snip
There's no need for a display since it is theoretically possible to get
all visible colours from RGB. Mixing dyes is a different matter.
--
*What happens if you get scared half to death twice? *
Dave Plowman London SW
To e-mail, change noise into sound.
Theory, remembered from many years ago, suggests that isn't quite true. I
seem to recall my colour TV lecturer at college, spending a whole session on
'the chromaticity diagram', and then explaining that there were certain
'non-spectral' colours such as brown, which could not be created by an
additive mix of R,G and B, and any brown that was seen on the screen was
actually some kind of orange or red, which was *perceived* as brown because
of the surrounding colours, and other visual cues. That might not be exactly
it, as this was all learnt nearly 40 years ago, but something close, I
think.
As to whether LEDs as backlights do a good job, I'm sure that they must be
at least as good as CCFLs at colour rendering, otherwise, the manufacturers
wouldn't be making such a thing about it. Flesh tones look perfectly fine on
digital cameras which use LED backlit displays.
My whole issue with this, was that the LED 'angle' was being pushed by
wording that *suggested* it was the main display technology rather than an
LCD panel which it actually is, and which the great unwashed are now
familiar with. That seemed to me to be a deliberate attempt to mislead
people into believing that it was something new and revolutionary - as SED
technology will be if it ever gets on the market, or OLED if they can get it
big enough.
I don't have a problem with them claiming that this backlighting technique
is revolutionary in TV sets - it is - and even claiming a reduction in
power, if that's true, for a leg-up on the eco-bollox ladder, but I really
think that they should be making that distinction, rather than trying to
bamboozle prospective buyers with questionable use of terminology which
punters are likely to have heard of, but won't actually understand.
On the power consumption issue, I still do not feel that this technology is
likely to consume anything like as much as the 100 or so watts that CCFL
backlighting does. The developments in the light output of narrow-angle LEDs
over the last couple of years is staggering. Some of the 1 and 3 watt types
could literally blind you. I believe that some cars are now starting to use
LED headlamps. It would be interesting to see how they stack up against the
50 watt consumption of 'standard' headlamp bulbs.
Arfa