Results 1 to 10 of 10

Thread: Reverse Polarizer. Black bg & green letters on lcd

  1. #1
    Newbie
    Join Date
    Oct 2000
    Location
    EU, Sweden, Karlstad
    Posts
    23

    Question Reverse Polarizer. Black bg & green letters on lcd

    Does anyone know how i make this effect found here http://www.mp3ondemand.com/mp3_cs.html

    so the background are black and the letters green on the lcd display?
    Pentium II 266 MHz, 32 MB RAM, 2 GB HD, network, IRman, modified
    keyboard, 2*40 LCD, WinMe with Win98lite, Girder.

  2. #2
    Constant Bitrate monger's Avatar
    Join Date
    Nov 1999
    Location
    Good ole Maine. Gotta love trees and deer.
    Posts
    210

    Post

    simple, take the polarizing lense on your LCD and flip it over. Provided you CAN remove it. On some it may be glued to the glass or embedded into it. If all else fails, buy another LCD that is already inverted. Lets face it, the average price paid for a char LCD is about 12 bucks so we can afford to play a little bit.

    just my 2 cents

    ------------------
    Monger
    ICQ-7207702
    Monger
    ICQ-7207702
    UPDATE: I moved farther north. Now its even too cold for the deer; only moose now

  3. #3
    Live and Kickin'
    Arby's Avatar
    Join Date
    Dec 2000
    Location
    Houston
    Posts
    1,377

    Talking

    Wow, thinking about how lcds work, that makes perfect sense. I though I would have to buy a new lcd. However, I might have to after trying to take the layer off

    ------------------
    Visit my page, http://mp3box.2y.net

  4. #4
    Live and Kickin'
    Arby's Avatar
    Join Date
    Dec 2000
    Location
    Houston
    Posts
    1,377

    Post

    Ok, I was messing with this, and got it to work. However, since you're rotating the sheet, it doesn't line up anymore. I'm going to radioshack to buy a bigger sheet. I'll let you know what happens.

    Picture: http://mp3box.2y.net/temp/inverse.jpg

    ------------------
    Visit my page, http://mp3box.2y.net

    [This message has been edited by Arby (edited 12-10-2000).]

    [This message has been edited by Arby (edited 12-10-2000).]

  5. #5
    Constant Bitrate monger's Avatar
    Join Date
    Nov 1999
    Location
    Good ole Maine. Gotta love trees and deer.
    Posts
    210

    Post

    not bad response time. cant wait to see how it turns out

    ------------------
    Monger
    ICQ-7207702
    Monger
    ICQ-7207702
    UPDATE: I moved farther north. Now its even too cold for the deer; only moose now

  6. #6
    FLAC DodgeCummins's Avatar
    Join Date
    Oct 2000
    Location
    DFW area
    Posts
    1,386

    Post

    You know, I was thinking about that also...the green is sooo bright at night.

    I have one of those screens like yours Arby, how easily could you get it apart?

    How well can you see the characters now?

    (looks just like my receiver didn't know you could name the inputs.)
    ------------------

    http://www.geocities.com/mr_bubba_zanetti/

    [This message has been edited by DodgeCummins (edited 12-10-2000).]

  7. #7
    Live and Kickin'
    Arby's Avatar
    Join Date
    Dec 2000
    Location
    Houston
    Posts
    1,377

    Post

    I have the seiko L4034 (4x40), and it was easy. Just bend the tabs on the back to slide off the cover. Then, the polarizing film will just peel off (get it started with a razor) If you rotate the film, you can see it change, up to the point where it is all black(or a dark purple like mine). It makes the characters MUCH easier to read, and it's darker than a big glowing green rectange. However, you have to rotate the film to get this to work (see picture), so you need a whole new sheet of film to do the entire screen.

    Unfortunately, radioshack didn't sell the film, and I haven't got a chance to go anywhere else (it's finals week). I'll let everyone know how it worked out and put up better pics this friday, after finals.

    ------------------
    Visit my page, http://mp3box.2y.net

    [This message has been edited by Arby (edited 12-10-2000).]

  8. #8
    Newbie
    Join Date
    Aug 2000
    Location
    Orleans Ont, CANADA
    Posts
    54

    Post

    <font color="blue">Wow!</font>
    That looks so cool!

    I'm getting a touchscreen for my solution but I still have the 4x20 Char LCD that I had for phase 1. How do you do this again? I have no clue what a 'polarizer' is so I'm a little lost. From what I gathered, I have to seperate the LCD from the controller board (I have an optrex model similar to this one: http://lortymp3car.terrashare.com/20x4_for_sale.jpg) and then strip off the film strip on the back and reverse it?!??

    Anyone?!



    THX,
    Smacker
    z-24 Mp3
    P-200 w/ 64meg RAM, Win 98 lite
    13.6 Gig HD, 4x20 LCD, keypad, IR remote(?), tape adapter
    (...working on touchscreen LCD, FM trans/mod and RF remote)

  9. #9
    Live and Kickin'
    Arby's Avatar
    Join Date
    Dec 2000
    Location
    Houston
    Posts
    1,377

    Post

    Well, they're easy to take apart, just look at the metal tabs on the back. Once apart, you have to rotate the film, not just flip it.

    if you flip something polarized vertically, you get the same thing

    | | | | | | flipped = | | | | | |

    | | | | | | rotated = ------

    Anyway, you'd have to buy a new polarizing film (i'm gonna try a camera store) and put it on polarized the opposite direction the current one is on.

    check out http://www.howstuffworks.com/lcd2.htm to see how lcds work. If you rotate the front film, you basically invert all of the light and dark.

    That's enough from me for now, I'll have pictures and a demo up friday, after my finals. I have a final tomorrow morning as a matter of fact, so I'm off to bed.


    ------------------
    Visit my page, http://mp3box.2y.net

  10. #10
    FLAC DodgeCummins's Avatar
    Join Date
    Oct 2000
    Location
    DFW area
    Posts
    1,386

    Post

    I guess you can't just flip the film over.

    I did that with a pocket calculator once.

    But there I was able to completely flip the glass piece over and got the reverse.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •