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 Post subject: A laptop screen
PostPosted: Tue Oct 04, 2011 12:26 am 
8086
8086

Joined: Thu Jul 15, 2010 10:44 pm
Posts: 80
Hey, an old HP laptop finally decided to go out on me. I took it apart and I would really like to know if it's possible and how on to make the screen work for something else. I would like to have one of those picture switching deals with a screen that big, maybe do something like they have in potter's world, just throwing out some ideas.


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 Post subject: Re: A laptop screen
PostPosted: Tue Oct 04, 2011 7:30 am 
Thoroughbred
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Joined: Sat May 07, 2011 12:30 pm
Posts: 1922
Location: A place not actively occupied by something else.
You would need a way to interface the display inverter. The display inverter takes info from the graphics card and sends it to the screen in raw format. The circuit boards inside a normal screen include display inverters and decoders. You will need to figure out a way to decode the signals.


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 Post subject: Re: A laptop screen
PostPosted: Wed Dec 14, 2011 7:56 pm 
Million Club [PC]*
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Joined: Sun Feb 12, 2006 5:29 pm
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Location: Motor City, folding for Mom
Close...

The inverter powers the backlight (on a flourescent-backlit LCD display.) It converts DC to AC, to power the lamp.

As for the display itself:
All LCD panels are driven by an LVDS (Low-Voltage Differential Signal) input.
Where a laptop display, and a 'normal' display (desktop monitor, TV) differs is this:
- Laptop: LVDS output is directly from the laptop's video chip
- 'normal': LVDS output is from a chip in the display cabinet (converts VGA, DVI, HDMI, etc. input to LVDS signalling for the display.)

So, not only do you need to power the inverter (that should be the simple part), but you also need to drive the display (not so simple.)

<edit>
now I notice how long it's been since that post.... Damn, this folder doesn't get much traffic! :|


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