LCD woes...

[Tony Duell]

> 
> I finally got around to replacing the batteries on my TRS-80 PC-1 and
> noticed that the intervening years have not been kind to the LCD
> screen.  It appears that there is liquid crystal leaking out under the
> polarizing screen, creating what looks like black smudges on the
> display.

The black smudges are almost certainly areas where there's no liquid 
crystal remaining. Remember that the liquid crystal is placed between 
_crossed_ polarisers, in the unenergised state the liquid crystal is 
designed to rotate the plane of polarisation of the light by pi/2. 

> 
> I dug my less scratched up version out of storage and found the same
> thing, only worse.  I doubt these LCD panels are still in production. 
>  Anyone have any ideas that might be able to alleviate the problem?

Alas I can't think of a cure other than a new LCD unit.

-tony