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Help with LCD identification please?

Discussion in 'Electronic Design' started by Mark Jones, Apr 22, 2007.

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  1. Mark Jones

    Mark Jones Guest

    Hi, a friend gave me a graphics LCD module from an 9-year old copying machine.
    It appears to be a 640x240 STN blue/white CCFL unit. I've disassembled it trying
    to find some kind of identifiable markings, but have had little luck. If anyone
    could assist me in locating a datasheet, pin-out, or even a similar model, I
    would be most grateful. Here is everything I have on it:

    Little white sticker on rear:

    EDMGU14BCF
    3128A

    * LCD connector is a 17-conductor ribbon.
    * Opening the LCD module reveals an outlined "M" logo printed on the PCB's along
    with PC-U951B and PC-U148A, and GCMK-G2X and NCMK-M1X.
    * Flipping the LCD over reveals a few discretes and two chips: a KA324D (14 SOIC
    single-rail op amp x4) and a Panasonic 2N1EMA (14 SOIC, unknown, cannot match
    datasheet.)
    * Printed near the edge of the glass itself is: PLH6-BZE (I think it's a Z.)

    I can put up some photos if needed. Thanks very much for any help.
     
  2. Mark Jones

    Mark Jones Guest


    Anyone? Is this an OEM/custom part? Matsushita LCD's have close part numbers
    such as EDMGR25KAF but no match. I also found a datasheet for an EDM240128-10 (
    http://www.datasheetarchive.com/datasheet.php?article=1405446 ) but still this
    is little help. Thanks again.
     
  3. Gary Tait

    Gary Tait Guest

    I bet it is an OEM part number. There has to be controller chips, which
    by luck, are COB/COG, potted, ground, or house numbered.
     
  4. Mark Jones

    Mark Jones Guest


    Hi Gary, I was simply hoping for a cheap experimentation LCD but it's not
    panning out that way. For a controller, this module was plugged into a board
    containing an H8S HD6412350F20 uC and RAM if that helps. I cannot tell what the
    silicon is on the glass, and cringe at the thought of reverse-engineering any
    multi-layer PCB's. :)

    Here are some quick pics of the LCD:
    http://heliosstudios.net/temp/lcd/

    There's also a datasheet for the KA324D:
    http://heliosstudios.net/temp/lcd/KA324D.pdf

    And the EDM240128-10 similar datasheet:
    http://heliosstudios.net/temp/lcd/EDM240128-10.pdf

    Thanks for looking.
     
  5. Mark Jones

    Mark Jones Guest

    Anyone? Should I just pitch it?
     
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