RE: TI-H: EL thoughts
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RE: TI-H: EL thoughts
Hmmm, I'm not sure about this but if your right (you probably are since it
sounds like you did your homework) I thank you for enlightening me - pun
intended :-).
On Saturday, October 11, 1997 1:49 PM, Christopher Lambert
[SMTP:clambert@sparcy.geneva.edu] wrote:
>
>
> Sorry this is a bit late, I have not been on the list in several days...
>
> On Sun, 5 Oct 1997, Jan Zumwalt wrote:
>
> > While well meaning, I believe your friend is a bit incorrect. A
> > LCD works by reflecting most of the time. When you see a letter,
> > the crystal molecules are twisted by a charge in such a manner
> > as the light is ABSORBED BY A DARK BACKGROUND.
>
> The background IS reflective, not dark. When there is no charce in the
> liquid crystal, then it twists the light. When there is a charge, then
> the light is not twisted.
>
> --------------------- <----- vertical polarized filter
> 888888888888888888888 <----- Liquid crystal
> --------------------- <----- horizontal polarized filter
> +++++++++++++++++++++ <----- reflective surface
>
> If the reflectife surface is removed, then you would be able to see
> through the display (a clear LCD, cool...). All charactes and numbers
> could be seen fine. A EL panel could be placed here with no problem.
>
> > On Sunday, October 05, 1997 2:47 PM, xenocide@erols.com
> > [SMTP:xenocide@erols.com] wrote:
> > > I was recently talking to a friend at Denny's about
> > Backlitting
> > > a TI,
> > > and he suggested that an EL panel or LED array could
> > > theoreticly be
> > > placed behind the LCD display, due to the fact that LCD
> > > displays are
> > > just clear glass or plastic over a transparent liquid cristal
> > > layer. the
> > > only problem is to remove or at least pull the backing of the
> > > LCD pannel
> > > away far enough to place the EL panel or LED aray behind the
> > > liquid
> > > cristal layer.
> >
> >