Proposed ban on LCD and Plasma screens ?

[Poxy]

Thanks for telling me the light source is LEDs/transistors. All
the time I thought there were compact fluorescent lamps (containing
mercury and phosphors) behind the LCD panel.

I doubt very much they use LEDs - none of the panels I've seen inside use
them - they use cold-cathode fluoros. LEDs don't have the light output nor
colour purity of fluoros - yet.

Anyway, don't white LEDs use phosphors to produce their "white" light?

 

[Dorfus Dippintush]

I doubt very much they use LEDs - none of the panels I've seen inside use
them - they use cold-cathode fluoros. LEDs don't have the light output nor
colour purity of fluoros - yet.

Anyway, don't white LEDs use phosphors to produce their "white" light?

Do cathode ray TVs have white pixels?

Dorf

 

[Phil Allison]

"Dorfus Dippintush"

Do cathode ray TVs have white pixels?

** Monochrome ( ie B&W) ones do - dickhead.

But electron beam excited phosphors are different compositions from UV ( ie
fluor) or blue light excited ones.




........ Phil

 

[Bob Parker]

Do cathode ray TVs have white pixels?

Dorf

Yeah - black and white ones do.

Bob

 

[ian field]

I doubt very much they use LEDs - none of the panels I've seen inside use
them - they use cold-cathode fluoros. LEDs don't have the light output nor
colour purity of fluoros - yet.

Anyway, don't white LEDs use phosphors to produce their "white" light?

White LEDs normally consist of a blue LED with a yellow phosphor - except
for RGB LEDs.

 

[Bob Parker]

Thanks for telling me the light source is LEDs/transistors. All the
time I thought there were compact fluorescent lamps (containing mercury
and phosphors) behind the LCD panel.


Bob

I meant cold cathode fluorescent lamps, obviously. I was in a hurry....

Bob

 

[John Tserkezis]

At any rate, it's a moot point, since it probably won't be possible to
buy a new CRT monitor within a year or two.

Yes, you will, just not at the scale you used to. CRTs can still do things
that LCDs can't. Little things like higher resolution and better colour
rendition.
Little things like that, which the masses with more money than sense don't want.

That only leaves the CRT market at the higher end. Fine with me, as LCD
still doesn't cut it for me.