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Mr. Game&Watch
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Die kultigen Nintendo Handheld-Spiele der 80er Jahre ...!

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Very faded LCD display 08 Apr 2014 21:00 #6104

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In the past weekend I have tried combining LD50's idea with mine and I have failed.

I was about to post something about it here, saying that my findings were that there is nothing reflective enough that could successfully replace the stained back reflector, when I decided to do some googling and found this very detailed article on Wikipedia about LCD displays.

My attempt consisted in purchasing any ordinary Iphone screen protecting foil (such as any of these ) and glueing it to the backside of the original back reflector.

Two things were learned:
- I discovered that there's nothing on the screen protector foil that really makes it stick to any surface; it was designed to stick only to certain surfaces - It won't "stick" to anything else than the phone screen surface.
- Making a glossy, reflective surface to replace the original back reflector is only half the way.

According to the illustration on the Wikipedia article above (where layers #2/3/4 are "sandwiched" into one single part, which is the "glass" part), I came to the conclusion that there's also the need to put another polarizing filter (layer #5) before the back reflector.

I suppose the part ChrisVos is selling is the polarizer that makes layer #1 (the vertical axis polarizer), so that one doesn't help in this particular situation (where the horizontal axis polarizer is needed).

Very faded LCD display 08 Apr 2014 21:16 #6105

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Hi wmoecke,

You are right, a functional back polarizer for the G&W needs a layer of reflective foil glued to the back of a polarizer, which is placed at an angle (90 degrees if I recall correctly) to the front polarizer. I suspect that this is exactly how the original back polarizers were made. I've been experimenting off and on with this to find suitable materials. I haven't found anything that works 100% yet. The main problem is that using an extra layer of the same polarizing foil as for the front polarizer makes the screen become very dark. I have however found some metallic foil recently that appears to have polarizing properties of its own, so that you can dispense with the sandwich structure for the back foil. I will see if I can make some functional back-polarizers out of this material this week and post some pictures of the result.

Regards,
Chris
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Very faded LCD display 08 Apr 2014 21:20 #6106

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Hi Chris,

Please do! We need a solution (I've got 2 multi-screen and one single screen G&W units with that very same problem :-({|=) and I am nothing but an amateur trying to build an atomic bomb in my kitchen... ](*,)

Very faded LCD display 08 Apr 2014 23:07 #6107

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I think ChrisVos is right, searching online I found that 3m has a reflective film that **could** serve as a replacement, but I can't find anywhere to purchase a sample.

Please take a look:

multimedia.3m.com/mws/mediawebserver?mws...&fn=RDF-TDF%20ss.pdf

Very faded LCD display 28 Apr 2014 08:46 #6164

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Finally got a chance to replace the polarizing film that Chris sent through and very happy with the results.

It's been a little while so I thought I would ask - has anybody found a solution to the lcd reflector problem?? That 3m stuff looked like it had potential.

I was messing around with mine and noticed that the "blotting" effect appears to be under the surface. I started scrapping at the corner and there is a film (I presume polarizing) over the reflector. I wanted to peel it off and try wiping underneath but after pulling back 1mm I realized there would be no way to put it back (and theres no spares!!). Not worth the risk of ruining the unit completely.

So frustrating!! :arge:

Please posting any updates!
Cheers.