15 Feb
1998
15 Feb
'98
11:54 p.m.
On Sun, 15 Feb 1998, William Donzelli wrote:
Yes, very true (although a good CRT will last a VERY
long time). I am
basically curious about any long term chemistry that might occur. I can
see the rubber contacts on most LCDs failing in time, but they could be
replaced. What about the actual "liquid"?
That's a good question. I don't think there's any liquid in the sense of
some chemical suspended in some solvent. I think "liquid crystal" refers
to the interesting property of a certain class of compounds which can
exist in both an amorphous liquid state as well as a crystaline state
(e.g., in the presense of heat or electricity). I remember playing with
sheets of the stuff when I was a kid (around the time liquid crystal "mood
rings" were in vogue), but I have no idea which compounds are used in LCD
displays. Some inert polymer, I'd guess.
-- Doug