And then we have e-Ink....:)
----- Original Message -----
From: <Nessus_at_post3.tele.dk>
To: <SkunkworksAMA_at_yahoogroups.com>
Sent: Wednesday, October 06, 2004 11:42 AM
Subject: [SkunkworksAMA] Re: New file uploaded to SkunkworksAMA
>
>
> --- In SkunkworksAMA_at_yahoogroups.com, Scrapper Black Dragon
> <scrapperbd_at_y...> wrote:
> > --- Tethasandry J'kress <tethas_at_s...> wrote:
> > > Every moniter is different slightly, even the same make
> > > and model #...
> > In this case it a dodgey old CRT system that was probably
> > set dim to avoid 'flame out'. Hence when viewed on either
> > of the other systems both of which have TFTs. No, they are
> > NOT LCDs; LCD is like a digital watch and can't do colour!
> >
> > > Through, it does look a little
> > > blue to me...so our moniter settings are likely close to
> > > the same.
> > I 'fixed' the pic on the dark monitor, hence it is now too
> > light on a 'more correct' screen.
> >
> > > Doesn't look bad at all however.
> > Thank-you; we aim to please. :-)
> >
> > Incidentally, those 'flat panel' monitors, despite what you
> > may see advertised etc, are NOT LCD (Liquid Crystal
> > Display). Liquid Crystal only comes in one colour - black.
> > Tiny magnetic particles are polarised to form an opaque
> > surface between two thin sheets of glass. 'Colours' in
> > watches with LCD screens are background colours that are
> > obscured by the black liquid crystal when it is 'on'. The
> > monitors are TFT (Thin Film Transistor); like tiny LEDs
> > (Light Emitting Diodes) all bunched together. Some of the
> > real big 'monitors' can be plasma that uses a modified CRT
> > (Cathode Ray Tube) system - like many tiny monitors joined
> > together, each the size of one pixel.
> >
> > So feel free to call them 'flat panel', but please don't
> > call them LCD!
> >
> > Scrapper, Black Dragon, picky with his technology terms.
> >
>
> Ouch, I detect a good amount of anger about this subject. Chances
> are I may fuel it, though I hope this explanation may help to soothe
> it next time you come across a monitor advertised as LCD.
>
> It's true that LCDs cannot produce color. A passive LCD pixel can
> either block light or let it pass through, which is what you'd find in
> inexpensive displays on watches, radios and various appliances. An
> active LCD pixel can allow light to pass in varying degrees. This is
> where TFTs come into play (actually, there's also a capacitor for each
> transistor but it probably would've made the name clunky so it's
> played down). The TFT circuit allows the LCD pixel to display a
> greyscale of 256 shades, which would make a nice monocrome display. We
> want color, so the pixel count is upped by a factor of three and a
> tinted layer is placed above each one. They are also scaled down so
> three rectangular subpixels fit into the space of one real pixel (they
> are really small, so chances are you'll need a magnifying glass to see
> them, but they are there).
> So to make one of today's common flat-panel screens, both LCD and TFT
> is needed. A pure LCD monitor would be a boring sight and purely TFT
> would be no sight at all. :)
> Other technologies are SED (very interesting, but not mass-produced
> for at least another year), OLED (need more work, before it can be
> used in large, long-lived displays) and plasma (flawed, but put into
> production anyway), all of which are lightsources by themselves and so
> does not need to be backlit like current LCD displays.
>
> Uh, also, I'd better point out that LCDs are not based on magnetism.
> The current passed through the crystal layer causes it to twist and go
> out of alignment with the polarised layers of glass and hence block
> light from passing. Removing the current snaps the crystal back into
> alignment. There's a lot more to it that just this, but if that level
> of detail is desired it can easily be looked up.
>
> Regards,
> -pawtuxet
>
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Received on Thu Oct 07 2004 - 00:01:16 CDT