speaking of displays & DPM

[Darrell Norquay]

At 10:55 AM 8/26/96 -0600, you wrote:

>>At 08:23 AM 8/26/96 -0500, you wrote:
>>>>LCD displays also don't work very well when they are hot.  All the crystals
>>>>polarize.  There are a number of LCD video projectors and they have to be
>>>>chock full of fans to keep the LCD cool enough to remain useful.
>>>>
>>>
>>>No, LCD displays don't work well when they're cold.  The temp extremes
>>>inside a car is fine for LCD -- except very cold days.
>>>
>>>tom cloud

Older LCD panels were easily destroyed by temps in the +40C range.  Newer
technologies are better, but they still suffer from "freezup" when the temp
goes below zero.  You can get extended temp range LCD's, but generally they
are optimized either for high temp extremes or low temp extremes, but not both.
Lowest operating temp I have seen on a LCD panel is -20C.  Ever wonder why
auto manufacturers don't used LCD's in the dash?  Now you know.


regards
dn
dnorquay at awinc.com