.org.uk/index.php/...GOLEDDemo1.jpg
http://wiki.diyfaq.org.uk/index.php/...GOLEDDemo3.jpg

(images just being the stock pictures it cycles through if it has
nothing better to display)

However, if I manage to stick a solid area with a high red content in
that corner:

http://wiki.diyfaq.org.uk/index.php/...OLEDShadow.jpg

You can see a slight darkening. With time displaying other things it
fades a bit. Running the "de-noise" will also fade it a bit.

Oddly the peak level red youtube logo itself seems to leave no
impression. So its colour selective as well.

[1] This will only matter in high ambient brightness viewing conditions,
and the much improved contrast tends to compensate anyway. HDR content
is stunningly better on OLED than backlit IME.


Thinking on, many laptops will display a pretty static image for long
periods of time. When running off mains and unattended, unless you've got
things set to switch off the display.

--
*Vegetarians taste great*

Dave Plowman London SW
To e-mail, change noise into sound.