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

[Bert Freudenberg]

I did not notice any air bubbles on my display. Anyway, I only ruined  
a small patch in the upper left corner of the display, otherwise it  
works fine. I can live with that (until I get a btest-2), it's  
probably better than me destroying the whole display trying to stick  
on a new polarizer ;-)

- Bert -

On Dec 23, 2006, at 3:55 , Mary Lou Jepsen wrote:

> 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 -
>