[Trac #495] protective film left on LCD in B1 build

[Mary Lou Jepsen]

A very few units actually already had the protective sheet off.  The sturdy
layer I fear was the polarizer - that needs to stay on.  

The ones that had the protective layer removed showed visible air bubbles
making it obvious to the operators that it had to be removed.  This happened
perhaps 5% of the time.  

Apologies - if anyone has destroyed their panel this way - please contact me
and I will try to find another solution - perhaps sending you a new
polarizer that you can peel and stick (carefully to avoid air bubbles).

- Mary Lou

-----Original Message-----
From: Bert Freudenberg [mailto:bert at freudenbergs.de] 
Sent: Thursday, December 21, 2006 4:09 AM
To: OLPC Developer's List
Cc: Mary Lou Jepsen
Subject: Re: [Trac #495] protective film left on LCD in B1 build

On Nov 28, 2006, at 2:57 , Zarro Boogs per Child wrote:
>  Every single unit has the protective film still on the polarizer,  
> they
>  were not removed by Quanta (we can get this next time!).  You can  
> take off
>  your protective film, carefully, it's only 4 screws - all on the  
> bottom of
>  the brick (the brick is the LCD - motherboard assembly), you have  
> rotate
>  the brick to the left, unscrew the two screws that you can get to  
> (philips
>  head), and then rotate to the right and get the other two screws.
>
>  Next take off the left and right short green things (part of the  
> "bumper),
>  and then take off the plastic face plate over the LCD.  Now you  
> can peel
>  the thin protective layer of plastic off the polarizer.
>
>  - Mary Lou

I tried to do that yesterday. After disassembling the unit, I tried  
to peel off the film starting at the display's upper left corner.  
However, what came off was a rather sturdy layer of plastic sheet. I  
had expected some thin film like you would get on any new mp3  
player's display. But this layer was like a part of the display  
itself. Fortunately, I only took off like 5 mm, and because it didn't  
feel right, I tucked it back in.

So ... what should the protective film look like? Did anybody else  
try this? Is it a notable difference in appearance, or should I  
rather leave it alone?

- Bert -