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LCD control

Discussion in 'Electronic Design' started by [email protected], Sep 4, 2007.

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  1. Guest


    I am looking for colour graphics LCD with driver. The size could be
    something like 128 * 64. In LCD control i have few doubts as below.

    1. There are lot of types available like TFT, passive type etc. From
    this which one to choose based on application? My application is to
    make a handheld tool like a Gameboy.

    2. While sending the data to the LCD driver, how is font sixe of the
    letter, location of text, colouring of the text or graphical
    information and all controlled? Is it require seperate micro which
    will do all the above i had mentioned or the readily available library
    function or macro kind of function will be availble within the driver
    itself? Because i am not intersted in creating this library. I will do
    only send the information to be displayed and those coloring
    information. Please clarify my doubts.

    3. I have seen some information from the website. None of the supplier
    give these kind of information. only they give dimensioning details,
    features thats it. Please suggest me some site to clear my basics
    about the LCD.

    Thanks in advance.

  2. Tim Wescott

    Tim Wescott Guest

    For this you need to either attend trade shows and look, or do some
    diligent web searching. The differences are mostly visual, and affect
    how useful the thing is going to be in sunlight, whether it needs
    backlighting, and how rapidly it can change the image.
    Don't be surprised if you have to write a library. A 128x64 LCD isn't
    going to show much detail, and a library of 5x7 characters is pretty
    quick to come up with.
    There are some sub-fields that you're just supposed to know the answers
    to, and LCDs seem to be one of them. Do web searches. Pay particular
    attention to articles by hobbyists -- often these are the best places to
    find "what everyone knows" spelled out for you.


    Tim Wescott
    Wescott Design Services

    Do you need to implement control loops in software?
    "Applied Control Theory for Embedded Systems" gives you just what it says.
    See details at
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