automatic tinting lcd sunvisor

Discussion in 'The Projects Forum' started by helpmemaster, Apr 14, 2015.

  1. helpmemaster

    Thread Starter New Member

    Apr 14, 2015
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    I want to make an LCD a sun visor (3 ft wide) placed in a windshield that automatically tints in broad daylight. Is it possible if I use the same materials used in a 3D shutter glass? If possible, where can I get a transparent LCD material that big? I tried disassembling the lcd on my broken laptop to see what kind of lcd it has but the lcd was not clear like a glass.
    http://hackaweek.com/hacks/?p=978


    any help would be great.. thank you!!
     
  2. Externet

    AAC Fanatic!

    Nov 29, 2005
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    LCD screens as in televisions, laptops, monitors have a thin layer of polarizing film on top. That is what makes them not fully transparent.

    I once removed that self adhesive polarizing layer out of a television LCD very carefully and ended with a clear glass screen. I still have it somewhere in the attic. I believe that is the principle used in some transmissive overhead LCD projection, and some people have done the modification for such application. Will see if I find a link :

    ----> http://displayblocks.org/fundamenta...-lcd-out-of-your-monitor-without-breaking-it/

    ---->

    You will still need to drive all the screen pixels with some signal to vary the amount of transparency/color. The white backing also has to be removed, leaving a fully transparent glass screen until driven with pixel activation.

    Found it ! ----> http://chrismeyer.org/projects/lcd-overhead/
     
    Last edited: Apr 14, 2015
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  3. helpmemaster

    Thread Starter New Member

    Apr 14, 2015
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    Can I see a picture of the LCD you got from your tv? Is it clear? The LCD I got from the laptop was transparent but its texture is similar to a jalousie window.
     
  4. Externet

    AAC Fanatic!

    Nov 29, 2005
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    Just checked the attic. The monitor is still there, reassembled, put back together. There have to be pictures hung on the net.
    Sorry, I do not use Google ----> https://duckduckgo.com/?q=see+trough+display&images=&iax=1&ia=images
    Re-thinking, seems you still need the polarizer, but a clear one.

    Some LCD have an antireflective film layer built-on the polarizer or separate. That would have to be peeled off.

    Unsure if this uses polarizer, believe yes, but a clear non-hazy one, and no diffuser nor backlight.----> http://www.geekalerts.com/u/flagstone-clock.jpg

    And on the market : ----> http://crystal-display.com/components/displays/transparent-displays/
    ----> http://phys.org/news/2012-01-samsung-transparent-inch-lcd-panel.html
    ----> http://lcdtransparent.com/
     
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  5. Externet

    AAC Fanatic!

    Nov 29, 2005
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