Re: IIc Flat Panel Display

["Apple2Steward" <none@none.net>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message 
275318387360364776.286087mjmahon-aol.com@news.giganews.com">news:275318387360364776.286087mjmahon-aol.com@news.giganews.com...
> <giorgio.morocutti@alice.it> wrote:
>> Il Sat, 02 Jun 2012 12:45:47 -0500, Michael J. Mahon 
>> <mjmahon@aol.com>
>> ha scritto:
>>
>>> Wayne Stewart <waynejstewart@gmail.com> wrote:
>>>> I have a couple. The only place where they're really easily 
>>>> readable
>>>> is outside in sunlight
>>>
>>> Has anyone ever opened one up and played with the LCD bias?
>>>
>> And there are some schematics?
>>
>> Thanks
>>
>> Giorgio
>>
>>
>> Apple II and Apple III forever !!!
>
> It should be quite easy even without schematics.
>
> But after posting, I realized that a panel of this vintage 
> probably has a
> bias adjustment, labelled "contrast" or something similar. If 
> this control
> can change the display from "off" to "black", then that's all 
> that bias can
> do. If it is all the way at one end for best display, then 
> changing the
> bias range could make a real improvement.
>
> The next thing to try is more drive, but that's harder to do.
>
> -michael - NadaNet 3.1 and AppleCrate II: 
> http://home.comcast.net/~mjmahon


I recalled (and located) a post by Beverly Cadieux to the Apple 
II Mail Group in which she explained how she had improved 
readability of the screen on the IIc LCD monitor by removing the 
clear screen from the LCD display itself (2/17/2000):

"It is a plastic panel in the front, comparable to the glass 
screen of a monitor. You pry open the case and weasel it out. 
This plastic is thick and opaque, and makes the screen hard to 
see, Removing it exposes a soft, pillow-like vinyl layer where 
the display is fairly clear. A bright light and a certain 
"stance" also helps you to see it more clearly.

When the //c is not in use, I lay the thick plastic panel back on 
top of the vinyl as a dust cover."

I've not tried this.

Although I don't use these screens frequently, I think that the 
C-Vue is more readable compared to the original Apple LCD.