Dave Plowman (News) wrote:
In article ,
William Sommerwerck wrote:
Who says fluorescent is inefficient? LED could be better if you could
turn off those in the dark parts of the picture -- but no claims for
that.

Quite the contrary. Many LED sets use local dimming to improve image
contrast.

No claims for that I could see. If it does can only be a good thing as it
could give truer blacks as well - a problem with any backlit device.


Other problem with LEDs is producing a continuous spectrum smooth
white light -- needed to give all the colours from LCD.

The last thing you want is a continuous spectrum.

Eh?

Ideally, you want the R, G & B spectrum of the backlight to match the R,
G & B spectrum of the LCD pigments. That'll give you a spectrum with
three big spikes in it.

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