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    Laptop screen hacking (LVDS-tech problem)

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by davegsm82, Jan 8, 2012.

  1. davegsm82

    davegsm82 Newbie

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    I'm looking to interface a small LCD panel to a laptop motherboard (used to be an advent something or other) using the existing LVDS channel.

    The screen I'm using is a LTM10C321F (same as LTM10C321W) for which I have the datasheets.

    Its a 1024x768 resolution panel, 3 channel LVDS+Clock, same type of interface as what the laptop was intended to drive.

    The original panel was 1200x800.

    Modern LCD's have an I2c EEPROM containing information about the display (EDID), such as resolution, brightness, clock speed and much more, the new LCD doesn't have an EEPROM so I have put one in circuit with modified information from the original laptop screen (I have changed the data relevant to the number of pixels H+V and lowered the clock speed).

    Regardless of whether the LCD has the EEPROM or not, or if it has the correct information, all I get is the same image on the screen as shown in the picture below. Vertical lines, with a double white line, double blank line then another double white, could be something to do with an incompatible clock speed.

    So the question is, does anyone have any information about playing with the LVDS interface, whether the BIOS of the laptop is likely to have an absolute fixed timing rate/pixel ratio etc.

    Before anyone says it, its for a special project, I'm not just trying to hack a different screen into a laptop for the sake of it.

    Dave.
     

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    davegsm82, Jan 8, 2012
    #1
  2. Meaker@Sager

    Meaker@Sager Company Representative

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    Do you get the same thing with any screen or just this one?
     
    Meaker@Sager, Jan 9, 2012
    #2
  3. davegsm82

    davegsm82 Newbie

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    davegsm82, Feb 10, 2012
    #3
  4. Rykoshet

    Rykoshet Notebook Deity

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    Nicely done
     
    Rykoshet, Feb 10, 2012
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  5. H.A.L. 9000

    H.A.L. 9000 Occam's Chainsaw

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    Impressive! :cool:
     
    H.A.L. 9000, Feb 10, 2012
    #5
  6. granyte

    granyte ATI+AMD -> DAAMIT

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    really impressive keep up the good work
     
    granyte, Feb 10, 2012
    #6