>Hi all,
>
>I have recently received following request - make information displays for
>a courthouse, which would display 3(4) lines of 20 characters, would be
>visible from 5 meters and would be based on LCD technology. I have tried,
>that the characters should be about 1" (25mm) high, but the largest LCD
>modules I have found are 14mm (0.57"), made by Batron. Is there any chance
>to get such a large displays? Are there any manufacturers of LCD
>information panels? Any other helpful information appreciated. TIA.


Josef,

I would ask WHY LCD?
Main reason s MAY be low power, visibility, response speed, appearance.

All except response can be matched by rolling shutter displays which are
available in a  wide range of sizes.
Trying to remember what formats these are available in. For alphanumeric I
guess it would need to be star-burst.

Also, I suspect that a smaller display height may be adequate.
I imagine that you have modelled this - I just tried using felt marker and
paper :-) and feel the 0.57" display may well suffice - my eyes are not too
good and I could read 15 mm characters acceptably well at 5 metres. .

If price is not an object (and it probably is) consider using stacked LCD
graphics panels on which you can of course make characters of essentially
any size you wish.



regards

            Russell McMahon

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