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-   -   use laptop screen on a pc?? (https://www.techwarelabs.com/community/showthread.php?t=1306)

Dragon 02-14-2005 08:38 AM

oki found this, but i dont know if the layouts are the same for each or specific to models... it would make sense that they were the same but....

http://www.esskabel.de/Datenblaetter...U/G150XG01.pdf

also this:

http://www.esskabel.de/Datenblaetter...102BC29-01.pdf

and well... this is a bit pricey:

http://www2.dvigear.com/mudtolvad.html

harrynac 03-15-2005 12:30 PM


harrynac 03-15-2005 12:30 PM


Dragon 03-16-2005 09:08 AM

well.. this is somewhat helpful, but somewhat discouraging, im gonna keep looking anyway.. like i said, ill keep you guys updated, any help is great! just need that lvds 1 pinout

crash6 03-22-2005 03:07 AM

lcd to desktop
 
ok i'm reading here and not quite understanding

is it possible to take my lcd from laptop ibm thinkpad 600x and hook it up to my vid card dvi port ??

omegatotal 04-17-2005 08:17 PM

Quote:

Originally Posted by eviltechie
hmm
good thinking there
writting the assembly code for the drivers yourself to allow a special pin configuration

ill have to look into that

btw welcome to the forum
its never too late to jump in this thread as this is more of a cumulative knowledge database

time to work my assembly skills


wont work, it's a difference in the electrical signal, like trying to plug in a parellel printer to a serial port,

AFAICR LCD's from laptops and such use TTL or tmds? signals, but what u can do is get a really cheap laptop that works but needs a new battery/power or drives.. and just use it with an external usb storage device... because the signal from the laptop should be good for a 10 foot run from motherboard to the display if good cabling is used.. and since ur running it off ur car anyway it wont need an inverter just get the pinout for the battery... should work on older laptops..

Turboman762 05-11-2005 06:16 PM

Well what about using an RCA cable like a tv, im lookin to put a monitor/tv in my car so the quality can be kinda sketchy.

thanks for the help in advance
or Svideo

vee_ess 05-12-2005 02:38 AM

Both RCA (composite video) and S-Video are analog connections while the laptop screen utilizes a digital connection.

miai 06-01-2005 11:29 AM

Hi, i plan to buy a second hand junk laptop (like 486) and replace it's motherboard+cpu with a newer Celeron@800+mb i happen to have unused. I'm ready to enlarge laptop's box or whatever it takes to see it done. Any hints on what s/h laptop to pick or what will be needed like special videocard?

supertoy 06-02-2005 04:58 AM

Hi, does any one here have a Dell Laptop LCD to work with a PC? I have three Dell laptop LCDs (C800, CPt, CPi) but I need help converting it for PC use. Any information would help. Thanks

botter 06-08-2005 09:21 AM

Quote:

Originally Posted by supertoy
Hi, does any one here have a Dell Laptop LCD to work with a PC? I have three Dell laptop LCDs (C800, CPt, CPi) but I need help converting it for PC use. Any information would help. Thanks

metoo !!! for the LG Philips lcd monitor Model (lp150x2),

Thanks to help me!

;) ;)

tefryjethrohobab 08-24-2005 12:10 PM

it realy can be done for free
 
Ok, here's the answer to your question. And no, before you ask, I haven't done it yet I only started 2 days ago. still need info on my MB to even stand a chance. Now then, as stated a couple years ago on this thread, nearly all older lcd panels have completely different pinouts/driver specs. Also as posted earlier each of the older MBs have the hardware driver built in which connects to the prosessor core through a standard data BUS built onto the MB.

This bus in pre-Pentium systems is probably ISA but may be PCI, in P1-P2 or so It's probably PCI but may be AGP, in most new systems it is AGP.

If your system uses the ISA achitecture your hopes of dual display are dashed unless you are able to code a custom driver to lie to windows that it is a PCI device, not sure bout dual display in linux but if it can be done there is probably an open source driver already out there for Multi displays using ISA. This assumes that your 'puter supports ISA as most no longer do. there are PCI riser cards however which bridge to ISA. All which I've ever seen have proprietary connectors though and we again hit the spec finding wall as the manufacturers usualy didn't bother to label them. with a bit of creative soldering however it can be done.

Once you find out the BUS type from the manufacturer you need to remove the display adaptor. If you have one which unplugs you're lucky otherwise like me you'll have to beg around for specs. Just tell the companies you contact that you are a student or they WILL be most unhelpful. It's not a lie as you are becoming educated ;) . after you have the requred information you have a few options. You could jot down a wiring diagram and make your own contoller card using the parts from the MB (I recommend this ONLY IF YOU KNOW WHAT YOU ARE DOING. if you trash anything or over heat the controller IC you will need another identical MB to start over with), or you could get out your hack saw and cut around the entire circuit which could then be wired to a riser card of the correct bus type. Simple riser cards range from free to ~$10 US at your local computer graveyard. Heck, most will also give you the junk laptop too, just to get rid of it. Junk, only in that it runs on a 40MHz 486 WINCHIP. Basicaly too old to sell in good faith. Mine even came with the original 'pleather' case.

now that you've sucsesfully modded your old display adaptor and have it plugged into your system it's a 'simple' matter of downloading and installing the driver. Drivers may or may not be available for your specific
OS however XP should be able to initialize it as standard vga adaptor at 16 bit color 640x480 res. Other simple tweaking of standard driver settings should be possable. If it's new/old enough linux and windows both should have correct or compatable drivers included with the base installation.

OK, so this project is not for nubes as a complete walkthrough would have to be made for every onboard adaptor that has ever been made which would turn into a realy huge project on WIKI or somesuch. offboard adaptors would be easier as there is some degree of standardization on a per-brand basis. Further reasearch could even allow merging part of the old controller to a better vid card which comes with it's own driver cd.

Ok that covers the old school displays now on to modern ones. This is a far sight easier. Most modern panel manufacturers have agreed upon a standard for panel controller signals and can be used on almost any device capable of driving an LCD. there are quite a few of them, all very much cheaper than a flat panel display. A simple google seach will unearth hundreds of them so I won't even bother to list any of them here. you must have the specs of your display to find out if it's compatable before you buy it or it won't come close to being worth it. once you have a compatable panel and display adaptor in mind try ebay to get a better price as usual. many of these adaptors are MINI-PCI and cheap. to use these you would simply buy a PCI to MINI-PCI riser for less than $10 US. Again, google to find these or print your own. OR try your local computer graveyard as they probably will simlpy give you one or sell dirt cheap. Old panel method will work too but this is easy to the point of being worth it. The only wiring absolutely required in the second method would be ensuring the correct pinout from the LCD.

As for the inverter to power the backlight use the parts from the old laptop or buy it. If the light is a cold cathode tube get that type inverter if EL use EL inverter. Easy way to tell the two types apart: if it's glass its a CC Tube If it's anything else it's EL (Tape, wire, rubber, plastic, etc.). Very rarely you will find LED arrays or light bulbs. If it has light bulbs replace with CC, EL or ultra bright LED as bulbs produce heat which will kill the LCD assuming that it even still works. If lighting is LED type no special wiring is needed, just DC power and a resistor. Value of the resistor will vary depending on the current draw, #of LEDs in array,type of array, and votage applied. Typically however LEDs use 35mA current for maximum brightness. Unless specs state otherwise never go above this or they'll die,melt,explode, etc. Generally during normal operation a LED will be 1.7V from Cathode to Annode. If you have a series array current is constand but voltage increases so to figure out voltage multiply the # of LEDs by 1.7 then subtract this voltage from the desired supply which must be greater than the calculated voltage of the LED array. If it's a parallel array the Voltage will be ~1.7V but they will take more current in the form of # of LEDs times .035A. You now have the voltage across the resistor and the current which must pass through it. To calculate the value of the required resistor ues the equation: R=V/I where R=falue of resistor in ohms V=Voltage across resistor and I=current in amps. In any case a .5Watt resistor of the correct value or higher as available will work without getting hot. Though I wouldn't recommend using greater than a 12V supply to be on the safe side.

To to this for free is, as I stated, simple. But requires a great deal of skill, time, energy, and patience. It just sounds more complex than it realy is. Will post more another time. also will try to give info on my MB if I can find it.

Grinnin Reaper 08-24-2005 12:57 PM

Wow this thread is still in use??? dang, next were gonna see a thread for overclocking a 486 brought back to the front page, lol. I guess it's lost some of it's original intent since the fall of price for a flat panel screens, but the challenge of making it work will keep it alive for awhile I suppose.

tefryjethrohobab 08-24-2005 02:04 PM

That's about the size of it. why bother to do anything if not for the challenge? besides free will always equal better if the application does not require quality graphics. IE the car MP3 player or gps system. otherwise the thread never would have begun. people would simply have gotten laptops or some such for their projects. besides, recycling can be a lot more fun than hauling the bin out to the curb for pickup lol.

johnson4 12-01-2005 02:34 AM

use broken LCD monitor
 
Any thoughts on useing a laptop screen to replace a brocken or cracked lcd monitor?

smartkid 12-02-2005 12:01 PM

Cracked? dident know lcd moniters could crack.

It sounds good, but i dont know
if you can do it.

johnson4 12-02-2005 04:24 PM

ya ebay has a ton of them, whether it's a crack or other damage, it usually seems to be panel problems and the other components are fine, My thought is that all the components needed to use a laptop screen are in the monitor,
I just got a email from acer with the specs so Im going to look at the specs of some panel in lcd monitor to find something thats most likely to be compatable.

smartkid 12-02-2005 04:36 PM

very cool, tell me if it works

myn4me 03-14-2006 10:44 AM

An interesting coincidence?
 
I have a Dell Inspiron 7000 which is currently in 50+ parts all over the place. The HD is now a portable drive and the LCD is ??. I am looking at the LCD and came across this interesting thought.


After the inverter board... there are 18 color wires connected to the screen. coming into the inverter there are 27 wires. i figure 2 are power...the big black and white ones. this leaves 7 wires left...to which i still cant figure.

I looked up a interface called DFP this has 20 connectors! I dont know what any of them do but could this connector be the answer?

I ask b/c the connector came out in 1999 the same year as this laptop!

DFP Pinout >>> http://www.interfacebus.com/Design_D...or_Pinout.html

jf1992 03-18-2006 04:51 AM

hey, Every1

new here :) but very interseted in lcd mod, ( i might buy a 14" one on ebay :) )

ive read all the 18pgs, and i kno ist hard and almost immposible to do it unless you have a converter thing, unfortunatley its very expensive and so im trying to find sumthing else/.

ive come with this:

http://cgi.ebay.com.au/Pocketsize-PC...QQcmdZViewItem

(if it doesnt work look for 'lcd converter' in au ebay)

can anyone tell me me if this would work?

Thanks,

bugs 09-20-2006 09:17 AM

Hi all,

I have read this entire thread with interest, I have come up with a couple of idea's why not buy a cheapo TFT monitor like a 13 inch jobb rip all the casing off and use that this way all the inverter stuff is already done all you have to worry about is routing the VGA cable.

The other thing I have a IBM 600e laptop the CMOS bnattery just died on me about a year ago iv just got around to resurecting it and went to the ibm site for a manual on where the battery is, which I got HERE

if you scrol down to the locations section then bottom view you'll see an exploded view of the screen as you can see there is a seperate converter card. would you be able to use this card or is this somehow hardwired into the laptop.

just my to penny's worth

BTW this is my first post so be gentle!!!!

Craig Dunn


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