Quote:
Originally Posted by pdurrant
With the glass substrate, the wrong pressure or especially a twisting force will shatter the glass.
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And, as you say, the amount of torque increases proportionally to the linear size of the device. The same twisting force will exert twice the torque on a reader with a 12" linear size than a reader with a 6" size. ie, it only needs half as much force to break the substrate.
I don't understand what's happened to plastic substrates. If memory serves me correctly, in the autumn of 2010 eInk announced that they were commencing commercial production of 6" screens with a plastic substrate, and since then there's been ... nothing. I can only speculate that something went disastrously wrong in the step-up from demonstration models to commercial production, and it just didn't work out.