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Old 11-23-2008, 04:40 PM   #1
ProDigit
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Posts: 2,157
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Join Date: Oct 2008
Location: Miami FL
Device: PRS-505, Jetbook, Jetbook Mini, Jetbook Color, Astak Ez Reader Pro
E-ink magnetic? Not mine!

E-ink screens are said to be magnetic.
If so, that would mean that any magnet could distort the image on the screen.
We know from a previous post I posted that the e-ink screen seems to be affected by sunlight.

So far I've quickly tested using a magnetic screwdriver,and a magnet from the fridge, but the screen does not seem to be affected by that.
At this moment I have no more powerful magnet than those, but if sunlight affects the e-ink, surely a weak magnet should too.

So far there's no evidence that the e-ink screen is magnetic.
I have more the sensation it is a TFT / LCD screen stripped of the RGB grid, and backlight.
The basic function of using a polarization filter and a Liquid+Crystal when adding a voltage the liquid will be like 2 opposing polarization filters, darkening the screen.

This same principle is used in solar powered calculators, and some PDA's,only now there is a white plastic background.

On the other hand, no matter how I tile the screen, the black ink does not appear to be 'floating' above the white screen, as should be with polarization filters.

Makes me wonder, why, if the e-ink screen truly is magnetic, why it is not affected by standard magnets.
I could start experimenting with more powerful speaker magnets,or Neodymium magnets soon,to see if the same applies here.

Last edited by ProDigit; 11-24-2008 at 10:08 AM.
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