Re: Monitors: not quite perfect, yet.
- From: "John J. Lee" <phrxy@[redacted]>
- Subject: Re: Monitors: not quite perfect, yet.
- Date: Wed, 4 Apr 2001 16:47:55 +0100 (BST)
On Sun, 25 Mar 2001, Derek Pomery wrote:
[...]
> I can understand some sort of problem with your eyes possibly perceiving
> monitor flicker (especially noticeable when the screen is mostly white and
> refresh rate is low).
> But how on earth can you be having a problem with flat screens? There is no
> refresh there. What you are seeing on a flat screen is no different then on
> a piece of paper.
[...]
As several people have pointed out, the brightness of at least some TFT
LCD flat screens are deliberately varied (rapidly) over time by the
electronics, in order to get more perceived colours out of the limited
number of brightness levels the pixels can output statically. So there
can be some visible flicker. Older LCD screens don't do this as far as I
know. People who find the flicker problematic might also try setting the
number of colours on their desktop to a very small value, or even to
monochrome, if it'll let you.
All this is just what I've heard, I've not verified any of it.
John
[Moderator: The varying brightness technique on TFT displays is mentioned
on a few web pages of display vendors, including
http://www.peavynet.com/custom/disp/faq.htm (and other pages that
can be found on a Google search) - JMO]