vga inngang til bærbar lcd skjerm?

[thomas82]

Har planer om å plukke fra hverandre en bærbar pc og putte den i bilen. Pc'en vil stå framme i dashbordet, har tenkt å plassere skjermen bak i bagasjerommet. Spørsmålet er då om det finnes en overgang e.l. slik at eg kan få til en vga inngang på skjermen?

[Hårek]

Nei, det går ikke. Skjermen i en bærbar har et interface som ikke kan kobles til en vanlig PC.

Det er mange som har lyst til å bruke slike skjermer, men alle blir skuffet.

[thomas82]

Humm Ser at det går en slik "flat-trykt"-kabel mellom skjerm og hovedkort. Tror du det er mulig å lage en hjemmelaget skøytekabel? Burde jo vært mulig i teorien?

[Hårek]

Det er i såfall din egen teori som ikke deles av noen andre ...

Det hjelper ikke å skjøte kabler når signalet ikke kan brukes.

[Flippo]

Forlenging? Tja, blir jo lang kabel og mye elektrisk stoey i en bil da. Blir litt lodding og herjing samt at det ikke er sikkert du klarer aa drive signalet over en saa lang kabel. Det er neppe designa for aa gaa mye lengre enn de faa centimetrene i en laptop :-)

 

Ang. VGA til LCD panel:

 

Billigere aa handle en ny 15" LCD i butikken med VGA inngang tror jeg. Mindre mas og bry garantert. Det du trenger er en VGA til LVDS konverter. Grafikk kort i baerbare har ofte LVDS utgang eller en LVDS konverter paa hovedkortet i lap'en, men som separate produkter kan det virke som om de er svindyre.

 

http://forums.afterdawn.com/thread_view.cfm/98801

 

There are a few points that need to be noted before everyone gets too excited.

 

The first thing to note is that VGA is an analogue display technology. Secondly, laptop LCD's are 100% digital. There is no correlation between VGA and LCD they are two totally different beasts and LCD's will only accept a correct digital input.

 

The standard for this input for most LCD's is presently (of 2004/2005) - Low voltage differential signaling (LVDS). In fact that thin "paper ribbon cable" on the back of your LCD is referred to as a LVDS cable. To read up on LVDS go here http://www.atip.org/fpd/src/rep/dism/dism.html section 4.2.

 

The other cable going into the back of your old laptop LCD is the backlight power. The makeup of this cable varies between model but the norm is roughly that this cable is fed from an LCD inverter. In other words the LCD backlight normally takes power in the form of AC rather than DC and it normally needs lots of it. Input power to the inverter is normally in the range of 5v - 12v. What you need to do is find the (EXACT) model number of your LCD on the back of it then go searching Google for specifications. Once you have that you can go here http://www.digitalview.com/support/controller-solutions.php and they sell a VGA input board hopefully suitable for your LCD screen. As far as I am tell Digital View don't sell direct so you will need to find a local distributor willing to order the board in.

 

Of course if you are going to go to the trouble of getting a LCD controller and power supply etc. it would probably be cheaper to buy a used external LCD monitor on Ebay (although not as cool).

 

The only other option I have discovered is a board called "Margi Display-to-Go PC CardBus 4MB Video Output VGA/DVI" which has since been discontinued. The cool thing about this board is that it had a DFP cable output which meant theoretically that could wire it into the existing LCD controller board from your old laptop and it "may" work. I have not been able to find any of these new or used on Ebay or elsewhere on the Internet.

 

So in summary, it would seem that it is cheaper (and faster/easier/practical etc.) to go and buy a new (albeit budget) LCD monitor than to retrofit an LCD panel you have pulled from an old laptop. This is quite annoying especially for me as I have quite a few old laptop lying around the house and it would be way cool to reuse them but having to spend £200/USD$350 for a controller and adapters does not make sense.

 

og http://www.eio.com/lcdconnect.htm

 

og http://www.geocities.com/p9019/lcdpanel

Endret 29. september 2005 av Flippo