Is it true or just an "old wives tale " ?

For several years now I've removed all the instruments with liquid
crystal displays ( LCD's) from my sailplane on the advice I got from an
"expert " some years ago . I was told that if you store the glider with
instruments in an outside hangar where the temperature drops to below
-20F at times , then that is very hard on the LCD's . I did in fact
have an old Garmin start up in the Spring one year after winter
storage, the screen turned brown then expired .

Thanks ,

Ron Clarke.