Re: TI-H: EL Backlight installed!


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Re: TI-H: EL Backlight installed!




Its not clear like you're looking through a window, its got a slight tint
of blue or black (depends) from the liquid crystals...

>From: Richard Piotter <richfile@prairie.lakes.com>
>>> I use goof off to get the sticky stuff from the mirror off...  Then
>I
>>> reliazed there was some stupid green thing on the screen, so I took
>a razor
>>> to it and peeled it off...  Now my LCD is white clear...  The true
>color
>>> from the el shows through, and isn't difused...
>>
>>Front of back??? If it's the front, then you removed the diffuser.
>There may
>>be a second diffuser on the back of the LCD too! I'm suprised it
>works! Oh
>>well, if it works, it works!
>
>Ok, I looked at these 'diffusers' that you guys keep refering to.
>There are
>two, one of the front, and one on the back.  I'm pretty sure they are
>both
>polarizing filters. This LCD is constructed exactly the same way as
>every
>other calculator LCD I have ever taken apart. Like this:
>
>[--Filter--]
>[--Glass---]
>[----LC----]
>[--Glass---]
>[--Filter--]
>[---Foil---]
>
>The two filters are oriented 90 degrees to each other.  Apparently the
>LC (Liquid Crystal) or glass layers make a third filter or just rotate
>the polarization (unless the pixel is on).
>Anyway, you can see that the 'diffusers' are really polarizers by
>getting
>another polarizing filter and putting it on the LCD.  The edges of the
>LCD, where the green filter is not, is clear, the green filter itself
>will turn black (if you turn your filter the right way).
>
>Here is a thought experiment for you:
>You have three polarizing filters, one at 0 degrees, one at 45, and
>one at 90, relative to each other.  If you stack them 0,90,45, with
>a light source behind the 0, the stack will be black, because the 0
>and 90 will block all the light.
>What happens if you put the 45 between them?? 0,45,90 ?
>
>DK