Newsgroup: it.comp.hardware
Titolo: X display LCD

nessuno mi ha risposto a riguardo il mio annuncio sui display lcd dei
portatili, nessuno allora mi saprebbe indicare se esiste un sito dove parla
di questo, o schemi applicativi?


Pero` mica chiedi poco! :-)
Ho cercato "connect notebook lcd desktop" su 
www.deja.com
Ho trovato la risposta di un ingegnere ad una persona con il
tuo stesso problema.
Come pensavo, spiega che (molto probabilmente) lo schermo e`
connesso in modo digitale e non essendoci uno standard
riconosciuto (DVI e co. sono recenti e per desktop) il tutto e`
lasciato alla fantasia del produttore.
In poche parole, dovresti avere lo schema di chi ha fabbricato
il notebook e procurarti una scheda grafica capace di pilotare
direttamente un lcd.
Lui parla di apposite schede ISA o PCI per uso industriale
e di rimaneggiamenti al bios.
Qui forse c`e` una scheda che fa al caso tuo
http://www.octagonsystems.com/Products/5420/5420.html
Oppure qui
http://www.sageinc.com/products/boardsupport.html
Questo e` un paginone di discussione tutto sugli lcd
http://www.eio.com/public/lcd/
Insomma.... chi cerca trova ;-)
Ciao
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Hi Adam,
I am an engineer for a company that designs and manufactures x86 based
Single Board Computers for embedded applications. One of the main
requirements from our customers is the ability to connect LCD panels to the
boards. As such, most of our systems include both the standard VGA output
for CRT, as well as an on-board digital interface for the LCD.
This is where the problems start :-) . As there is no standard for the
digital interface, it is up to the individual manufacturer on how this
interface will be implemented. But with details of the interface, and the
LCD datasheet, it is relatively easy to cable up the LCD.
It is possible to obtain ISA and PCI cards which will drive LCD's directly.
Your best bet to source one would be one of the Industrial / Embedded PC
companies, but check their LCD support list beforehand! Most of these cards
would be based around the Chips and Technology Chipsets. Go for cards with
the 65545 / 65550 or higher if possible.
The next problem is the Video Bios itself. Depending on the panel that you
try to use, you may have to make adjustments to the video bios registers
(as not all panels have the same timings etc.). For this, I would recommend
that the card you choose also has good Tech Support - it can be a nightmare
to get the registers correct (again, if you pick a panel from the companies
supported list, the bios shoud already be available, saving a lot of
heartache :-) )
As for sourcing cheap panels, for experimenting, don't buy one from an LCD
supplier, as they cost a small fortune. As you say, the best bet is to go
to computer shows etc. and try to pick up an old notebook and rip the
display out of that. A word of warning here, a lot of manufacturers use OEM
panels, which it is near impossible to get data for, and use obscure /
proprietry connectors. Finding a supported panel this way is more
difficult, but a lot cheaper in the long run! Some manufacturers LCD's are
pretty standard (Toshiba, NEC, Sharp etc.), and are the best to go for if
you have the choice.
So, it is a viable project, and can be greatly rewarding once you get the
panel fired up, and a decent image on screen.
Drop me a line if there is anything that I can help you with. Good luck!!!!