RE: TI-H: EL thoughts
[Prev][Next][Index][Thread]
RE: TI-H: EL thoughts
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.
>
>
References: